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Question
90 mazda 133 cu in, single cam, 12 valve, I had the head gasket replaced. It when started cold now ! smokes so bad its a bug killer. The head was checked n tested for cracks. the odd part is once warm it uses no oil at all. you can shut it down for hours n restart n there is absolutly no smoke. none when driving. i put valve seals on n it had no effect. when i presurized cylinders i had no leakage. compression is good. there is a small crack in exhaust down pipe n when started cold it accually gets raw oil running down. it does this even wiyh fill cap off. So it seems to fill exhaust then quits in 20 minutes. then no problem again until it sets overnight. i can start it all day long without apuff of smoke !! I had no oil problems before haed gasket was changed.
Submitted: 281 days and 15 hours ago.
Category: Car
Value: $9
Status: CLOSED
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Optional Information
1990 Mazda 626 DX 133 cu. in.
Already Tried:
Put valve seals on under air presure. didn't see any noticable problem. put straight 30 W oil and Oil tretment to see if i could see a diffrence. car has 150,000 miles n runs great. after 5 mounths plugs showed very little oil burn , but some. IT relly seem to load up on oil in the first 5 minutes or less then it burns out whats in th exhaust and is fine after that. Ilive in alaska. it did this in the real cold n the same this summer
Posted by
Neal
281 days and 15 hours ago.
Answer
It sounds like you have a valve guide issue. If the guides are worn it will cause this problem just as if the valve seals are bad.
281 days and 15 hours ago.
Reply
the valve giudes where not bad before head gasket was replaced
281 days and 14 hours ago.
Reply
their was no giud issue berfore gasket change
281 days and 14 hours ago.
Reply
their was no giud issue berfore gasket change, my cell phone provider is not in you options
Accepted Answer
From the information you gave me, that is my first impression. If the guide seals are new if would be the guides unless the smoke is from water and not oil.
Expert:
Neal
Pos. Feedback:
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Accepts:
276
Answered:
6/10/2009
Mechanic
Self employed all around Auto Repair and Muscle Car and Drag Racing enthusiast
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