Hydrostatic Lock the Silent Killer
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- čas přidán 17. 06. 2018
- I've seen this a lot in my career. An engine experiences hydrostatic lock. The fluid is removed from the cylinder and everything seems fine. Some time later, the engine fails. That's exactly what I believe happened to my Fairmont engine as I discuss in this video.
I hope you never suffer the same fate.
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ETCG1 - Auta a dopravní prostředky
One of the best and worst things about having a little automotive knowledge is the dread when you notice something isn't "right". Most people see a little smoke or feel a little fishbite or notice a loss on power and blow it off or don't worry about it. Unfortunately I know those little things probably keep you up at night, especially with a car like the Fairmont that you've put so much of your time, money, and love into. Glad you got it figured out and can move forward.
SPLEclipse Reminds me of the time I went to do an oil change on my mom’s car, reversing it into the shop the trans just didn’t feel right, drop the pan & it’s full of metal, my mom had no clue!
Oh gosh yes those things keep me up at night. And even more so when I can't do anything with the car for a few days! Something feels off, catch a bit of an odd smell, lost a bit of coolant or what ever. Yeah it freaks me out a bit.
Etcg1 people that go out of there way to explain things in detail like you with your busy career and family life are hard to find you're a blessing Eric I appreciate your work hard work that is.
I am sorry to hear that this happened to you. I'm sure it really feels like a kick in the rear. Glad you seem to be looking at it from a good prospective and using it as a way to continue to teach people.
Crazy, I had water get into my "cold air intake" on my MK3 VW Golf ABA engine to the point that it shut down. 50,000 miles later still running like a champ!!
Eric I have been subscribed for a long time and every Video I watch brings back memories of earlier days. Thank you for all of your valiant efforts.
Excellent information Eric. I've had the same issues with a 4.6L Ford. Just went ahead and replaced the motor.
Bad news for the Fairmont, but... that means more videos for us! Thank you for all the info you share, I learn so much.
A project is never finnished... Stuff like this happens. It sucks.
Just choose to watch your video on my birthday forgetting that you wish a happy birthday, best thing ever
Very interesting Eric, thanks for posting such valueble information. The apreciation is on this site. Stay greasy! Keep posting!
you learn something new everyday. thanks eric
Awesome video Eric this was extremely informative. I hydrolocked my girlfriends 07' caravan when a river overflowed onto the road and almost took the whole van with it. Got out and waited for the water to come down then i pulled the plugs, cranked it and shot all the water up then it drove fine for 3 months until just like you said complete failure of a connecting rod that was bent during the hydrolock situation! We look back on it as a blessing because we got her a 02' civic lx 5spd that is her baby!
Thank you very much for this valuable information. I never knew about this.
This is why I've been subscribed to your channel for a few years.
The hydrostatic lock phenomenon is an important one and I'm happy that you vlogged about it. You did a great job of describing the phenomenon and showing the damage. I'm sorry to read that this caused your engine trouble, but now you have an excuse to put more speed parts on it! Yeay!
That all said, "driving through a puddle" is almost certainly not going to get enough fluid into an engine to lock it up. Excluding the engine fluids, getting another fluid into an engine to cause this sort of thing usually requires a stock vehicle engine either being pretty close to completely underwater to get it past the air filter (manufacturers and engineers design to make sure this sort of thing doesn't happen in 'normal' driving).
I've personally driven stock vehicles with water above the axles (both on and off road) with & without inner fender flaps, as well as through completely torrential rains and still not had water get into the engine. Yes, I wasn't trying to go fast, but my point is that a "puddle" isn't going to have enough water to create an issue when even vehicle use through dramatically flooded areas don't usually cause problems with hydrostatic lock.
Yup, cold air intake years ago on a single cam VTEC del sol. wasnt mine but they make parts to put on the cai to prevent hydro lock nowadays... love the channel!
Dude, that totally sucked! -Thank you for sharing your experiences!
