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1988 mustang gt smoking

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Old 12-22-2011, 10:20 PM
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DennisC6
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Default 1988 mustang gt smoking

I have a 1988 mustang gt. I just bought it and the guy that had it before me had said it was overheating and as soon as i got it i have it a tune up and put a new radiator in it and i have it running and i had my friend fallowing me driving it and when i get on it i have blue smoke comming out of the drivers side exhaust and the other side is just white but when its at a idle there is no blue smoke. And when i changed the plugs on it they were all ddry besides piston #8 the plug was covered with oil. Any ideas what this could be?
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Old 12-23-2011, 03:08 AM
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Project 5.GO!
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Head gaskets are shot.
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Old 12-23-2011, 06:06 AM
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DennisC6
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is that the reason im also getting blue exhaust out on the drivers side?
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Old 12-23-2011, 11:55 AM
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Originally Posted by DennisC6
is that the reason im also getting blue exhaust out on the drivers side?
The blue smoke is burning oil. The white is burning coolant.

The white smoke on the passenger side is probably coolant seeping into a combustion chamber from a leaking head gasket.

The blue smoke is coming from the #8 cylinder, probably from bad rings, or an out-of-round or tapered cylinder wall.

Unfortunately, you will be needing some work done to it pretty soon. Keep your oil and coolant filled up until you get it to the mechanic, and while you are at it, check the coolant for signs of oil, and vice versa.
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Old 12-23-2011, 03:47 PM
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im thinking the valves are bad on the head so i went and bought some gt40p heads for it. so im going to put new gaskets and new heads on and see if thats the problem. but do you think the valve seals could be leaking?
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Old 12-23-2011, 08:17 PM
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valves seal could be a possiblity BUT I doubt that would only be in one cylinder, more likely rings in #8 are bad.
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Old 12-23-2011, 08:42 PM
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why would they be bad in only one?
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Old 12-23-2011, 10:16 PM
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Cylinder could have an irregular wear pattern. When I rebuilt my engine, I had to get it bored because there was no way I could have honed out the groove and ridge at the top of my #8 cylinder. One or two of the others had a couple grooves, and some were perfectly smooth, but #8 was pretty bad. In general, the ones to the outside had the most irregular wear, the inside ones were mostly decent.

Piston rings will sometimes slop around a little at the top of the stroke as they get some wear, so there is usually some taper or grooving in a circular pattern near the top of the cylinder and a ridge at the very end of the piston's travel. This can let oil pass into the combustion chamber.
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Old 12-23-2011, 10:55 PM
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Bubba 95SN
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Do compression test. Take reading, add teaspoon of oil in cylinder, and if compression comes up considerable it is rings.
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Old 12-24-2011, 12:47 AM
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I've been reading about the GT-40 and GT-40P from Explorers regarding EGR ports, and ppl have mentioned that certain headers won't fit the GT-40Ps because of the straight-out spark plugs, just a heads up.
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