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Old 03-06-2010, 05:31 PM   #1
Boxer4h
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Default Wrx misfire on all cylinders and more...

I have a 02 wrx and im having cel codes pop up only after the car is warmed up and i sit at a stop light for 10 seconds or more and then get going... I throw cylinder misfire on 1 or more cylinders.. It has a slight low/rough idle and slight hesitation... If I let the car sit for a couple minutes idling it will throw misfires on all cylinders.. I pulled out the intercooler and there quite a bit of oil in it... The turbo has slight shaft play... The oil starts to appear from where the pcv pipe runs into the intake.. I replaced the pcv valve and it helped some... Im guessing it might be a bad turbo seal, but would that cause a misfire on all four cylinders? Please help.. Id hate to buy parts that I dont need..
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Old 03-06-2010, 05:40 PM   #2
JoTech Performance
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Have you changed your spark plugs lately? Bad spark plugs or coil packs can cause misfires.
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Old 03-06-2010, 06:01 PM   #3
Boxer4h
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Yea just did a tune up in january... new plugs and fuel filter...
Aftermarket parts
TBE
Headers
Stock up pipe
Aps intake
Perrin charge pipe
Accessport stage 2
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Old 03-06-2010, 06:07 PM   #4
Boxer4h
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No i havent fully tuned it yet was going to do it on thursday at ams but not after all these misfires have been happening.. I havent had a misfire ever since last week.. Ive had all the parts on the car for about 8 months...Now its every time I drive...

Update on aftermarket parts...
TBE
Headers
Stock up pipe
Aps intake
Perrin charge pipe
Act streetlite flywheel
Exedy Stage 2 clutch
Perrin LCP
Accessport stage 2
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Old 03-07-2010, 01:59 AM   #5
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Do a compression/leakdown test to rule out valves. Sounds suspiciously similar to what my 03 was doing before I burnt a valve. Or it could be the flywheel, I've heard that even the ACT is a bit too light.
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Old 03-07-2010, 11:19 AM   #6
Boxer4h
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Yea i read up on that to... that it might throw a misfire code... but i had it installed over 8 months ago and never had a cel code for a misfire until a week ago.. Now its everytime I drive the car to work.. which is 4 miles away.. im goin try the compression test and see what that brings up... if not the only thing that i can think is wrong with it is the turbo spittin oil into the engine...
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Old 03-07-2010, 08:45 PM   #7
quazimoto
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Old 03-08-2010, 09:25 AM   #8
subie.cora
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That is some good common sens info. Like the whole spark plug gaping, that is a hug factor if you think about it.
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Old 03-08-2010, 09:34 AM   #9
quazimoto
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Also if the valve clearances are too tight I belive you will start to get missfires. The bugeyes ECU's were plagued with misfire sensitivity. There were like 6 ECU revisions for the 02.
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Old 03-08-2010, 10:20 AM   #10
subie.cora
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What do you mean by 6 ECU revisions, share your info.
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Old 03-08-2010, 12:07 PM   #11
quazimoto
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Think of it as updating firmware for a device. Obviously if there were problems or better setting were found then a company comes up with an "update". The AF426 was the last revision for the 02 WRX.

http://www.scoobypedia.co.uk/index.p...ilityList#toc2
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Old 03-11-2010, 04:13 PM   #12
Boxer4h
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So bad news.... Cylinder 2 is bad.. Anyone know a good place to get a 2.0 ej20 that will work with my 2002 wrx? I found a few, but anyone know a dependable dealer? or place to buy a motor...
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Old 03-11-2010, 04:30 PM   #13
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Bummer. I had a bad valve on mine, and had it rebuilt at RAW Performance www.raw1performance.com but I think there's a shop in Chicago, P&L maybe?
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Old 03-11-2010, 04:39 PM   #14
Big_DeWeY
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Quote:
Originally Posted by Boxer4h View Post
So bad news.... Cylinder 2 is bad.. Anyone know a good place to get a 2.0 ej20 that will work with my 2002 wrx? I found a few, but anyone know a dependable dealer? or place to buy a motor...
DS1. Dylan is a solid guy and will be more than happy to help you out.
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Old 03-12-2010, 03:47 AM   #15
eurospek
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Quote:
Originally Posted by Big_DeWeY View Post
DS1. Dylan is a solid guy and will be more than happy to help you out.
+1111 for Dylan & DS1
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