Q: 2004 armada code 0303 changed all spark plugs cylinder 8 had oil in it. Bought fuel system cleaner but have to much gas. Help!

asked by on March 23, 2018

I have noticed it putting when in idle and engine light came on. Detected random misfire, changed all 8 spark plugs and noticed cylinder 8 had oil on the spark plug. when started code read cylinder 3 misfire, replaces 3rd spark plug. Still getting 3rd cylinder misfire. Should i replace the wires to the plug or should i try and relive the fuel injector?

My car has 208454 miles.
My car has an automatic transmission.

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