Question about 2002 Volkswagen Jetta TDI
When was the last valve adjustment?
An old timing belt and T-belt guide will offset the timing.
Can a shop do a compression test on the engine?
Do a motor flush before the next oil change to free up the rings and clean out the head.
This is the inexpensive method to restore compression.
If it's the org. engine it will has over 80,000 miles on it.
It's normal to has the valve stem seal/oil seal on the head to leak oil into the cyclinder.
The smoke you see is the motor oil drop from the seals.
It land on the top of the cyclinders and it create black smoke at start up.
The inexpensive fix is to start using high mileage oil with seal conditioner.
This will help soften the rubber seals and help reduce internal oil leak.
The correct fix is to wait until it's time for a head gasket replacement and let the professional service the head.
Complete head service is the only method to stop this internal oil drip problem.
Posted on Aug 24, 2009
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Posted on Jan 02, 2017
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