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P0304 Diagnostic Trouble Code Discussion for January 2017

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2009 Honda Pilot EX 3.5L Misfire VIN: 5FNYF48499
P0304: 4 miss. I,m getting these missfire codes for cylinders 4,5,6. Adusted valves. map sensor voltage .94 to .96 warm.Checked timing belt twice. 19 in vacuum hot.Tried swapping coils and injectors.Cannot see a missfire on the scan tool only history missfires.Checked for in...
January 03, 2017
2004 Kia Sorento EX 3.5L Misfire, MIL Lamp on VIN: KNDJD73344
P0304: Cylinder 4 Misfire Detected. cruising between 60 and 70 itll start misfiring on a cruise.if i accellerateor decel itll come right out of the miss,when it misses short term fuel trims both banks go insteantly to 0 and o2 sensors both banks also 0 out, timing belt was done a couple months a...
January 03, 2017
2006 Cadillac STS 3.6L Misfire VIN: 1G6DW67706
P0304: Cylinder 4 Misfire Detected. Misfires at above 4500 rpm on bank 2 hard accel until shift point. Changed plugs/coils/plenum gasket. Cat not plugged. O2 sensors swapped. Intake cleaning and oil flushed. B1 stft on accel goes positive b2 stft goes solid negative 20. Exhaust and intake cams a...
January 10, 2017
2005 Acura MDX Touring 3.5L No Start, Misfire VIN: 2HNYD18815
P0304: Cylinder 4 Misfire Detected. Hello Acura/honda techs: I have this MDX, 2005 , came in on the hook , no start.Read DTC memomry and two misfires, cyl 4 and 5. Upon inspection found cyl 5 coil blown and shattered out with spark plug. Cyl 4 plug was loose. I checked the threads in no.5 cyl an...
January 11, 2017
2002 Ford Ranger Edge 3.0L Misfire VIN: 1FTYR44V32
P0304: Cylinder 4 Misfire. Full Disclosure: Before putting on the cylinder head (and before running the cylinder leak down test), I pulled out the parts cannon and installed a new injector on cylinder #4. This was after doing a signature test on the spark plug wire and finding a perf...
January 19, 2017
2001 BMW 330i 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: WBAAV53481
P0304: misfire4. oky guys got this bmw in and 2 others places looked at it and replaced crankcase vent valve and all hoses i looked at it smoked the intake found intake runner leaking around the roand seal well it was ripped used sealer just to seal it up cleared codes reset a...
January 27, 2017
2013 Subaru Impreza WRX STI 2.5L Misfire VIN: JF1GV8J60D
P0304: testing and results. Hello everyone, this is my own car, just got it a month ago. the car ran great for couple weeks. This car is in perfect condition all around. It has develop a short misfire starting at the beginning of the turbo kicking in, around 3k rpm, Then okay until 5000 ...
January 27, 2017
2013 Audi Q5 Premium Plus 2.0L Misfire VIN: WA1LFAFP1D
P0304: cyl. Help! im getting F'd by an Audi. This vehicle came in with misfire codes across the board, along with Evap incorrect flow code. Customer was driving from Florida back to New jersey when the light came on and the engine was misfiring. Upon my inspection i found...
January 28, 2017
2013 Audi Q5 Premium Plus 2.0L Misfire VIN: WA1LFAFP1D
P0304: cyl. Help! im getting F'd by an Audi. This vehicle came in with misfire codes across the board, along with Evap incorrect flow code. Customer was driving from Florida back to New jersey when the light came on and the engine was misfiring. Upon my inspection i found...
January 30, 2017