[Vwdiesel] TD swap black smoke from using NA exhaust?

[Nate Wall]

I had real bad black smoke like that on my Jetta TD. I replaced the injectors
and timing belt (it got retimed w/ a dial indicator) and the smoke
disappeared, so I can't say for sure which it was, but the nozzle holes in
the old injectors looked worn a little bigger than the new ones!

--Nate

Milton Kaplan wrote:

> I recently had an 86 Jetta TD engine swapped into my Caddy. Runs fine,
> much faster than the 1.6 NA.  Engine starts fine, no start smoke and runs
> very smooth.
>
> Basically the NA exhaust was welded back to the downpipe as a matter of
> convenience.  I plan to get rid of the stock downpipe and exhaust, opting
> for a 2 1/4 or 2 1/2 system.
>
> Meanwhile I am wondering if the current restrictive exhaust is causing
> black smoke under load. I get the smoke from about 1/2 throttle under
> load especially bad in 4th and 5th. Puts out quite a smoke screen. My
> thought is that the restrictive exhaust is not allowing the turbo to
> spool up fast enough causing overfuelling. Probably makes sense to change
> exhaust before tampering with max fuel screw on pump.
>
> ________________________________________________________________
> GET INTERNET ACCESS FROM JUNO!
> Juno offers FREE or PREMIUM Internet access for less!
> Join Juno today!  For your FREE software, visit:
> http://dl.www.juno.com/get/web/.
> _______________________________________________
> vwdiesel mailing list
> vwdiesel at vwfans.com
> http://www.audifans.com/mailman/listinfo/vwdiesel