Excellent job explaining things as always.
Best show and tell on hydrostatic lock I have seen on Ytube
Eric I'm so sorry, what a frustrating experience. As you say, hydrolock could precipitate a late failure, weeks later.
So glad I've never experienced this issue. Would so suck to have an engine self-destruct! All that time, effort and money . . . gone. You truly got lucky. My sister and I ran through a creek and didn't even make it across when we heard a sharp SNAP! Cracked block. It was a really bad night, because it was storming (gale force winds and rain) and we ended up walking for miles before finding a phone and calling our folks.
Bummer. I'm glad you found it early though, without a bigger bang helping you find it.
i have not heard of or experienced this. but it's good to know now. thanks eric.
Eric, very close to the same thing happened to a friend of mine back in 1999 on his Integra GSR. Water got into one cylinder and fractured one of the connecting rods but kept running with a little misfire here or there. About 9 -12 days later, rod goes right through the piston. GSR block was beyond repair, replaced it with an LS block and put the GSR head on it, even had the VTEC working proper. turned out to be a faster car that wa. But I'm very glad everything worked out for you. its a beautiful car and motor.
Good god. I loved rain puddles. you know those 6-8 inch deep puddles you get when the rain channels overflow on heavy rains. Guess I'll be avoiding them now. Thanks for sharing. problems like this occasionally coined as failures are hardly ever shared. Thank you so much. Never had a car engine shut off from the puddles though.
Eric, you should talk to the Top Fuel crews, The masters of hydraulic lock! Once the spark goes out and the nitro keeps filling the cylinder,the rest is history. Its a good day if only one cyl breaks a ring land normally it leads to those spectacular "And They Walked Away!" videos where the block splits in half with the blower in the drivers lap! Welcome to the world of forced induction
Damn man, sorry to hear about the bad luck, I hope it is a quick, easy fix. I really hope to see this car in action sometime.
Sorry to hear about this. Damn. GL with getting her back up and running...
THX Eric for the wishes for my birthday :-)
This is a very smart video. I repaired a Evo X engine that had a piston that cracked just like that a few years back, but never knew what really happened to it (you know how customers omit the truth/lie). This video gives me some new perspective on what might have cracked that piston. I replaced that piston, put new rings on the rest, flex-honed all cylinders, replaced all rod bearings, and it's been social media verified to have been out there getting beat on on and street racing with modifications for 3 years now. I wanted to make a video of that job, but the footage turned out pretty bad. I only ended up posting a video of flex-honing it.
Great video though, it really made me glad I'm still making sure to watch ETCG1 videos.
Another great video with good information. Lots of good info for us in this video. Thank for sharing it with us......
Just had one occur with a 1998 Tacoma 2.7 today. Engine ran rough briefly upon start up occasionally over the course of 1 or 2 weeks with minimal driving. Drove one day fine on a 15 min trip, idled for about an hour with AC on, filled with gas. Re-Started and sounded rough like all the cylinders weren't firing, it smoothed out as it normally did. Stopped at gym turned it off; worked out a couple hours, but it wouldn't start after that. Fun times; possibly getting a new engine. Mechanic said it was a small coolant leak into one of the cylinders that's causing the hydrolock issue. They managed to get it started but couldn't guarantee continued operation. Recommended a new engine from a junkyard or repossessed vehicle.
Good video. Just trying to learn more about type of engine failure and possible solutions.
When I was a kid, a mate of mine had a Toyota 4-Runner diesel. We went off-roading and he dipped the front into a water hole and the engine locked. Thankfully, the engine was idling at the time. So we sat on the fenders and took out the glow plugs, squirted the water out with the starter motor, then reinstalled them and the damn thing fired right up. After another 4 years as a daily driver, it was still running well - I would guess we dodged the bullet that time.
On the other hand, I've seen a few cars over the years that tried to power through a deeper-than-expected puddle and the engine kicked a leg out of bed (read: perforated the block with a con rod.) That was quite a mess.
