2006 Jetta TDI M5

Jun 18, 2008 9 Replies

Car has low kms (21000) and still gets good fuel economy BUT the snap is gone - I thought it might be bad fuel so I tried different brands but it still runs the same. I've also tried a couple of different diesel additives but no help there.



Any thoughts??


Have you replaced the air and fuel filters lately? And checked for water in the fuel filter?

One load of bottom-of-the-tank diesel can do no end of harm in the TDI system. Been there, done that.

Peter Wieck Melrose Park, PA

On Jun 17, 10:31 pm, Gary Stier wrote: Car has low kms (21000) and still gets good fuel economy BUT the snap is gone - I thought it might be bad fuel so I tried different brands but it still runs the same. I've also tried a couple of different diesel additives but no help there.

Any thoughts??

Have you replaced the air and fuel filters lately? And checked for water in the fuel filter?

One load of bottom-of-the-tank diesel can do no end of harm in the TDI system. Been there, done that.

Peter Wieck

Melrose Park, PA

All done - some one else suggested "Mass Air" but that means nothing to me

Sounds like mine, which is due for removal of the intake manifold and decarbonizing.

more info @

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what does your odometre read??? what sort of driving do you do?? 50/50 city/hwy, all city??

Start by disconnecting the MAF. If that helps, you found your problem.

Has it had any CEL's?? How many miles on it? Auto or manual?

It seems a little early for the problem, but it could be a clogged intake. Kind of a nasty job to remove and clean, but if you are into DIY it can be done cheap. Over at the TID Club

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they have some instructions.

Heres a CRAZY idea. Why not take it to the dealer if its an 06 with 21K on it. Its still under warranty. Let them worry about it.

very good suggestion!

Good point. I totally missed that in the OP's message.

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