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Dan, Technician
Category: Chevy
Satisfied Customers: 24587
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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2003 Chevy Cav, Started P0308 Cyl 3 misfire, changed (and

Customer Question

2003 Chevy Cav, Started P0308 Cyl 3 misfire, changed (and gapped plugs) now havee P0300 code,
Submitted: 1 year ago.
Category: Chevy
Expert:  Dan replied 1 year ago.

Hello, my name is***** usually means the coil assembly has failed. You can buy a spark tester from parts store for around $10 and check to see if each coil tower can jump a 25kv gap, if not replace the coil assembly. Let me know how it goes or if you have more questions, thanks.