U just presented another reason to avoid flood cars... OR anything used for THAT fact... Thankyou for sharing ETCG#1👍👍YOU ARE ABSOLUTELY AMAZING !!!!
It is my birthday!! Thanks etcg you're the first person to wish me happy birthday on this day!
Happy Birthday!
Faulty fuel pressure regulator is the gift that keeps on giving the whole year, Clark.
While this vlog gives me a stomach ache from the damage, it does serve as a very strong reminder that hydrostatic lock can kill even the nicest of engines. Very sorry that Dark Matter Pikachu came to an untimely end, but glad that the lessons will continue, and that we'll see new and even more exciting things in future.
Another AWESOME video.
Sorry to hear this . Truly never done !!!
I am so glad my truck does not have a cold air intake, I drove through a puddle over a year ago which triggered a shut down (my alternator at the time had a few electrical issues), checked the air intake and was glad the box was bone dry.
Oh nooooooo !!! #DarkMatterPikkachu !!
So sad but I know you'll get it back in an even better shape Eric !
Keep on, Keepin on eric!
I was hoping you were talking about the mini, then I seen over your shoulder, the fairmont up on the lift, with dark matter Pikachu disassembled, Noooo, Last week my wife’s car broke down, on the exact same day that mine started running like a pig, “that’s a car guys life”, at least I had fun getting dirty fixing them both
Eric, you are a very smart and articulate guy, so I was not expecting "it could have went..." from you.:)
Another great video
Might interest you that aircraft radial engines are turned over by hand to guard against hydraulic lock by oil ingress while stationary. Love your content ETCG and your easy going manner!
I live about 45min away from the Dayton Aircraft Museum. 😉 Also, I seriously considered getting into aviation mechanics before I went into automotive. I've loved planes since I was a kid. Thanks for the comment.
Thanks for the explanation. Very clear.
Driving through an unfamiliar place during a Florida rain storm, and I coast through what LOOKED like just a bit of water on the road. It turned out to be a huge pool of water. I was going ~10 mph and suddenly my car says, "I don't feel so good" and sputters a bit before I turn the engine off.
Cried in the rain, pushed my car into a parking spot, got it towed, got the water out, new plugs, new MAF. Started right up.
It's been 1.5 years and 15K+ miles, motor is still going strong (still burns oil but that's a Honda problem hehe).
But I guess I'll just have to wait around for my conrod to snap lol, thanks, Eric.
Sucks that it happened Eric, but incredible video with real footage and not theory!
Super bummer Eric. I've been here and feel for you. Could have been much worse!
Waaaw it seems like everything is going wrong with bu t hope that u still find a way to make it run ty 4 everything youve done 4 us
Never seen long term damage like this from hydro locking. Extremely interesting and good to know!
You've never been out with the offroading crowd then. We shatter con rods & drop valves for fun.
That's because this damage isn't from hydrolocking. It's from fucking up a build.
@@rangerdoc1029hydrolock with a running engine at speed is WAY different than a little starter hydrolocking during a crank cycle.
On the upside - more Fairmont videos!
Agreed! I really like the fairmont videos, they remind me of the cars I started out with, (and some I REALLY wish I'd kept!) Also, the modifications Eric is doing are some I wish I could've done, or could do. These videos let me wrench vicariously with Eric. ☺
Adrian Kingsley-Hughes are you guys keen on calling it DMPC1 for short ?
There's a special place in my heart for people who take really terrible or fugly cars and make them kinda cool. This Fairmont (and the Futura) is one of those cars! Ah .. the 80's.
That sucks, man. That engine's been through so much in such a short time span.
Hopefully all the kinks are out now.
