Question about 1999 Chevrolet Malibu
There could be a lot of air bubbles in the coolant. The oil can turn a chocolate milk color ( could also happen with a bad lower intake gasket on the V-6). You could see white smoke coming out of the exhaust. The engine could develop a misfire do to lack of compression or coolant contamination. There may be an external oil or coolant leak. There are a couple of test to check to see if there are hydrocarbons in the cooling system. One is to use a four gas analyzer to sniff the coolant. The other is the bulb style with the blue liquid. Seem from the radiator is pumped through a fluid and if the fluid changes from blue to green there are hydrocarbons (exhaust) in the cooling system. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!
Posted on Feb 25, 2012
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Posted on Jan 02, 2017
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