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2000 Oldsmobile Intrigue GL 4dr Sedan

2000 Oldsmobile Intrigue
Trim Info:
Front Wheel Drive, 4 Door Sedan, Mid-Size
19 mpg city / 28 mpg hwy
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September 12, 2012, 9:29 pm

Ian K

Question: Coolant Problem?

Coolant problem! No evident signs of leaks but using coolant. Have recently replaced the plenum and gasket that sits above intake manifold as old gasket was defective and coolant was visible & standing in the intake manifold. Once items were replaced, pressure tested the system and stayed at 14 psi. After the repair, I notice a popping noise when the car is heated and still uses coolant. Does the actual intake manifold need to be replaced due to being cracked or warped? Car has 148,000 mi

September 16, 2012, 9:37 pm

Ron W
Expert Mechanic

Could be. There may be an internal leak into the combustion chamber. If you pull the plugs, look for one that looks different than the others. That should be the problem area. Google "reading spark plugs" and you should find some pick of what coolant looks like on a plug.

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