1998 Volkswagen Jetta Logo

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Keenan Whited Posted on Jan 29, 2015

I have a 98 jetta tdi that's is revving high and is blowing out a lot of black smoke

5 Related Answers

Richard Raynor

  • 225 Answers
  • Posted on Dec 02, 2008

SOURCE: 2006 VW tdi black smoke while accelerating

Hi
The only sensible way forward is to get a list of fault codes from the onboard diagnostic system and take it from there. You could either go to a VW dealer, or if you are technically minded you could buy a £15 interface cable, download some free "VAG diagnostic software" and run it on a portable computer.
There are lots of possible reasons for the problem and guessing will not really help. If these suggestions turn out to be sound, please give my reply a "Fixya!"rating, If they do not, please hold off rating and add a comment with more details so I can try to help you further. Cheers, D

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Anonymous

  • 4 Answers
  • Posted on Apr 21, 2009

SOURCE: black smoke and hesitation in first gear only

Could be low turbo boost pressure,get the charge air system checked

Anonymous

  • 57 Answers
  • Posted on May 28, 2009

SOURCE: white smoke wen starts from cold an hunts 20 secs.

sounds to me like your idiling too high

badealer888

Stan Cather

  • 414 Answers
  • Posted on Jun 19, 2009

SOURCE: 2005 jetta tdi high idle

If a/c, headlights,.. other stuff is on 950 is about right.

Anonymous

  • 1 Answer
  • Posted on Nov 09, 2009

SOURCE: Black smoke on acceleration diesel x-type jaguar

can anyone tell me where the intercooler is on a 05 plate jaguar x type 2.0 diesel thanks

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Was on freeway and lost power. trouble restarting but no power and a lot of black smoke and some slight knocking. Left two black soot marks under car at rear and behind turbo or exhaust manifold, car has...

If you have a lot of black smoke then its over fueling getting to much diesel to the cylinder's. Sounds like an injector problem with the slight knocking noise. Che ck the return pipes are not blocked. If the smoke is dark brown then this is a problem with the valves on the intake manifold which control's the intake of exhaust emmisions.
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My 2002 jetta blows blue smoke a lot of blue smoke out of tail pipe but not all the time.????

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2003 tdi automatic, smokes black on every start

Unless you want to scorch the nozzles and risk burning a hole in a piston, do NOT use John Deere conditioner in a TDI. The injection pressures/nozzles are not tolerant of John Deere conditioner. smoke = bad.....high egts....and high egts = melting valves.  Smoke means soot, soot clogs the intake manifold and the vanes in the VNT, And soot from the EGR system. And once that soot is in there, it can harden to what you swear is something melded with your intake manifold's metal. Black smoke on a diesel is power you can see but not use, and the amount of over fueling required to produce it can have disastrous effects on the life expectancy of your engine. Melted or holed pistons, coked up injector tips, coked up rings, stuck vanes in the VNT turbo, all problems that can arise from a TDI that's constantly and consistently over fueled past the smoke limit. Leaving it in 2nd gear will have the turbo revving at a high rate and waring it out prematurely and can cause damage to the Vanes in the VNT for constant over boosting due to high revs. Good luck and i'ld look for a different mechanic who under stands Modern Diesel Racine Design Engines. 
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2002 jetta tdi lost power and produced a lot of smoke from under?

when my 02 jetta did this, i had to replace the mass air flow sensor. hope this helps
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2001 jetta tdi auto. only runs 345 miles on a full tank of diesel

the catilic converter may be clogged. this could b.e the reason for the black smoke .it could also cause poor fuel mileage .you might try removing it and see if the black smoke stops .if it does change it and your fuel mileage should improve
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