Probably a very rare and fortunate occurence, buick Park Avenue ultra 3.8L supercharged engine with the poorly designed plastic gasket, slow leaked coolant into the cylinder. Right at startup, engine locked, and fried the starter. Removed the plug on the offending cylinder, turned the engine, and out spouted the coolant like a whale. Replaced intake gasket, reassembled. Been running smooth and great now going on 8 years. Really blessed...guessing the cylinder filled up in a position that didnt bend the rod. Apparently the buick 3.8L of that generation used these plastic intake gaskets that cracked around 30-40k miles. Car now has 210k on it, and still pulls hard. Really blessed...
A number of years ago Mom's cutlass lost an engine to this. I was home on leave after my Step-Dad had replaced the engine asking questions about why her old engine failed and nobody knew. I finally found that the windshield wiper linkages had 'sawed' through some vacuum-line in the cowl area. That allowed a ton of rainwater (Alaska) to fill up the intake and one apparently one cylinder. Then the motor was started and promptly stopped (KIA). Glad I found it or it could have cost her a 2nd engine as well.
Had a 283 ci rebuilt a few years back that let loose. The ring land between the 1st and 2nd rings broke all the way around and separated the piston top from the rest of the piston. When I pulled the engine to see what had happened, I found the piston top just low enough where the valves didn't hit it AND a piston skirt that that ran the length of the bore without damaging anything WITH a 1/4-inch of piston missing. I had to rebuild with all new bearings, new cam, and new oil pump. Those little fragments broke teeth inside the oil pump. All the bores were okay and just needed a honing. But doing 2 rebuilds inside of a 4 month period when you aren't racing costs TIME and MONEY. Made a NOTE TO SELF: Do not drive into waters. This was on a Vega station wagon with a hood scoop. The water had climbed over the hood suddenly (I admit I was gong too fast to drive through standing water) and got sucked into the carb. And luckily it only killed one piston, and my refund check.
I got REALLY lucky. Hit a deep pothole one rainy day and fend the entire front end of my Focus down into the flooded area, instantly killed the engine. I threw it in neutral and pushed it up a commercial driveway and walked three blocks home in the rain. Next day I went back and pushed it home, crossed my fingers, took the spark plugs out and cranked the engine over periodically until water stopped shooting out. That was two years ago and still running on the same piston assemblies. Did initially think that I killed it when I hit that pothole though.
Haha and it is my birthday. Thanks for all the vids and hard work Eric
If Ash taught us anything. It’s Pikachu will always get back up. Can’t wait for the upgrade video.
May also attack if it doesn't like what you're doing. But hey any pet will bite once in a while right?
OOCH, things happen and at least it's just a piston. Great video Eric and keep them coming.
There are still 7 left that run fine though ;)
When you hear that hollow thud, don't try to hit the starter a second time.
Man, wish I'd have known you were in Carlisle. Would've been cool to meet you and Oliver. I live right on the edge of the fairgrounds, so maybe I'll catch you next time!
Great video.
That was a tough break, man.
It is one of those things I have been a bit paranoid about and while I have used cold air induction, it was to the OEM filter housing and I had drilled some smallish drain holes for any water that got in - with heavy rain in mind, and as I was just looking for cooler air and not concerned about any ram effect - but don't know what would have saved the engine from a real dunking.
On that, many modern-ish vehicles have some sort of cold air feed from the front of the vehicle, often quite low and behind the bumper area, so I am frequently bemused when I see drivers attempting quite deep water in their cars... and then stalling and climbing out of them. I don't know what their insurance companies have to say about it, but either in direct costs if cover refused, or in excess and higher premiums, it must add up.
Whilst your problem 'could' have been down to hydraulicing, it could also have been some other issue or a mixture of both. Rings do rotate as the piston moves, but much faster than you may have been thinking - some studies have suggested as fast as 1:1000, ring to engine rpm - so they may have been past that point thousands of times. Most of the pistons appear to have a good deposit, but a couple of the spark plugs looked a little 'off' - could just be down to the camera, monitor, my old eyes, or whatever - but something to carefully review, especially as chipped ring coatings can also indicate combustion related ring problems or butting ring ends - as you suggest, usually that would be seen as a shiny spot at the ends, but that is usually when the engine immediately fails, not when it is continuing to run and has a chance to build deposits up again. Is there any indication of big end bearing contact - a shinier area?
