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Smoking bad out of exhaust

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Old 05-22-2006, 06:58 PM
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redmustang83596
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Default Smoking bad out of exhaust

When I really get on it, full throttle and bang in through the gears, there is alot of smoke comming out of my exhaust. I was thinking it was bad piston rings. Is that right? Or would something else like valve seats cause this?
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Old 05-22-2006, 07:03 PM
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smkshw
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Default RE: Smoking bad out of exhaust

stupid question,but,black or blue?
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Old 05-22-2006, 07:11 PM
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P Zero
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Default RE: Smoking bad out of exhaust


ORIGINAL: smkshw

stupid question,but,black or blue?
+1 or is it white?
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Old 05-22-2006, 07:38 PM
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gambit90lx
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Default RE: Smoking bad out of exhaust

is white smoke bad????
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Old 05-22-2006, 07:42 PM
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AdderMk2
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Default RE: Smoking bad out of exhaust

thick white smoke generally indicates a bad headgasket
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Old 05-22-2006, 07:45 PM
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5.0stanger
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Default RE: Smoking bad out of exhaust

Valve seats wouldn't cause smoke, maybe valve seals or guides.
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Old 05-22-2006, 07:45 PM
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sgt_pepper17
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Default RE: Smoking bad out of exhaust

to test for rings... pull the PCV and rev it up... if you get a bunch of smoke comin out of the PCV hole then yeah... it's rings...
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Old 05-22-2006, 07:46 PM
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P Zero
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Default RE: Smoking bad out of exhaust

General rule of thumb , blue smoke= burning oil (bad rings, valves), black smoke = unburned fuel (too rich, not fully combusted), white smoke = water vapor, some white smoke is normal, but if its thick and smells (other than normal exhaust), bad head gasket, cracked head, etc.
-P.
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Old 05-22-2006, 09:03 PM
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2 kwik
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Default RE: Smoking bad out of exhaust

ORIGINAL: sgt_pepper17

to test for rings... pull the PCV and rev it up... if you get a bunch of smoke comin out of the PCV hole then yeah... it's rings...
that is not always true because inturnal pressure will cause it to come out.... compression rings will put oil out the top and be pulled in from the valve cover thru the throttle body....find out what color....
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Old 05-22-2006, 09:40 PM
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TBird232ci
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Default RE: Smoking bad out of exhaust

ORIGINAL: 2 kwik

ORIGINAL: sgt_pepper17

to test for rings... pull the PCV and rev it up... if you get a bunch of smoke comin out of the PCV hole then yeah... it's rings...
that is not always true because inturnal pressure will cause it to come out.... compression rings will put oil out the top and be pulled in from the valve cover thru the throttle body....find out what color....
Internal pressure is caused by blowby, known as bad rings. There is generally a slight vacume, or slight pressure in the crancase, but if its excessive, then you have a ring issue.
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