Oil-soaked spark plug wire rubber boots can cause misfire or rough idle on GMC S15

Problem Description and Possible Solution

The spark plug wire rubber boots may get soaked with oil, causing a misfire or rough idle.

Problem Data
RepairPal Verified
Average mileage: (–)
Engine affected: 2.5L 4 Cylinder
1 model year affected: 1990
1 person reported this problem
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