VW 1J 9M: 1.9L ALH TDI Common reason for no-start (cranks ok)
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- čas přidán 6. 09. 2024
- ALH decarb video:
• VW A4: 1.9L ALH TDI In...
Thomas
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1.9L ALH TDI EGR & intake removal for decarb: czcams.com/video/4n3Ui81kXI0/video.html
Sorry about the "noisy" video. I need to re-record a new version!!!
One minute into your video and my issue was solved. Really appreciate you taking the time to help others!
Thank you for watching!
I removed my EGR (exhaust gas recirculation) valve and throttle body on my 2.0 TDI VW MK5 Golf. As my engine management light was showing, diagnostics gave me throttle body not closing properly and high emissions. Cleaned both parts with white spirit and wire wool to get rid of all the carbon. Car runs smooth and no engine light 💡 Yaay! Common issue with new Diesel engines all because of the EGR valve!
Thank you for sharing your DIY experience... I'm sure it will be helpful to someone in the future! Thank you for watching!
Nice to know this problem with the vacuum control throttle plate, most of the ones that I see is electronic but suffers from sticking because all the carbon build up 👍👍👍
Yeah... same issue with the electric motor driven ones. =(
Top info very well presented as ever. Thanks for sharing. All the best Pete
Thanks for watching!
Very helpful vid Thomas!
This was the issue with my Golf 4 ASZ Tdi. A mechanic checked it over & diagnosed a broken fuel pump, saying that it wasn't making any sound when turning the ignition over. I got towed home, googled the problem, found & watched your vid, lifted the bonnet, checked EGR unit - voila, exactamundo!
I found that you can stop it sticking as an interim fix by manually moving the mechanism back & forth, you can feel the flap inside sticking & by gently pulling towards the sticking point you can push the carbon back a little.
Many thanks for posting!!
All the best! : ]
ASZ is a PD TDI engine. Not all PD engines will have a shut off valve like in my video (the engine in my video is not a PD engine (hence the injection pump in the engine bay).
Since your ASZ is a PD engine (no injection pump in the engine bay)... it should have an electric fuel pump (transfer pump) in the fuel tank. It is possible for the pump to be dead & the engine to still start & run (the high pressure pump mounted to the side of the cylinder head can retain fuel prime as long as the fuel system is not opened). I would still check the pump in the fuel tank to make sure that it is or is not working. Thank you for watching!
Thomas! The reverse problem of a choke on a carburator! Just seems like it's blocking slot of airflow. I might be tempted to Delete entire deal. Great job!
It reduces engine shutter / vibration on shut down. I would not remove it.
first one I ever saw like this the customer was at a nearby shop for two weeks and they couldn't figure it out. Customer towed it tow me and I solved it while car was still on the trailer.
Nice!
Lots of carbon inside the EGR but looked brand new after cleaning. Great jobThomas! 😀👍
Almost brand new.
thanks this was really helpfull -specially when you"re in the middle of nowhere !!
Thank you for watching!
Never seen that Thomas
And I know why, don't see to many VW or Audi's 👍👍 I know who is my to go guy 😉 Here's where ky garage Ramon would of done a cranking vacuum test.
I'm sure he would have spotted this quite quickly! =)
Hi Thomas. after watching a lot of golf tdi video not starting .came across yours .problem solved. your a genius .Many Thanks
Thank you for watching!
Great job mate, another top video full of info 👍
Thank you Gerard!
Saved me a headache thanks a lot
Thank you for watching.... the $ button under my videos is active.
Interesting.dont think ive ever worked on one of those
I'll send a few your way! LOL
What an interesting design flaw, presumably motivated by some kind of emission goal. I wonder how it would run if the butterfly valve was left in an 'always open' position. I never would have made that diagnosis without outside help.
Many people delete the butterfly (shut-off flap)... excess carbon build up is usually caused by stop & go / low rpm city driving. Cars that are highway driven develop soot deposits more slowly. Excess PCV fumes cause the exhaust soot to stick & harden over time. Drive it like you stole it!!! At least a couple of times per week! LOL
Made my night. Thanks Dude
Thank you for watching!
