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Old 09-30-2004, 06:14 PM   #1
bigbird
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Member#: 1685
Join Date: Jun 2000
Location: NISSANTALK.COM / MD
Vehicle:
2001 2.5RS-T FMIC
WHITE

Have a Nice Day? P0303 & P0302 Codes, Misfire, Running on 2 Cylinders

Hey all, I got CEL on 2003 WRX.

Running on 2 cylinders, barely idling, dying under load.

Replaced plugs - no help.

Have not had time to check spark or fuel or anything like that.

Before I rip into it, you guys have any suggestions? Tips? Tricks? Methods?

Anyways, advice is apreciated.

Thank you

PS. Could a vacuum leak completely shut off 2 cylinders? Can the timing be completely off?
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Old 09-30-2004, 06:17 PM   #2
HonduHunter
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Member#: 28408
Join Date: Oct 2002
Chapter/Region: TXIC
Location: San Antonio, Tx
Vehicle:
2002 vf48ed WRX
PSM

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Old 10-01-2004, 12:25 PM   #3
zaxrex
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Member#: 9898
Join Date: Sep 2001
Chapter/Region: MAIC
Location: VA near MD
Vehicle:
2002 WRX
Water Injected Blue

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Well, I would try swapping the ignitors and plugs around to see if the missfires track to the other bank.
If it does, get new ignitors and plugs.
If it doesn't, get a firing indicator to see if the ignition wires are deliveringthe pulsed current.
If it doesn't then you will have to track down the wiring problem.-
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Old 10-01-2004, 12:28 PM   #4
bigbird
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Location: NISSANTALK.COM / MD
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2001 2.5RS-T FMIC
WHITE

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Got around to checking the spark on each cylinder - strong spark on every cylinder.
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Old 10-01-2004, 12:44 PM   #5
wcbjr
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Member#: 4001
Join Date: Feb 2001
Location: I love spherical bearings!
Vehicle:
2006 Legacy GT
Obsidian black

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Check the injectors. I am getting a misfire on cylinder 1. I think my injector o-ring has blown out, or in.
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