[s-cars] Occasional Smoking - continued

[Cody Forbes]

Doh! I forget that there's such a thing as a non turbo 5cyl quattro sometimes.

-Cody Forbes (mobile)

On Nov 7, 2013, at 5:32 PM, Scott Justusson <qshipq at aol.com> wrote:

> He hasn't put the turbo in yet Cody!  White 'smoke' could be a failed/failing/choking catalyst, could also be leaking headgasket.  The white smoke from catalyst could be related to the HC issue or the HG problem.  fuel pressure regulator, fuel injector/s, MAF, vacuum leak, TPS, 02 bad, bad engine temp sender.  White smoke from leaking headgasket should result in a sweet smell from the exhaust.  You should also do that leakdown warm, and then check for pressure in the A/F reservoir
> 
> All that said, your compression and leakdown don't look like the problems would be internal.  I bet you flunk test/s in the fuel diagnostic tree.
> 
> HTH
> 
> Scott J
> 95.5 S6
> 
> 
> 
> -----Original Message-----
> From: Cody Forbes <cody at 5000tq.com>
> To: Brian Pleet <subscriptions at strategico.ca>
> Cc: s-car-list <s-car-list at audifans.com>
> Sent: Thu, Nov 7, 2013 7:58 am
> Subject: Re: [s-cars] Occasional Smoking - continued
> 
> I very recently had a turbo failure that would smoke only occasionally. It 
> started out as once a month or so it would smoke horribly while sitting at a 
> stop light. It got more frequent until it was roughly 1 out of 5 times I let the 
> engine idle for more than 10 seconds. Also on decel down hills occasionally. I 
> initially thought it to be a sticking piston ring, but investigation proved it 
> to be the turbo oil seal to the turbine side.
> 
> -Cody Forbes (mobile)
> 
> On Nov 7, 2013, at 3:13 AM, Brian Pleet <subscriptions at strategico.ca> wrote:
> 
> > My 90 90Q seems to know it's approaching 250k km by acting her age.
> > 
> > For a few weeks the idle went wild, she belched (white) smoke erratically,
> > she'd threaten to stall (but never did) on deceleration.
> > 
> > Having gained my full attention, I did a compression test, followed by a
> > leak down test; Head was rebuilt @ 125k, lower block is all original. I
> > have a rebuild able 3B avalable for building a sleeper car.
> > 
> >         CYL   COM           WET    DRY    LOSS%
> > 
> >   - #1       9.6,            10.0      6.5     0%
> >   - #2      10.5            10.5      7.0     17%
> >   - #3        9.7            10.5      7.0     5%
> >   - #4        9.5            10.0      6.5     0%
> >   - #5        9.7            10.5      7.00    0%
> > 
> > Cleaned the ISV, replaced the O2 sensor, cleaned air filter, replaced the
> > rotor and cap and put it all back together. For the past 3 days she's been
> > purring...except
> > 
> > The plugs are covered with a black dry soot and it smells of hydrocarbons.
> > On occasion, if I watch in the mirror, I can cover the car behind in white
> > smoke (like James Bond) If I measured mileage  it appears to be down. Oil
> > consumption is a little elevated.
> > 
> > She's giving me hints but I can't talk to her (blink test says she's fine)..
> > 
> > 
> > Suggestions?
> > 
> > 
> > Brian
> > 90 90Q
> > 95,5 URS6
> > 09 TT on the way
> > _______________________________________________
> > S-CAR-List mailing list
> > http://audifans.com/mailman/listinfo/s-car-list
> > http://www.audifans.com/kb/List_information
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information