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I have a 1995 v6 135000 miles, run dino oil with changes every 3500. uses about a quart between changes, isn't on the driveway, but the plugs are clean.
Five days ago I was doing city driving (half hour) and I started getting billows of pale blue smoke out of the exhaust. being in CA, motorists were honking / yelling at me within a block or two, to fix my car or park it. I figured I lost a ring, threw a rod, something. But the car performed ok. No lights or warnings on the dash.
I wondered if it was even oil burn, since unlike my experience with my pre-catalytic converter cars' oil burning this smelled weird, was not as dark blue as it could have been for oil, and seemed to disappear within 50 ft, where true blue oil burn clouds could go floating a quarter mile.
I put risolone in it in case I stuck a ring, and CD2 in it in case it needed some thickener if the walls were scored. By the time I was putting those in it was already smoking less, and a day later I was back to normal. But yesterday, after driving every day since, it suddenly happened again after a half hour of driving.
I have searched the site and think it could be the Cat converter, maybe it screws up when it heats up, but again, I dunno how to diagnose this. The car does knock a bit more now, like I need premium instead of midgrade to go up hills, so possibly I have some back pressure off a bad converter.
Any ideas appreciated. I see possible bypass tubes to try.
cheers,
posted by 63.205.17...
, Fri, 23 Jul 2004 18:27:54
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