turbonem
Veteran Member
2002 jetta wagon, 5 speed
After a cold start the timing seems to be retarded similar to getting air in the supply or the case pressure regulator valve fell apart.
Case pressure valve is good.
No external leaks on the supply.
Once it accelerates it chokes,
Smokes, knocks then gets past it.
Oem fuel filter and o rings on the fuel thermostat have been changed.
No change in the timing symptoms.
Its worse on warm days.
572,000 miles.
Thoughts?
After a cold start the timing seems to be retarded similar to getting air in the supply or the case pressure regulator valve fell apart.
Case pressure valve is good.
No external leaks on the supply.
Once it accelerates it chokes,
Smokes, knocks then gets past it.
Oem fuel filter and o rings on the fuel thermostat have been changed.
No change in the timing symptoms.
Its worse on warm days.
572,000 miles.
Thoughts?
Last edited: