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Ask Daryl Your Own Question
Daryl, Shop Owner, Master Mechanic
Category: Cadillac
Satisfied Customers: 12549
Experience:  28 years experience, Master Mechanic
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2000 Deville: started running rough..I had a misfire..mile..sparkplugs

Customer Question

My 2000 Deville started running rough/ I pulled the codes and it said I had a misfire on #2.What would be the likely cause? The car has 135000 mile and the sparkplugs were changed at 10000 miles
Submitted: 7 years ago.
Category: Cadillac
Expert:  Daryl replied 7 years ago.
The most likely cause of the problem is either a bad coil or bad/plugged injector the best line of action is to switch one coil with another and see if the problem follows the coil if it does the coil is the problem.