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1996 Oldsmobile 88 1SA 4dr Sedan -

1996 Oldsmobile 88
Trim Info:
Front Wheel Drive, 4 Door Sedan, Large Car
19 mpg city / 30 mpg hwy
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January 12, 2013, 5:05 pm

Chris H

Question: Is it a leaky intake?

When idling it isn't smooth like it should be. When driving and hit any kind of incline I lose power and have to step on it. Then it bogs down and sounds like the tailpipe is under water. There is a slow usage of antifreeze and a sign of liquid sitting on the top of the head where the intake manifold (plastic plenum) meets the engine. Even if going slow and I give it a decent amount of gas it will bog down.

January 22, 2013, 3:23 pm

Elizabeth K

That could be, or you could have an external coolant leak (at the intake) and have a stuck valve.

To check for a blown head gasket, check to see if there are air bubbles in the radiator overflow tank when the engine is held at about 2500rpm. Doing a compression leak-down test will isolate the cause of the low compression and eliminate most doubts.

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