How to check fuel flow on outboard
Vložit
- čas přidán 20. 01. 2015
- This video will show you how to check the fuel delivery through your outboard motor. Watching this you can check fuel flow all the way from the tank to the carburetor bowl to determine if you have a fuel delivery problem or if the carburetor itself is gummed up.
If you have questions or would like to check out other helpful articles and videos, visit: www.rowintel.com
A common mistake people make when attempting to prime a fuel line from a previously empty fuel tank is forgetting to hold the primer bulb in a fully upright position while squeezing the bulb. This enables the valves in the primer bulb to function properly. Another often missed step in systems with large fuel tank line filter systems is neglecting to fill the canister with fuel after changing the filter. If you leave the canister empty you will be forced to squeeze the primer bulb many times to fill it before fuel will actually be delivered to,the engine.
Thanks for doing this, the store told me I should be able to just squeeze the pump and fuel would come out, didn’t work. Watched your video and it made it easy to see that you need to push that connector in for fuel to come out. Did that and it confirmed it was working. Saved me an unnecessary 75 purchase of a new one
1995 60hp Tracker cranked no start (sat idle for a year) this video showed me how to check for gas to carburetor, opened the bowl drain, pumped the gas ball to flush out old gas, started right up. ( already had put fresh fuel and enzyme additive in tank) .
Thanks for taking the time to show me how to trouble shoot.
Great video, professional and right to the point. Unlike others on CZcams that play music in the back ground and waste time wanting to hear themself talk.
Keep posting! 👍🏻
Great video and narration, very helpful!
GREAT video. Easy to understand and informative.
This video is the most helpful video on CZcams. Thank you so much 🙏
Definitely in my top 5 for sure
I don't do a lot of work on engines, but when I do, I usually get a refresher and I'm always reminded of how intuitive they really are... fuel oxygen spark.
Thanks
Man you are the best. So to the point and clear.
Wow! Great video. Quick and clear instruction. I needed this last spring.
Very well explained. I tend to jump in too fast and miss little essential checks.
Your boat motor videos are the best on the web. I've learned a ton from you. Thank you!
right on....i got about half way through the check...will continue and thank you
Great tips. Having trouble with fuel getting to carb. Very helpful thank you.
Thank you! Very helpful to remove the mystery of an outboard motor!
Good video! Straight the to point and informative. Thanks
Very informative, I will be able to find my problem. Thanks
One of the best explanations of outboard motor fuel flow, excellent job😊
Such an informative and easy to understand video! Thanks a lot!
+EX Smith Thanks for watching. Safe Motoring!
+ROWINTEL.COM thanks! I had a problem with fuel drippig out of the cowling when the engine was trimmed up. When I took the cowling off and primed the bulb, I saw that a tiny amount of fuel was seeping through the engines actual fuel filter. unscrewed the bowl, wrapped some plumbers tape around the threads and screwed the bowl back on and I am happy to say I no longer have the issues anymore!
Wow thank you. You're vidieo was very informative and I could see everything you were describing. Simple clear and concise
Great video. Traced my issue to a dodgy primer bulb on the external tank fuel line.
Nice video! My 8 hp tohatsu wouldn’t idle. Took off the carbs and cleaned out the jets. Put back together and it ran perfect.
Great video. Very clear and helped me out. Thanks
This just completely opened my eyes thanks a lot man!
Awesome video! Thank you for sharing this education
thank you very much for the help turn the fuel mixture down starts up really early now
+Bowes Project Not a problem, glad it worked out for ya!
This is one hell of a video thank you very much. Exactly what I was looking for 👌👍👍👍
Perfect explanation, great video thank you!
Great video, guy's like you make it worth it. Thanks so much.
This is proper troubleshooting. Thank you!
Very helpful. Thanks for the video.
2000 model 40 hp Johnson outboard. New fuel tank ,line and primer bulb. Engine recently gone through (maybe),it runs good,but will Sometimes not run unless you constantly squeeze the primer bulb,other times it'll run fine. Don't want to just start throwing parts at it....found your channel,you seem to be well versed on the operation of outboards. Hoping you or a subscriber can guide me to the proper troubleshooting needed to get the engine running properly. thanks in advance.
I see why you have 1.5 M views, calm commonsense advice. Well done, subscribed.
thanks for the video very helpful
Great. Thx. Watching from Ontario Canada
Great video mate!!
Very thorough info...thank u!
Very good clear advice!
I love you man! Fixed!
Great CZcams instructional video!!
thanks for the tips
Guess what I'm doing tommarow morning! Thank's, for this video, makes sense and cheaper than replacing parts etc.
We rented a small fishing boat on a lake in the Sierra Nevada mountains. It would run for a while then quit. We looked around and saw a lot of other boat renters waving for a tow. I found that priming a few squeezes would get it started but this time when it started to stumble I'd give the bulb a few squeezes kept it going. Annoying but better than rowing! Interesting that every boat they rented had the same problem huh?