You know I don't own any German made cars but I'm saving all this in my data banks for when we move there. Yes, my wife is home sick. I'm holding her here as long as I can though. :)
You need more German friends... once she's surrounded by enough, she won't be home sick! =)
Thomas, would this adaptation, to the minimum allowance of EGR operation have affected the readings of NOX to a point where the vehicle would still pass the emissions test in the old air care days?? Good Video Man. I will be watching a lot more of these.... can you guess why? Yep, Back in the Hood!!
Nice to hear! I think the change in routine will be good for you!
I think those TDI's (diesel engines in general) were only checked for Opacity (amount of visible smoke) back in the day. NOX may be higher with less EGR (good point), but I can't say how big of a difference there is between minimum EGR flow setting and maximum.
I have never seen a egr system or air shutdown plate on any of the diesels I have or looked at , just a fuel shutoff and it stops and starts just the same . Interesting
This one also has a fuel shut off... but you can really feel the difference in how quickly the engine stops spinning when the air passage is blocked!
@@EXOVCDS Without it, the engine diesels for maybe a half a second longer.
@@jtm198 Freewheels a bit.
Can't remember I've seen one without a shutdown plate. It is also used for egr flow by controlling the opening of the valve. Not the case here on this engine I think.
@@DylanRabier Correct. Earlier diesel's only had fuel shut-off... yes, newer TDI's (Common Rail) use the shut down flap to manipulate / produce vacuum in the intake for better EGR operation.
Well good news for you, binge watched all your new videos, and CZcams played double ads at the start of all of them and a couple ending ads too, so I made you a couple pennies 😉
Much appreciated!
ALLLRIGHTY THENNN. Good information. Thanks for posting.
Wish I could have you work on my 1.9 ALH. She needs a new clutch after a stage 1 Malone tune and unknown amount of miles on the clutch prior to purchasing it. Looks like a daunting job for a weekender.
Transmission removal video: (if you have not seen it yet)
czcams.com/video/XJshGRgU28g/video.html
It's a bit old... sorry (lighting is bad).
Can be done as a DIY... but you need to be careful!
Nicely explained Thomas 👍
Thank you and thank you for dropping by!
Good for another 200,000KMs 👍
Yup!
:-)) Have a great start into the new week, Thomas ;) All the best, Sunshine
Thank you... you too!
your the man...... great information! You solved my problem with this video.
Thank you for watching!
Dealing with a 2013 golf TDI. Crank, no start. Fuel and timing solid. Removed EGR/flapper assembly (stepper motor driven in this model) and let air intake wide open. Still no start. Jumped relay 100 and it made the radiator fans spin full speed. Still no start. Think maybe I need to reinstall the EGR/flapper assembly before the car will start? Or can it start without those items? No codes from torque pro w/ Bluetooth scanner. Not sure which cable is correct to use with vcds on this year model so can't check vcds til I get the right cable. Any help is appreciated. Thanks
Check if turbo / turbine wheel is stuck. Remove exhaust clamp at turbo / DPF, loosen DPF and move aside... try to get fingers on turbine wheel. Other option is to remove intake tube at turbo inlet and check for compressor movement when engine is cranking.
Will the intake ports be just as build up with carbon?.
The reason I ask is I'm thinking of doing a total decarbonisation of the engineer and turbo. As I have capped of the EGR intake from both ends.
Yes, the intake ports could also be restricted. You'll be able to tell once the intake manifold is off.
Nice and clean!
Good enough for Canada!
like brand new again!
Almost! =)
EGR code 17811 do you think it could be thrown because of carbon buildup? Or maybe n18 I really enjoy your videos man
Have you checked if the egr valve holds vacuum, by using a vacuum pump to activate it? If yes, how much vacuum is it getting when the engine is running (vacuum gauge attached to egr vacuum hose). If the vacuum is low, check the hose from the valve to the N18. If the hose(s) are fine, make sure that the N18 gets good vacuum from the vacuum pump. If vacuum from pump is ok, it's probably a faulty N18. A restricted intake can affect air flow (ECM uses air flow info to check egr operation). If the egr valve looks carboned up, remove the egr valve and clean it (the intake manifold as well if it is bad).
I OWE YOU A BEER!!! Such an easy/instant fix.
Thank you... paypal link is on my website (fkh161 link in the description).
LOL, I won't hold you to it... many others don't either (follow through with it).
