[s-cars] Occasional Smoking
Brian Pleet
subscriptions at strategico.ca
Wed Nov 6 23:51:29 PST 2013
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;
- #1 9.6, 10, 6,6
- #2 10.5, 7
- #3
- #4
- #5
-
Followed by cleaning the ISV, replacing the O2 sensor, replacing 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.
If I measured mileage it appears to be down. Oil consumption is normal,
perhaps a little elevated.
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