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P0303 Diagnostic Trouble Code Discussion for March 2014

Cylinder 3 Misfire Detected

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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2003 Honda Element EX 2.4L Misfire VIN: 5J6YH28513
P0303: Cylinder 3 Misfire Detected. Have this Element that is misfiring at idle. It runs great off idle. It is setting misfire codes for all of the cylinders. Have seen this before with tight exhaust valves, and they indeed were tight. Adjusted all of the intake and exhaust valves to the loose s...
March 03, 2014
2009 Volkswagen GTI 2.0L Misfire, MIL Lamp on
P0303: Misfire cylinder 3. ... fix oil leak. A week later, car came back with code P0302 & P2304. Changed 4 VW spark plugs and one VW coil. A day later, customer came back with a bunch of ignition codes (300, [...], 2304). The strange thing is when clear MIL and drive first cycle, t...
March 04, 2014
2007 Jeep Liberty Sport 3.7L Misfire
P0303: Cylinder 3 Misfire Detected. ... these and have replaced the head every time with great results. Came in for P0303. Would only happen at idle. Swapped coils, plus, injectors. Checked compression- #3 was 175(others were 180-185). Cylinder leakage was 40% coming out exhaust. Aftermarket war...
March 10, 2014
2003 Jeep Liberty Limited 3.7L MIL Lamp on, coolant loss VIN: 1J4GL58K63
P0303: Cylinder 3 Misfire Detected. This vehicle came in for a loss of coolant complaint. Customer stated that he has been adding coolant every couple of days, but never saw any on the ground. Pressure tested system and could not find any evidence of a leak. Checked for water in the oil, oil loo...
March 19, 2014
2003 Acura MDX Touring 3.5L Misfire, MIL Lamp on VIN: 2HNYD189X3
P0303: Cylinder 3 Misfire Detected. Engine misfires @ idle all 6 cylinders only cold, after 4-5 minutes, misfires are gone. STFT does not change drastically between cold & hot B11.1 B20.91,checked EGR command & lift 0%, we checked valve adjustment it had tight exhaust valve clearance cyl...
March 24, 2014