What would make only cylinder 7 overload full on sparkplug

Asked by Nov 19, 2015 at 02:53 PM about the 2003 Ford Explorer Limited V8 AWD

Question type: Maintenance & Repair

1 Answer

35,475

If it is miss firing on #7... the spark plug, coil on plug or fuel injector will likely be at fault. If the #7 spark plug is fouled... it could be a stuck open fuel injector, bad valve guide seal or piston ring or cylinder issue. Could also be a head gasket issue. The question you asked is very vague, please be more specific and supply more info.

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