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Author Topic: scary noises, lots of smoke  (Read 4971 times)

October 26, 2005, 07:34:57 pm

addautomotive

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scary noises, lots of smoke
« on: October 26, 2005, 07:34:57 pm »
Ok, twice now this has hapenned...

The car (1996 jetta 1.9TD AAZ) is cold, I pull out of a parking lot, merge into traffic with a fair bit of throttle. The car makes a horrible sound, loses all power and starts to smoke (blue) REALLY badly. Barely idles... aweful sounds like bottom end noise. If I wait 10 minutes it starts a little rough but runs fine. Or, immediately after it happens, if I hold it at 2500 rpms for a little while it smokes a lot and then clears up.

Any ideas?
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Reply #1October 26, 2005, 08:29:33 pm

ricosuave

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scary noises, lots of smoke
« Reply #1 on: October 26, 2005, 08:29:33 pm »
turbo?
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Now: 00 2dr Golf TDI, 03 Jetta Wagon TDI, 02 2500HD Duramax - :)
Then: 69 SC Transporter, 84 Rabbit GTI, 87 Fox GL, 91 Golf IDI, 96 Passat Wagon TDI, 97 Jetta IDI - :(
"Everything I save by driving diesel I put back due to poor German engineering and crappy Mexican workmanship!"   :P
Reply #2October 26, 2005, 08:37:14 pm

QuickTD

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scary noises, lots of smoke
« Reply #2 on: October 26, 2005, 08:37:14 pm »
Any abnormal oil consumption? Many miles on the car?

 A stuck or leaking injector nozzle can make a nasty rapping noise, you would swear a rod was coming through the block. It can also cause considerable smoke. Unusual for it to "fix" itself though...
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Reply #3October 27, 2005, 05:43:32 am

addautomotive

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scary noises, lots of smoke
« Reply #3 on: October 27, 2005, 05:43:32 am »
The car has about 300k... not sure though; the odometer is busticated. No significant oil consumption.

I just replaced the injectors. Smog installed the GTD nozzles. And yeah, the smoke and racket goes away after a 10-15 seconds at 2500 rpms.  

Quick TD... you've described the experience though... the first time it happened I thought the valves & pistions were in a death match.

A couple more considerations:

-I just replaced the timing belt, the timing is still slightly retarded.
-I've been noticing more Turbo whine lately... but this could be because I just replaced the downpipe and don't have as much exhaust noise.
-I run the car on waste vegetable oil. However, both times this has happened I was on diesel.
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