Great video, do you have on how to adjust the carburetor for low trolling speed at higher altitudes?
bought a little boat with a 35hp motor, one of the things that i just noticed while unsucesfully trying to start it was the one way pump was installed in reverse and i realized that during this video lol
very helpful video, thank you.
Certainly, glad it helped!
great vid really helps thanks
Very well explained Thanks
Good detailed video
Great advise thank you it answers my low power at full throttle, carb was not getting a good flow due to a crushed hose :)
Was s crushed hose in the outboard or the hose from your tank to the outboard?
Very good video, Thank You.
Very helpfull i just got my boat out of the shop and its still not running right and it runs but starts cutting out when you give it full throttle then it dies after a few mins it will start back up idles great till you give it the juice....thanks
This guy in the video is also a legend in the Avaition community
Very good video
Going thru this right now on. A Honda 20 hp brand new but haven't run it in 1.5 years. The gas in it had stabilizer. I got fresh gas and will purge the old fuel thru the bowl hole you indicated.
Thanks.
Did this end up working for you? I’m going to try this tomorrow
Well explained video. Thank you
This video saved me hours...
Great video
great ideas! gonna try the all
Good Video, I think that is why my problem is.
great video
great vid.
Thanks for making the vid
That was a good way to verify that you had fuel to the carburetor using the pressure created by the fuel priming bulb. You did miss out on mentioning the other main culprit of fuel starvation being a faulty fuel pump. I am having an issue with my kicker and I already eliminated my fuel line as a culprit by removing my connection to my main tank and connecting to a known working portable tank. Today I am going to connect a “T” fitting into my fuel line after my pump and check the amount of fuel pressure as well as the consistency of that pressure.
what causes a brand new Y 50 to starve? its 3 weeks old this os ridiculous. it runs when it wants to
Good morning great video, I have a Mercury Black Max 150find the started this last weekend would not start I pulled the screws out of the bottom of the carburetor bowl and oil ran out. Upon further investigation I discovered that the oil reservoir cap at the top of the motor was cracked and allowing air to come in I am assuming did this allowed the oil to gravity drain into the carburetor bowls, is this a reasonable assumption?
great video!
+Zach Hoyt Thanks for watching!
Do you recommend an inline filter?
I have this exact motor. I've removed and cleaned the carb. I have not fully disassembled the float mount or the spring pin; simply because the inside base of the carb bowl was almost immaculate. Do you have a jet cleaning tut as well as a carb float set tut? Because I think that may be my issue. Im not a mechanic at all so I dont take something apart unless ive seen it a number of times.
Good video thanks
Beautiful. Thanks. 👍👍
Did u do a carburetor cleaning video
Should the float needle when the bowl is full prevent you from continueing to pump bulb?
I have a 1997 Mercury XR6 150hp 2-stroke EFI (recently purchased). can you show fuel system from tank fuel flow? ie, is there a backflow valve inside tank. Does the fuel pickup nozzle in tank have a filter?
Very helpful indeed!
I just need to change my fuel line from the center console gas tank to the water separator
No clue how to get it from the console tank
The flow is restricted
Presumably trash on pick up
Awesome, Thanks a bunch.
Thank you so much!
Do you close the fuel cell vent after you get engine started or do you run the engine with vent open on fuel cell?
I have a 1998 evinrude 50 hp 2 stroke. I acquired it after the prev owners let it sit for 3-5 years. I am able to get it to run half-a!@'d, but when it is in the water and in gear, it barely goes 5 mph at full throttle. It will rev all the way up when not in gear. Any suggestions? Also.. do you have a video that shows the removal of the two carbs on a 98 evinrude 50 hp 2 stroke? Thanks alot.
Also check the condition of those o-rings at each end of fuel hose
Great info, im getting plenty of fuel to the carb so next ima check the jets,i have a tahatsu 4 stroke 8hp looks just like that, any other suggestions if it's not the jets?
Check the float needle is functioning correctly.
Thanks my brother
I have a mercury motor on my boat 115 Hp it sometime has a good speed and sometime to slow what could be problem?
Hello, nice video... I have the identical outboard, but I have the opposite problem. I disconnect the fuel line when I transport my boat and reconnect when I get on the lake. The last few times, when I reconnect the fuel line, prime and try to start the engine cold, the motor floods. I remove the spark plugs to dry them off, and leave them out a while to dry out the cylinders, then it starts. Any suggestions for how to prevent this flooding?
Very nice thanks can u plz help for 40hp outboard 2000 how much oil I need to mix with petrol thanks
I have a mariner 6 hp outboard and just got an external fuel tank for it. Should the fuel line be on or off while running it because when it's on it fills up the internal tank and when it's off it doesn't start.
