Sparks when starting car

Asked by Jonron44 Nov 25, 2019 at 04:31 AM about the 2004 Pontiac Sunfire SL Coupe

Question type: Maintenance & Repair

So when I start my car, it looks like theres large
sparks/ a fire, but disappears once the ignition
stops. [Engine runs normally otherwise)

1 Answer
26,255

taver91 answered 4 years ago

If you can see a spark, it is likely your plug wires are leaking electrical current and you are getting "cross talk" between cylinders. A simple test is to observe the spark at night or a dark garage and determine where it is coming from. Once you confirm it is the plug wires, replace them with new.

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