|
|
|
|
Thread Tools | Display Modes |
08-13-2009, 05:16 PM | #1 |
Scooby Newbie
Member#: 129554
Join Date: Oct 2006
Location: Orlando, FL
Vehicle:03 WRX WRB |
Still Misfiring on all cylinders?!
Posted a little while ago because I had just had my CELs read and they showed I was misfiring on all cylinders.
I went with the general consensus of NASIOC and I pulled all the plugs and replaced them. (They did look a bit fouled but not horrible) and went ahead and cleaned my MAF sensor. The CEL did not immediately reappear as I had to pull the battery to get to the last spark plug. So on my way to to Autozone the CEL came back on. I had the guy there read it and it was the same code. Misfires on all cylinders. However, as I go to leave my car dies. Turns out my battery is dead as well . The guy at autozone mentions that the dying battery may also be a cause of my misfires, or possibly my starter since I already changed out all the plugs and cleaned the MAF. Any truth behind any of this? Or should I start looking towards the timing belt? Thanks in advance for helping a guy out.
* Registered users of the site do not see these ads.
|
08-13-2009, 05:24 PM | #2 |
Scooby Specialist
Member#: 151045
Join Date: Jun 2007
Location: Pennsylvania
|
A dead battery may mean your alternator was not charging it properly. You'll need to get both tested. I have heard of bad alternators causing misfires, but it seems rare.
What are the mods on the car? Lightened flywheel? Anything like that? |
08-13-2009, 05:35 PM | #3 |
Scooby Newbie
Member#: 129554
Join Date: Oct 2006
Location: Orlando, FL
Vehicle:03 WRX WRB |
Well, i think the battery was about due. I believe it was the original battery.
I forgot to include mods, they were in my original post. 2003 WRX VF 43 STI TMIC STI Pinks Walbaro 255lph COBB SRI Up/Down Pipe HKS TBE Greedy Profec Boost Controller and PROTUNE. |
08-14-2009, 01:41 AM | #4 |
Scooby Newbie
Member#: 209963
Join Date: Apr 2009
|
spark plug wires are the first thing to try, then look to the engine grounding.
|
08-14-2009, 10:08 AM | #5 |
Scooby Guru
Member#: 70395
Join Date: Sep 2004
Chapter/Region:
MAIC
Location: Da-boonies,Va
|
Really? Show me spark plug wires on the coil-on-plug ignition system in the WRX.
OP- http://forums.nasioc.com/forums/show...43&postcount=7 And low voltage can cause missfire problems. Last edited by quazimoto; 08-14-2009 at 01:46 PM. |
08-14-2009, 10:39 AM | #6 |
Scooby Newbie
Member#: 17418
Join Date: Apr 2002
Chapter/Region:
RMIC
Location: Littleton, CO
Vehicle:2002 WRX 1968 Camaro SS/RS |
depending on your miles, you might want to change your fuel filter too
|
08-14-2009, 12:46 PM | #7 |
Scooby Newbie
Member#: 129554
Join Date: Oct 2006
Location: Orlando, FL
Vehicle:03 WRX WRB |
So should I have the starter looked at? This may be a stupid question but is the fuel filter the bag looking thing that is attached to the fuel pump?
|
08-14-2009, 01:41 PM | #8 |
Scooby Specialist
Member#: 152885
Join Date: Jul 2007
Chapter/Region:
MWSOC
Vehicle:2014 Malibu LTZ silver |
I agree with dumdum, get your alternator checked out. Low voltage can definately cause misfires.
|
08-14-2009, 01:50 PM | #9 |
Scooby Newbie
Member#: 174459
Join Date: Mar 2008
Chapter/Region:
South East
Location: VA... The Burg.
Vehicle:2015 STI DGM |
its the black cylinder at the top right corner of your engine bay with your fuel lines going to it. you can get them at auto zone or advanced for 20 bucks or so. (fuel lines---fuel filter---fuel rails) you will see it.
|
08-14-2009, 01:56 PM | #10 |
Scooby Newbie
Member#: 174459
Join Date: Mar 2008
Chapter/Region:
South East
Location: VA... The Burg.
Vehicle:2015 STI DGM |
did the mis fires just start all of a sudden or over time? look into your injectors...it would be very rare for all 4 spark plugs to foul at the same time and cause the misses. it has to be something that would affect all cylinders if it just started all of a sudden. like what everyone has been saying (starter, alternator, etc) it could be electrical. could be your fuel pump. fuel filter. fuel rails. injectors. haha even bad gas. people are having a lot of problems like this and the best thing you can do is check each one at a time. mine was missing on all 4.. turns out the 565cc injectors were not working correctly with the tune. when you rule out he little stuff then i would get the timing checked. goooood luck
|
08-14-2009, 02:56 PM | #11 |
Scooby Newbie
Member#: 129554
Join Date: Oct 2006
Location: Orlando, FL
Vehicle:03 WRX WRB |
How do I go about checking the injectors? Does this involve pulling them off completely? (Thank god i left the GBOD off...)
|
08-14-2009, 03:37 PM | #12 |
Scooby Newbie
Member#: 174459
Join Date: Mar 2008
Chapter/Region:
South East
Location: VA... The Burg.
Vehicle:2015 STI DGM |
well the most you could do would be send them to a shop to get them tested or you could take a chance and take them off give them a good cleaning and just check them out and stick them back on and see if there is a bit of a difference. i'm just not aware of any way to check them at home...
|
08-14-2009, 03:38 PM | #13 |
Scooby Specialist
Member#: 112612
Join Date: Apr 2006
Chapter/Region:
MWSOC
Location: Appleton,Wisconsin
Vehicle:2010 Legacy 2.5 CBS 2002 Impreza WRX WRB |
I'd check your valve clearance on all cylinders. With that list of mods I bet they're pretty tight by now.
|
08-15-2009, 01:33 PM | #14 |
Scooby Newbie
Member#: 129554
Join Date: Oct 2006
Location: Orlando, FL
Vehicle:03 WRX WRB |
Took the alternator to autozone and they said that thing was completely done for. Not looking to spend 205 for the OEM part, any recommendation on which way I should sway when purchasing a new one?
Hopefully this is the cause of my misfires? When I check the fuel filter, what am I looking for? |
08-15-2009, 01:58 PM | #15 | |
Scooby Specialist
Member#: 151045
Join Date: Jun 2007
Location: Pennsylvania
|
Quote:
|
|
08-15-2009, 02:46 PM | #16 |
Scooby Guru
Member#: 70395
Join Date: Sep 2004
Chapter/Region:
MAIC
Location: Da-boonies,Va
|
Pm me if you need a good used alt. I have one.
|
08-16-2009, 03:33 AM | #17 |
Scooby Newbie
Member#: 129554
Join Date: Oct 2006
Location: Orlando, FL
Vehicle:03 WRX WRB |
PMed you
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
CEL - misfire on all cylinders | Cannonbolt | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 15 | 12-29-2013 12:18 AM |
misfire on all cylinders | armandscbinwrex | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 23 | 03-28-2012 05:59 PM |
MisFire on ALL cylinders | crazycanasian | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 18 | 08-14-2009 02:54 PM |
Misfire On All Cylinders | scoobysti05 | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 4 | 08-17-2006 06:40 PM |
Misfiring on all cylinders? | Subaruski | Service & Maintenance | 10 | 07-05-2005 10:59 AM |