Question about 2001 Volkswagen Jetta TDI
What is the color of the smoke? If it is white then you have unburnt diesel meaning you have a leaky injector or low compression problem. Do a compression check. If the smoke has a blue tinge then you possibly have a turbo going out and that needs looking at immediatly. If they go out they can take the engine with them. Un clip the pipe going into the intercooler and see if you have oil build up in there. If you do replace your turbo
Posted on Dec 27, 2009
I have a similar problem - though my timing is right exactly where it should be
I'm wondering if it has something to do with the build up of carbon in the manifold... the smoke has a blue gray hue as well and defiantely smells like diesel
But I'm also zen with the fact that there's always going to be smoke upon a cold start up... it's the price you pay for a diesel... now if I can just get it back up to 50mpg instead of the 44 I've been getting I'll be happier
Posted on Nov 04, 2009
Your car is out of time. Mine just had the same problem adjusted the timing and now it's fine.
Posted on Oct 13, 2009
White smoke is either coolant burning or unburnt diesel fuel. If you aren't having a problem losing coolant then it's diesel fuel. Your preheating system is not functioning properly, the cylinders are only marginally warm enough for incomplete combustion. Once the engine warms up the problem goes away. A block heater will temporarily cure the problem but as the weather gets colder it will return. Best get it checked out now. Hope this helps.
Posted on Sep 30, 2009
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Posted on Jan 02, 2017
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