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Old 08-19-2010, 03:50 AM   #1
Su||y
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Join Date: Jan 2008
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Location: Phoenix, Az
Vehicle:
2007 WRX Wagon
Stage Catless

Default My EJ255 popped tonight

Well here's the scoop, I was making a spirited canyon run on the connector from decker to mulholland. Anyways, I stomped on it on the apex of sharp right hander and instantly felt studdering/ a massive power loss. All the lights when off on the dash and the car started stumbling. I knew it was fudged the second I let off the pedal and my heart sank. Pulled over soon after and the car still idled, but it was idling rough and the car was shaking pretty good. The motor doesn't squeak or make any banging noises, but rather sounds like it's running on 3 cylinders. No oil leaking underneath or under the hood. Does anyone have any ideas? Cracked piston?


BTW - Car is running a VF39 on 20 pounds with a spearco tmic if that makes any difference...
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Last edited by Su||y; 08-19-2010 at 10:54 AM.
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Old 08-19-2010, 03:53 AM   #2
stibowen
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WRB

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Front mount? Check your intercooler couplings. Blowing one of the couplings will do pretty much everything you just said.
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Old 08-19-2010, 10:58 AM   #3
Su||y
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Spearco tmic, I checked all the couplings and I know it's not a boost leak. Something is seriously wrong with the motor. I'm going to take a video of it idling..
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Old 08-19-2010, 11:11 AM   #4
DSM_Outback
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93 Swapped L
Green

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Compression and leakdown test.
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Old 08-19-2010, 12:29 PM   #5
Zackbo
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By your description, you have a pretty serious electrical problem. I would focus my attention there. You wouldn't temporarily lose your dash lights, even on a catastrophic engine failure.
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Old 08-19-2010, 12:31 PM   #6
RicersWetDream
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I think he means all the lights "went off" aka limp mode.
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Old 08-19-2010, 12:43 PM   #7
DJTWRX
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Your description is similar to what I experienced when I lost a piston in my 2006 WRX. The fact that you have an 07 WRX makes this a more likely cause.

You'll need a compression test and a leak down test to confirm.
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Old 08-19-2010, 12:56 PM   #8
sense of nature
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Is this a built motor?'
If not you should post in the appropriate section ,you might get more help.
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Old 08-19-2010, 01:22 PM   #9
AQ Motorsports
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Check all the connectors i.e. coil packs, cams/crank/avcs etc. Could be something came loose.
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Old 08-19-2010, 06:14 PM   #10
domestic_abuser
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use this sad opportunity to do head work and at least drop in pistons lol.
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Old 09-03-2010, 10:00 AM   #11
STiGuy23
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Quote:
Originally Posted by DSM_Outback View Post
Compression and leakdown test.
this ^^^^^

this will tell you the jist of it if nothing is noticably undone, leaking, or broke under the hood.
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Old 09-04-2010, 01:04 AM   #12
NSFW
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ATP 3076, 6MT, AVO FMIC

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Check the ODB2 codes first, it'll cost you nothing and might point to something simple, if you're lucky.
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Old 09-06-2010, 08:47 PM   #13
maloz129
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same exact thing happend to my car a while ago, i was thinking the same thing that i blew my motor..turns out that my cylinder 4 coilpack wire came lose..fixed it and everything went back to normal..id look at the coils
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Old 09-07-2010, 05:54 AM   #14
Hey_its_Cole
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Silver

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Same thing happened to my car and it was just loose coil pack. Your description sounds exactly like how mine was when it came loose.
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