My point, when it comes down to it, is there may still be an issue with the other pistons, the connecting rod (I'd consider that one WIA and replace it), and I'd carefully inspect the head and bore for cracks.
You really were lucky, if it was a hydraulic issue - not seen many, but those pretty much destroyed the whole engine as the rpm was much higher and had the weight of the vehicle forcing the engine to rotate. I have even heard of, but not witnessed, diesel engines with leaking injectors building up enough unburned fuel to cause 'lock damage on a running engine - might be an urban legend - though it does happen with top fuel engines if there is a misfire.
Oh, FYI, fluids are liquids AND gases ;-)
Very informative!
Very good video
I live in Houston, TX i saw alot of crazy water damage to cars after hurricane Harvey. One truck that came in drove thru water then a month later wouldn't start. When it came to my shop the first thing i noticed was the fan had fallen out with the drive belt. Fixed it and it still wouldn't start. After doing some more digging I found it had also jumped a few teeth on the timing belt. I replaced the timing belt and retimed it, it ran after that. The guy was lucky don't ask me if its still running, never saw it again after that.
I just watched the 2008 Tahoe engine removal on EricTheCarGuy. The piston rings spinning sounds like what happened to that engine too!
I used my EV as a boat when we had flooding a few years back, guy behind me in his camry was not so lucky :P
Good on you for finding the issue, and fixing it, shit happens, even if you blame yourself.
Everybody thinks they are an expert and knows everything lmao, love the videos Eric.
My cousin was flying a small private plane when a connecting rod broke -- went right through the block. He landed safely, but the experience was ... "exciting". (It does get you attention.)
This is part of the reason I got custom rings made, avoids the moly plating failures with forced induction use.
“Let’s spend it all right!” 😂😂😂 that’s the best way to look at it!
Bad luck here. I must say at first I was one of your dreaded sceptics however on a second watching of the video I totally agree with your description of what happened. I would replace or have the rod tested as well as the piston.
I have to admit this whole Fairmont project has been fantastic. However it has put me off the idea of doing anything like that.. sorry.
Glad to see the pictures and video a little better than on twitter. Silly phone is too small to see the details. I think the pitting on the ring is interesting and a good catch. Those pesky details.
My machinist caught that. He's awesome.
I had hydro lock in 09.2017 It was fixed by removing oil with water and changed oil filter and air filter and new engine oil. This car works fine. It does not burn oil at all from oli change to next oil change. It is Peugeot V6 3.0 year 1999. Awesome engine :)
All right, been running well for the last month or so. Quickest solution in this case would have been to visually check that the key on prime shot was turning off. Then pull the plugs, blow out the combustion chambers with the starter, change the oil and filter. Repair the throttle body before blowing out the combustion chambers. Live and learn!
So I replaced the seals and mounts on a 3 cylinder diesel yanmar inboard a few weeks ago...the saltwater cooling intake pump overflooded he exhaust and forced water into cylinder 1. I also may have had a backflow issue from the return line. Pretty sure it hydrolocked and now I am pretty nervous that I damaged it trying to start it up. Lesson: if you think its flooded, stop cranking immediately. I may need to remove and inspect the cylinders now...huge job, especially on a boat.
You should have sprayed some brake clean in the cylinder in the beginning to verify the integrity of the rings, etc. Haha! Sorry to hear about the problems with the Fairmont. At least you got 4,000 miles out of it before major rebuild.
