Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for September 2014

Cylinder 3 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2003 Hyundai Sonata GLS 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: KMHWF35H93
P0303: Cylinder 3 Misfire Detected. This car had same symptoms a year ago. All cylinders indicate misfire. Car was returned this year but while codes were present, motor ran well, reset MIL status and after a few days the problem reoccurred, vehicle was returned but still runs fine. Are EVAP val...
September 03, 2014
2003 Hyundai Sonata GLS 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: KMHWF35H93
P0303: Cylinder 3 Misfire Detected. This car had same symptoms a year ago. All cylinders indicate misfire. Car was returned this year but while codes were present, motor ran well, reset MIL status and after a few days the problem reoccurred, vehicle was returned but still runs fine. Are EVAP val...
September 04, 2014
2002 Volkswagen Passat GLX 2.8L Poor Idle Quality, Misfire VIN: WVWRH63B72
P0303: Cyl 3 missfire. Hello everyone I have a 2002 VW Passat, 2.8 V6 ATQ engine. Odd Issue, I am a VW veteran and this one has me stumped. Vehicle has new bank 1 and 2 cam adjusters, timing is dead on, used cam bar and lock pin to time engine along with the proper procedure. at Idl...
September 11, 2014
2009 Audi A3 Quattro 2.0L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out VIN: WAUKF78P89
Car towed in with engine light, edc light and smoke and fuel from tailpipe - checked low side fuel pressure ok - pulled spark plugs #3 fuel soaked - check injector ohms 1.7 for all four - It looks obvious as a bad #3 injector, but feel I might be missing somet...
September 16, 2014
2005 Subaru Forester XT 2.5L Misfire, MIL Lamp on VIN: JF1SG696X5
P0303: Cylinder 3 Misfire Detected. Hello everyone, I have a subaru that started off as a hard start and a mil setting the misfires on the primary bank. Well first I found the fuel pressure leaking into the #3 intake runner. Made the estimate and installed the regulator and a fresh set of plugs....
September 21, 2014
2005 Subaru Forester XT 2.5L Misfire, MIL Lamp on VIN: JF1SG696X5
P0303: Cylinder 3 Misfire Detected. Hello everyone, I have a subaru that started off as a hard start and a mil setting the misfires on the primary bank. Well first I found the fuel pressure leaking into the #3 intake runner. Made the estimate and installed the regulator and a fresh set of plugs....
September 25, 2014