|
|
|
|
Thread Tools | Display Modes |
10-24-2009, 09:09 AM | #1 |
Scooby Newbie
Member#: 224375
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: Around the corner...
Vehicle:02 WRX Wagon Silver |
LongTerm Misfire issue, Any help?
So, the last 8 months or so Ive been dealing with this damn misfire. My car will randomly throw up a P0304 code, but seems to shake at idle everyday. So when this all started, about 8 months ago, I changed plugs, coils, and #4 Injector. Anyways, It was fine for a while but has recently been acting up again in the past couple of months. The CEL will come on every 500 miles or so, but it will still 'rumble/ shake' at idle. Last night, while I was driving home, I felt it shaking more then usual. I figured the CEL would come on, and it did, but this time it started flashing. I scanned it again this morning and its Cyl 4 Misfire AGAIN.
:bang: Any ideas on what to do? I was thinking about changing the plugs and #4 injector again and if that doesn't do it, I was thinking the valve gap if off and I might need a new spacer. :help:
* Registered users of the site do not see these ads.
|
10-24-2009, 09:46 AM | #2 |
Scooby Specialist
Member#: 102808
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: Long Island
Vehicle:1995 Built EJ207 6sp 30r ***break in*** |
mileage on your car?
any mods and are you tuned? |
10-24-2009, 10:06 AM | #3 |
Scooby Newbie
Member#: 224375
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: Around the corner...
Vehicle:02 WRX Wagon Silver |
|
10-24-2009, 10:19 AM | #4 |
Scooby Newbie
Member#: 148743
Join Date: May 2007
Location: Erie, PA
Vehicle:02 WRX & 99 RSTI Sedona |
I know you already said you changed your plugs and coil pack. I would swap plug, coil pack, and injectors with other bank. I problem still there you are down to cylinder(bearing problem). Maybe timing belt but not likely. My .02..
|
10-24-2009, 10:27 AM | #5 | |
Scooby Newbie
Member#: 224375
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: Around the corner...
Vehicle:02 WRX Wagon Silver |
Quote:
Would it be a bearing problem or just the valve shim is wrong? |
|
10-24-2009, 10:28 AM | #6 |
Scooby Newbie
Member#: 216064
Join Date: Jul 2009
Location: frederick,md
Vehicle:02 wrx wrb |
sounds like the next thing to do is a compression test on that cylinder since coil,plug,and injector have been replaced.
|
10-24-2009, 10:51 AM | #7 |
Scooby Newbie
Member#: 224375
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: Around the corner...
Vehicle:02 WRX Wagon Silver |
|
10-25-2009, 04:01 AM | #8 |
Scooby Newbie
Member#: 196674
Join Date: Dec 2008
Location: Bucharest, Romania
|
lighter flywheel and pulley could cause that too, especially at iddle.
|
10-26-2009, 08:19 AM | #9 |
Scooby Newbie
Member#: 224375
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: Around the corner...
Vehicle:02 WRX Wagon Silver |
|
10-26-2009, 08:20 AM | #10 |
Scooby Newbie
Member#: 224375
Join Date: Sep 2009
Chapter/Region:
MWSOC
Location: Around the corner...
Vehicle:02 WRX Wagon Silver |
Did a compression test, everything checked out fine..
|
10-26-2009, 06:02 PM | #11 |
Scooby Newbie
Member#: 216064
Join Date: Jul 2009
Location: frederick,md
Vehicle:02 wrx wrb |
how much psi? did pressure build up slow or fast?
|
10-26-2009, 06:23 PM | #12 |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
clogged/bad injector
|
10-26-2009, 08:40 PM | #13 |
Scooby Specialist
Member#: 200526
Join Date: Jan 2009
Chapter/Region:
SWIC
Location: Queen Creek
|
valve shims
|
10-26-2009, 11:01 PM | #14 |
Scooby Newbie
Member#: 111046
Join Date: Mar 2006
Chapter/Region:
SWIC
Location: las vegas
Vehicle:1996 STiL wagon 2002 MBP bugeye |
i had this problem a while back on my bugeye @ about 130k miles. the code started popping up after i went to a vf39 with pink injectors, since the injectors and plugs were new, i ended up replacing the o2 sensor and i haven't thrown a misfire code since...
i ended up changing the o2 sensor by following the diagnostic procedure in the oem subaru service manual for 02-03 wrx. |
10-26-2009, 11:15 PM | #15 |
Scooby Specialist
Member#: 183634
Join Date: Jul 2008
Chapter/Region:
RMIC
Location: At the "B"
Vehicle:02 wrx/ 92 ss Booze fueled :) |
Could try the grounding mod, worth a shot to even out your sensors... Being as it costs only 20 bucks it's worth a shot
|
10-26-2009, 11:40 PM | #16 |
*** Banned ***
Member#: 16200
Join Date: Mar 2002
Vehicle:OK buy Nates beans westcoastroasting.com |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
boost issue.. any help? | chandla04 | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 2 | 01-23-2010 09:01 PM |
Having some misfire issues and need some guru help.... | Electric-Mayhem | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 18 | 11-12-2007 03:01 PM |
couple issues, any help? steering, brakes, differential maybe? | skakid619 | Brakes, Steering & Suspension | 0 | 10-02-2007 01:00 AM |
Issues. Any help? Lost Power | HorsePowerForBrains | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 3 | 09-29-2004 02:11 PM |
Smogging Issues, Any help? | Mfinaldi | Southern California Impreza Club Forum -- SCIC | 4 | 12-03-2003 02:01 PM |