My old timer mechanics favorite saying was "We'll fix it even if takes all the money you got" and "I'd rather you just owe me the money than have ya cheat me out of it"
had my da integra shut off in the rain once, due to water getting in the intake manifold. Not thinking anything about it, cranked it, started right up without issue. Engine did miss a few times I suspect from sucking through the remaining water. But ive put 10k miles on it since then, and no issues whatsoever. No smoke no blow by, still gets amazing compression. Engine is a honda b18a1 all stock except acl race bearings.
I really gotta watch a Eric vid on one of my birthdays
I almost hydro locked an engine on an 04 Altima 2.5 trying to get it running. The owner needed the water pump and thermostats changed I fired it up oil was water free before hand. Tried bleeding the system and realized it had a serious air issue in the cooling system. Pulled the dipstick and sure enough had water mixing. Pulled plugs, soaked in coolant and cylinder 4 was the worst. Owner admitted after a serious venting that it over heated once and that was enough to warp the head. Luckily I caught it before serious damage had occurred. Just got the head back today. Only 85 to surface and pressure test. If you are ever in Central Florida take a trip to Central Florida Machine and Speed. They are fair, honest and reliable. They also build high performance engines and keep AFR heads in stock and other brands of parts for all your domestic engine needs. They also don't charge much but will be raising prices soon, but not by much.
I'm not entirely convinced that the hydrostatic lock was the root cause of all of this. My money is on the guy dynoing the engine, pushing it at full throttle with boost even though he was well aware it was super lean. The severe detonation that occurred during that time probably weakened the piston enough to cause it to break during the hydro lock situation. I can't imagine a forged piston breaking that easily with the starter motor pushing against it. Not hating, trolling or anything like that, just my 2 cents.
there's no way to tell if the engine fired a cylinder and hammered it self hard. even with the video he has/showed of it locking on crank over.
6speeddakota totally with you, but he run the engine in the car too lean for too long.
Yup I agree, generally piston failed for hydrolock would crack the piston across the combustion surface. This was 90% more than likely from detonation or having to tight of a ring gap althou since the bores are still fine it was probably fine on the ring gap.
Do you not know what detonation look likes when you read a plug?
I do know what detonation looks like on a plug but whose to say the plugs haven't been changed since it was on the dyno ic you seen that video of it going super lean on the dyno when it was in boost I can guarantee you that thing was detonating.
My co worker loved driving through puddles with his 4.7 Dodge Ram, until he hydrolocked it. He took it to Mexico to get it fixed for dirt cheap compared to US prices. He even paid the mechanics extra so that his truck was top priority (money talks there). He drove it back, and it was running fine until it started running rich, black smoke rich. It was a bad O2 sensor. He replaced that, and removed the air box that sucked water from the fender. He installed a dual head "cold" air intake that sits on top the engine.
Had a cold air intake installed on my 2003 Honda Accord. I was a young and naive driver at the time. Rushing to get to work one day there was flash flooding in my neighborhood. I drove right into a huge pool of water and the engine shut off. I stupidly attempted to start it again and you can guess what happened next. I pulled the plugs out to try to get the water out but the damage was already done. New motor went in about a week late. Learned my lesson.
Thanks for the birthday wish Eric.
Happy Birthday!
Thank you thank You thank you. I thought I screwed up my 351m/400m when I was working on carb before a mud tug but now I know it was my flooded 4ft deep driveway that is a half mile long in the rain season put the snorkeling pack on carb forgot exhaust pipes I put #2 piston through the inner wall snapped cam shaft and all that other good stuff but will parts from 351m /400 fit on 351 Windsor
Hydrostatic lock can also come from too much oil in the cylinder. My Porsche 996 Air Oil Separator went out, so it was letting a LOT of oil into the cylinders. I was scared shitless that it would hydrolock before I was able to drive it to the shop for replacement of the AOS.
It breaks my heart to hear that this happened. All of the time and money invested into the fairmont and one piston broke causing you to tear the engine apart. Like you said, it could’ve been worse.
Fix it, race it, and break it. Then rinse and repeat. The Fairmont will live on.
That's how it goes....
