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Ivan, ASE Certified Master Technician
Category: GM
Satisfied Customers: 4871
Experience:  ASE Master Tech.20+ years exp. 9 years self employed. Participant on AutoLab Radio broadcast
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spark plugs sparks under hood called lighting..rotor cap the wires

Resolved Question:

spark plugs sparks under hood called lighting under the hood i think they call it and it is missien ihave change the disutbor u know the rotor cap the wires it stop for a while and now its doing it again why is this
Submitted: 8 years ago.
Category: GM
Expert:  Ivan replied 8 years ago.

Hello Justin, where do you see the sparking?


Your JA Expert,


Customer: replied 8 years ago.
it looks like the base of the plugs u know the silver part it sparken on four thoe 2 on each side if this dont help please ask again
Expert:  Ivan replied 8 years ago.
I am going to recommend you replace the spark plug ignition wires. It sounds like the wires have broken down allowing the spark to escape the wires and jump to the metallic engine block and manifolds. I think when you replace the wires, all should be good.
Customer: replied 8 years ago.
i have already replaced the wires there not even 3 weeks old yet could they be bad wires or somethin
Expert:  Ivan replied 8 years ago.
If they are sparking near the spark plugs, either the wires are to blame or the wires are not secured all the way onto the spark plugs. Make sure wire has some dilectic grease in the boot of the spark plug and see if you can shove them onto the spark plugs further. If they are not secured fully onto the plugs that could cause your issue as well.
Customer: replied 8 years ago.
so even if i here them like snap on it may still not be all the way on right and the grease is going to help lube it to get the wires as far up as possible correct
Expert:  Ivan replied 8 years ago.
Correct. sometimes the contact connected to the wire will slide down the boot, so the boot may not be fully seated on the spark plug and the clip that locks to the spark plug may be slightly exposed allowing the spark to jump from it. You can also remove the wire from the plug and see if you can pull the wire so the contact sits deeper into the boot then reattach it to the spark plug.
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