Mechanics

GMC S15 COOLANT PROBLEM

1989 GMC S15 • 175,000 miles

Hello. My truck has the 4.3L v6 engine. Yesterday it started smoking excessively (white smoke) when I cranked it, but it went away once I started driving it. Also, when I remove my radiator cap, it looks like red mud. It has been like this for some time now, but I have never overheated or had coolant in my oil. I replaced the radiator and hoses recently and the red mud color came back. I am also getting fault code 44. O2 sensor is farly new as well. Could this be a faulty intake gasket?
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Guest
March 3, 2013.




The white smoke is burning coolant. It could be the intake or a head gasket. A leak down test will confirm.

Roy



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