MK5 Golf GTI
All Things Mk5 => How to Guides / Troubleshooting => Topic started by: Vag-mk5 on March 12, 2023, 08:36:07 pm
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Hello everyone, I have a problem with my gti
If the car stands still for a day and I start it, it has over 30 misfires on cylinder 4 read with VCDS
but only the first 20sec after that nothing more and it runs quietly
and as soon as the engine has reached operating temperature and i brake at traffic lights, cylinder 1 occasionally misfires when idling
so far i have changed the parts and it was still the same error
spark plugs
Ignition coils
Injectors
Compression measurement(good)
Mass airflow meter
PCV
lambda sensors
I really don't know what else to do, please help, thanks :jumping:
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The small cam chain and its tensioner.....also the three plastic rings in for the oil pressure to the actuator can all create misfires and rattles.
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Yes, the chain and tensioner were also changed 2 weeks ago
And the 3 rings from the housing also changed
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Any coolant loss/signs of coolant on spark plugs?
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Any coolant loss/signs of coolant on spark plugs?
no, there is no loss of coolant or it is not noticeable, I changed it completely a year ago and the level is still between min and max
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I done my chain a couple weeks back then had this, was driving me potty turnt out the middle of the three rings in that housing broke and cam out and i didn't notice which caused this issue.
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Had the same symptoms before, especially the misfires on stop. It ended up being the N80 Purge Valve so might be a good thing to check.
https://www.mk5golfgti.co.uk/forum/index.php?topic=132469.0