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P0304 Diagnostic Trouble Code Discussion for February 2010

Cylinder 4 Misfire Detected


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Trouble Ticket Help Requests for DTC P0304
Help Request Posted
2007 Hyundai Entourage SE 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: KNDMC23387
P0304: Cylinder 4 Misfire Detected. have never worked on this model has anyone seen these codes? i checked engine data and bank 2 desired retard was 0 and actual retard was 50 this engine has a timing chain so before i dig in i wanted to see what ya'll had to say about it.thank you
February 01, 2010
2002 Land Rover Range Rover HSE 4.6L No Start, Misfire, MIL Lamp on VIN: SALPM16492
P0304: Misfire Cyl. 4. This vehicle came in yesterday, it has a very faint miss, the customer said that the MIL has been on for a week and the last shop that looked at it pulled the same codes I did. I would suggest a tune up except for the fact that wice it has not started for the ...
February 03, 2010
2005 Volkswagen Jetta 2.5 2.5L Misfire, MIL Lamp on VIN: 3VWSF71K15
P0304: cyl 4 misfire. Vehicle misfires. Scoped injector and coils-ok. Scoped maf sensor-ok. LTFT -3.5%. Sprayed with gum cutter. No vacuum leaks. Excessive vacuum from filler cap and dipstick tube. Replace vc for possible torn crankcase ventilation diaphram. No change in the way th...
February 04, 2010
2001 Honda CR-V SE 2.0L MIL Lamp on VIN: JHLRD186X1
P0304: Cylinder 4 Misfire Detected. Greetings Honda Techs, I have a real head scratcher with this CR-V, It came in with the check engine light flashing, I pulled codes for miss fires in cylinders #2&#4, only problem is that this car is not miss firing. It has a very even smooth idle. So I ga...
February 05, 2010
1997 Subaru Legacy GT 2.5L Poor Idle Quality, Hesitation, Misfire VIN: 4S3BD6754V
P0304: Cylinder 4 Misfire Detected. this subaru has a rough idle and hesitates going around corners. all cylinders seem to be working at idle but i did get a cylinder misfire code for number 4. there is a loud tapping sound that sounds like it is coming from the driver side bank. tried new plug ...
February 05, 2010
2003 Kia Sorento LX 3.5L Misfire VIN: KNDJD73303
P0304: Cylinder 4 Misfire Detected. ... power and service engine light on. Checked for codes,found 3 as follows. p0700,p0304,p0204. Mitchell advises to repair inj codes first. Went through p0204 flow chart and found wiring to be in good condition so went with inje...
February 08, 2010
1998 Mercury Grand Marquis LS 4.6L Surge, Cuts out, Stall, Misfire VIN: 2FAFP74W3W
P0304: 4 cyi. misfire. This vehicle was brought in for a simple problem, it sputters and misfires after about 2 min. after start-up until it warms up. I have replaced spark plugs,boots and MAF sensor. The MAF sensor baro reading was 151hz. and according to my hotline it should be 15...
February 16, 2010
2001 Mercury Cougar V6 2.5L MIL Lamp on VIN: 1ZWFT61L61
P0304: cyl. 4 misfire. Vehicle came in with no running complaint just check engine light and three misfire codes. I drove vehicle and right away on light throttle cruise with a slight grade light starts flashing. Car runs smooth the whole time even while the light is flashing has lo...
February 16, 2010
2004 Jaguar XJR 4.2L Excessive knocking VIN: SAJWA73B74
P0304: Misfire 4. Vehicle has a very loud knocking noise only under acceleration (heavy acceleration). It sounds like detonation (the "marbles in cylinder" sound), but it is very pronounced. So much so we initially thought it was a mechanical problem. We put "ears&...
February 17, 2010
1998 Mercury Grand Marquis LS 4.6L Surge, Cuts out, Stall, Misfire VIN: 2FAFP74W3W
P0304: 4 cyi. misfire. This vehicle was brought in for a simple problem, it sputters and misfires after about 2 min. after start-up until it warms up. I have replaced spark plugs,boots and MAF sensor. The MAF sensor baro reading was 151hz. and according to my hotline it should be 15...
February 17, 2010
1996 Honda Civic LX 1.6L Excessive Emissions, Surge, Stall, Misfire, MIL Lamp on VIN: 2HGEJ6670W
P0304: misfire 4. here is a tough one. I have a honda civic here that the customer put a long block in himself which he said only came with the head and block so he used his original intake and exhaust. he drove it for 5 days and he says it was driving ok at first and then it ...
February 24, 2010
2002 Audi A4 Quattro 3.0L Misfire, MIL Lamp on VIN: WAULT68E72
P0304: Misfire Cyl 4. Hello Audi specialists. This Audi is driving me insane. I'm running out of ideas and I need your help. This car will set misfire codes for the left bank only. Usually for cylinders #4 & 6, sometimes cylinder #5 too. The coils have been replaced by the deal...
February 26, 2010
2004 Audi A4 3.0L Hesitation, Misfire, MIL Lamp on VIN: WAULT68E44
P0304: misfire cyl 4. looking for some help with this audi lack of power misfireing onn bank2 intake manifold runner was stuck vacuum actuators inop., replaced intake driver unit cleared all codes misfire codes and lack of power come right back. found compression higher on bank 2 t...
February 26, 2010