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P0301 Diagnostic Trouble Code Discussion for March 2014

Cylinder 1 Misfire Detected

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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2003 Honda Element EX 2.4L Misfire VIN: 5J6YH28513
P0301: Cylinder 1 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
2003 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 2HGES25743
P0301: Cylinder 1 Misfire Detected. car had a reoccurring p0301 misfire code, we installed new plugs and swapped coils and we still get the misfire code, though when you drive it you never feel it skip, also smoked the intake system and fund no vac leaks. So i unplugged the egr and test drove ou...
March 04, 2014
2003 Jeep Grand Cherokee Laredo 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GW48S63
P0301: Cylinder 1 Misfire Detected. This Jeep came in with a bad miss. My customer has already replaced the spark plugs-coil rail-crank sensor & ran sea foam through the intake.I thought it might have bad injectors so I replaced #1 & #6 injectors. I checked compression & it is ok.I u...
March 07, 2014
2003 Chevrolet S10 LS 4.3L Misfire, MIL Lamp on VIN: 1GCDT13X53
P0301: Cylinder 1 Misfire Detected. this vehicle sets missfire code while driving on cyl #1 from accelerating from stop.(65-70 mph). normal cruising speed no miss occurs? please help! this truck is killing us; it needs to go. Thanks everyone; Larry
March 14, 2014
2002 Nissan Altima S 2.5L Misfire VIN: 1N4AL11E32
P0301: Cylinder 1 Misfire Detected. Hello, this altima came here with a rough run misfire number 1 cylinder. removed number 1 spark plug to find the electrodes were touching like something had impacted... re-gapped retested ok. vehicle seems to be running fine, has anyone ran into this before? M...
March 17, 2014
2003 Acura MDX Touring 3.5L Misfire, MIL Lamp on VIN: 2HNYD189X3
P0301: Cylinder 1 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