Question about 1987 Oldsmobile Ciera

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I have a 87 olds cutlass ciera, good fuel, good spark. how do you tell if it has bad compression?

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  1. You have to do a compression test. It requires a special tool that goes in the spark plug hole. If you just want to check your compression in general, you can probably rent or borrow the guage. If you are looking for specific info, for example bad rings or bad valves, it might be wiser to have it done in a shop with some experience.

Posted on Jul 15, 2009

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We have a 1993 cutlass sierra with less than a 100,000 miles, all of a sudden it started sputtering and shaking when driven, any suggestions what could be the issue


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1 Answer

Bad engine dead miss in 1994 oldsmobile cutlass ciera


1. You need to verify that the spark plug wires are indeed going to their proper cylinders and not crossed.

2. You need to check all the cylinders for the ability to achieve full compression. I had a vehicle that had a Engine Miss code on the OBDII computer and couldn't find any reason for it until we checked the compressions and found 1 cylinder had none which was causing the code to appear.

Good Luck
Rich Lilja

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