What is your question?
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What is your question?
I have been chasing the P0305 code....... #5 cylinder misfire....... I have replaced....plugs, plug wires and coil. I have chased all vacuum leaks I could find. I have cleaned the air system and i think, the injectors. I can reset the computor and the engine seems to idle fine. However...... when I take the car out on the highway and accelerate to 3600 then deccelerate to a stop... the check engine light comes on and the idle gets rough!..... car does not smoke,or burn oil and the #5 plug looks normal but with more deposits than the others! I need help!...... any ideas?
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Back to basics! Check compression on all cylinders. there should be no more that a 10% difference in all cylinders. Also, a cracked valve seat or bad valve, may indicate good compression during a test, but when the engine is running at operating temperature, may leak sufficiently for the Crank Position Sensor to detect a misfire.