I haven't got time for another one of your harebraded schemes Eric!
Well here is a hydrolock problem in progress. I installed a new FiTech throttle body roughly six months ago. Fired it up and let it idle for 15 minutes or so. No problems so far. Tried to go for a drive around the block, and it stalled out at the first stop. Got it home by keeping some throttle, but it was running horribly. Got it back home into the driveway though.
Next day I tried to start it, but just wouldn't fire off. Struggled with that problem for a couple of weeks. At some point the starter stopped being able to turn it over properly. Put a wrench on the crank and all I could get was a partial revolution. Maybe 270 degrees or so. I checked everything that I could think of that would stop the engine from turning - a couple of times the starter turned it over enough to build a little oil pressure. When I was checking the starter and flexplate there was gas dripping from a joint in the exhaust system.
Finally I took out all the plugs to make it easier to rotate by hand. All of a sudden there was a shower of gas from above. It missed me, but I have never heard of such a thing. For some reason gas seems to accumulate in cylinder 8. Got everything dried out the best I could, but still not starting. I'm off to get some penetrating oil this morning and a new starter. Maybe I can get it rotating fast enough to blow out the combustion chambers and try again.
The FiTech has a key on prime shot feature that doesn't help the hydrolock problem. It also gives another prime shot when the engine turns over twice. It seems that when the engine doesn't fire up that all this gas is flooding to the extreme. I have also been thinking about the effect on the oxygen sensor. Everything about the FiTech runs off the oxygen sensor signal. I think that it is possible that there is so much fuel in the exhaust lines that when starting the FiTech sees no need to inject. Going to try hanging the oxygen sensor loose in the air to try that theory out if necessary..
Wish me luck!
Broken ring lands... Your car just had a Subaru moment
+
Subaruian way of life
Channeling its inner EJ.
Chevy cruze 1.4 bad MAF style!
Hey at least the head gaskets were ok
Wow, that really blows! (pun intended) Hopefully you're getting rid of that pressure regulator "that keeps on giving" while you're at it too! Best of luck!
It's already gone. Changed it out before I left for the Power Tour.
Eric my love , you are awesome .
Waiting for more.
Noooooooooooooo...... not the Fairmont... aw that blows. I am sorry, I know how hard you worked on her. Hopefully you can get her back running in no time.
I never experienced it myself in 30 years of driving. I saw one engine that was underwater for a few hours (it had not been running when flooded). My father was a car mechanic en he took the engine out, removed the head and the plugs and let it sit for a few weeks. After inspection all seemed dry and as far as I know, the engine was good again.
ETCG1: Hi Pro-Logic I very much liked how you explained hydrostatic lock and it's dangers also at time mark 4:52/8:45 - :52/8:45 The connecting rod when straight (not bent) will get the job done nicely how ever
*(see note at end of comment) [when the connecting rod is bent and how much it is bent] will continue to bend more and more until failure. so. : *Note , if the connecting rod is slightly bent it will last a little longer than a connecting rod the is severely bent plus when the metal is bent it tends to lose some of it's structural integrity else when the connecting rod is straight it will only experience compression forces only in a straight line (connecting rod not bent) .
I have seen holes punched in pistons when coolant is sucked into the intake manifold on a 72 Ford Pinto 2.0 Liter engine. There is a water line that goes between the number 2 and 3 ports with about a 1- 2 mm gasket between the water line and intake ports. The Gasket failed while the engine was running and coolant was sucked into the intake and on the compression stroke, bam a nice hole roughly the size of the 50 cent piece in the top of the piston, plus a bent connecting rod. The owner decided to scrape rather than repair. (It had other issues, worn suspension, slipping transmission and bad bearing in the differential. Only 68,000 miles and the car was totally shot.
I worked at Mazda near a known flooding area and RX8 owners always felt the need to drive in flood water. Hydrostatic lock does terrible things to a rotary engine. The block plates usually split apart.