Occasional Smoking

[Brian Pleet]

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