If you do, I'll send you some of my channel stickers.
Thank you for watching!
@@EXOVCDS oh, cool - thanks for the link! Now that just need to figure out why I’m getting back smoke under kid at high rpm. Likely also carboned EGR?
@@dwongu Remove the EGR and check how much carbon is inside the intake manifold. Lack of air / boost can cause black smoke.
@@EXOVCDS yep, on it tomorrow. Thanks, mate - glad to find your channel! Keep up the good work.
Thank you very very much
Thank you for watching!
Hey man I'm not sure if this would be the same on my 1Z would it? Cause I'm having a crank but no start issue as well. Just curious if it's kinda the same deal. Thank you!
I don't think that the 1Z uses / has an "intake air shut off flap"... if your engine has it, then yes, follow the video and check yours. Otherwise:
- does your injection pump receive power when cranking the engine?
- do the camshaft, crankshaft & injection pump TDC marks line up when the engine is at #1 TDC?
- when did the "crank no-start" happen? All of a sudden or did you notice power loss / smoking exhaust before the crank no-start happened?
The more info I have, the better I can help.
What is that pod called? The plastic shaft of mine is broken.
Only available as a complete unit (EGR & Shut Off Flap):
www.ecstuning.com/b-wahler-parts/egr-valve-assembly/045131501l~wah/
all turbo engines should have that valve, it's good in case you have a ranaway engine
All Diesel / Diesel Turbo engines... I am not aware of Turbo Gasoline engines being able to runaway.
@@EXOVCDS
You are right, in my mind there is only diesel, I am a naval engineer, thanks for the videos cheers from Uruguay
@@m0l0mix Thank you for watching!
How about a no start no crank .on a 2006 tdi after disconnected battery😦😦😦👍👍👍
Only disconnected or swapped?
Tried to clean it today..coudn't get the bolts screwed out.. really =]
If the bolt heads are stripped, use a bolt extractor socket. It bites on the outside of the bolt head and breaks them loose.
@@EXOVCDS i'll try.. I kinda broke IT.. Repaired with some super glue... 😂😂
Hey there Thomas.
Don't modern diesel fuels burn in a way that produces a lot less carbon buildup?
How could this be happening?
Is the ALH special?
"Modern" yes... ALH TDI is 19+ years old. ALH is indirect injected. Common Rail TDI's are direct injected and fire the injectors multiple time during an ignition event. ALH only fires once. ALH also does not have a Diesel Particulate Filter that traps the exhaust soot / carbon.
@@EXOVCDS Thomas ALH engine is direct injection Engine, like pumpe düse, or common rail but simple like you said
Sorry... my bad... I was thinking they still had a dish where the glow plug is. I haven't had an ALH head off of an engine in a while. Thanks for the correction! Send me your mailing address and I'll send you some of my channel stickers!
EGR's are a pain in the arse lol glad I don't have one 👍😂
Yeah, they can be... this is a real nice & simple design and has easy access. I hate to say it... gravy work.
I feel smarter
Take 2 aspirin and call me in the morning.
Did you remember to check if the brake pedal goes all the way to the floor when the engine is running?
No... I just wrote a note to myself and stuck it to my laptop! I'm sure I'll see another one this week!
That was a lot of carbon. So much better after the cleaning.
You ain't seen nothing yet! Pfff... you gotta see what a plugged EGR & intake look like!
hello, I have a problem with a vw caddy 1.9 td 75 hp bsu engine, I have changed the engine for having broken connecting rod, the new engine once already assembled gives me this problem: in relative it sounds good no witness skips, but a you see that he accelerates between 2000-2500rpm the red lamp on the oil lamp jumps, I tell you that I did an engine wash, I have changed the oil pump the pressure sensor the level sensor the support of the oil filter, I have put the pressure gauge is fine, the oil goes up where the rocker arms ... but the problem continues, access it and 200-2500rpm arrives and the oil indicator leaps, in the vcds there is no fault, please if you can help me I am desperate with the problem, thanks in advance
What year caddy... so that I can check wiring diagrams.
Delete the egr. $35 fix and you'll never have to work about that
EGR helps control combustion temperatures and increases fuel economy... check engine light will be on after the delete if the ECM Tune is not changed.