So I have a 25 efi merc and my motor after running rough totally died. I can prime with the primer bulb and get fuel to the engine fuel filter but there's an inline clear glass filter before the vapor seprator the is clearly not filled with fuel. I tried priming with the hand bulb filling it up and hitting the electric start but either way its still empty.
Could my fuel pump have went out? I had drained all fuel from the whole fuel system including fuel rail cause i thougt i had water in my fuel.
1980 mercury 50 hp runs fine in neutral and low rpms but when I open the throttle up it won't go into that higher gear...runs like a 10 horse! I changed plugs, Sea Foamed the carbs, but no real results. Saw your video and remembered the bulb doesn't really get "hard"...🤔...sound like fuel filter? If filter in tank is clogged then it wouldn't pull enough fuel to let the bulb get hard would it? But if the engine filter was plugged, it would get hard! What do you think? Thx
What about overfueling? I have a 98 Johnson 115 that does not idle well then does better at 1/4 to 1/2 throttle but bogs down again at full throttle for several seconds before finally smoothing out and getting up on plane. The engine runs fantastic on plane at WOT as well as lesser throttle but once you slow back to no wake speeds it begins to choke out and eventually dies out. Once this occurs it will not start unless you disconnect the fuel and turn the motor over several times. I can make it work but it is a bit of a pain. Any suggestions?
Thank you
I have a 2016 Evinrude Etec 50 HP. My question is should the fuel filter be full of gas when running at all times. Visually after priming the bulb it is visually full and after 10 minutes of running it is empty. The motor continues to run.
In fact the dealer tested the motor and stated he ran it for 1.5 hours and all full pump pressures where per specification. The filter was empty when I picked the boat up after service.
Thoughts?
Thanks for the video. I have a 25 Mercury 2 stroke. Cranks every time. Idles great. Runs full throttle great. Problem is often it bogs down when throttled. I have to nurse it from idle and finally it will run after letting the throttle off several times, then it will go to full throttle.
David Youmans so this video helped you? It was fuel related?
It's always every outboard on CZcams but the one I have. Which is a 200 efi..I'm gonna try and trace this. I know my fuel water separator is bad. It actually had marble sized gummy deposits sitting on top of the filter. So I know some of that buildup has to be in the lines somewhere as well. Maybe even in Carb..
So i pumped into a glass until I just got fuel minus water from bulb to where filter attaches..So I'm good at that point.
Now I need to check lines. It doesn't seem mine are easy like in this vid.
I'll take a closer look.
Any further suggestions that may help ?
2003 Mercury 200 EFI
I have a small white strainer too, but it comes from the oil reserve reservoir.
Is that a fuel line strainer ?
I have a 95 Evinrude 25 with a carb. just had it rebuilt when it wouldn't idle. Couldn't locate a inline fuel filter. Can I add a clear plastic one to the gas line ( before the pump bulb) coming out of the gas tank. 2nd yr for a rebuilt carb. ugh
I have a mercury 15 2012 model runs excellent cold or warm when you have stopped it and left it for about 10 to 20 minutes it Cranks for a while before starting again but then runs well would really appreciate your help wondering if it might be an air leak
+Bowes Project If it starts fine when cold, but has trouble starting after being run for awhile, then restarted 10-20mins later it is just getting a bit much fuel at start up due to the fuel in the bowl evaporating and in essence "flooding" the engine with too much fuel at first. If it has the problem on all start ups, then you have a small air leak in the fuel line allowing the fuel to flow back to the tank.
I have a question. My motor (mercury 9,9 4 strokes just like this one) Sometimes it starts and i accelerate it with no gear , and after a moment it chokes , and then i just cant start it any more .... The strange thing is that not always happens... what could it be? ( I just send it to do maintenance but it did that before , it is just a random thing) Thanks!
Very helpful post!(7👋🇨🇦👍👍👍
Enjoying watching your videos, very informative! What would be your opinion on an Evinrude 140cc outboard 2-cycle pre-mix oil(ounces) per gallon of gas. Can't seem to find an info on this. Thanks for all your help!
You should at least be doing a 50:1 ratio. 2.6 ounces of oil for every gallon of fuel. Hope this helped you out.
Thanks so much for your time bud! Bless you and yours sir!!
I have a 1994 yamaha 40 hours. Starts great and runs at times. However, some of the time I'll go to start boat and warning sound goes off and stays on. When this happens boat runs good at low speed/rpm, but seems to bog down or misfire at higher speed/rpm. Is this the fuel pump or fuel lines needing cleaning?
Got 85hp evinrude, put carb kits in, now my primer ball doesn't get hard like before, about 3/4 tightness. what should i look at next, thanks
I got a 2014 Yamaha 50hp four stroke, and it works normally fine until i pull the box so i can get more speed. When i pull it, it wont accelerate as good, and it wont raise in speed. Any tips?