|
|
|
|
Thread Tools | Display Modes |
06-27-2002, 07:36 PM | #1 |
Scooby Specialist
Member#: 12223
Join Date: Nov 2001
Chapter/Region:
MAIC
Location: Pittsburgh Pa
Vehicle:2005 WRX |
If you blew pistons or rings in a wrx....
What cylinders would go first? I have these constant misfires at iddle 3rd and forth cylinders only. I dont feel it misfire and dont see any smoke while I drive but somthing must be up. I just got back from getting my car tunned all went well I made 254whp. It is not the unichip we tested that and switched the harnes. This was doing this prior to the tune but it started a 9000 miles and know I have 11000. I thought it might be the unichip but I guess I am wrong. We also put new plugs in and it started happining after that but about not at first. If I put the ac on it gets worse. What the h%@@ is going on.
* Registered users of the site do not see these ads.
|
06-27-2002, 07:52 PM | #2 |
Scooby Specialist
Member#: 3792
Join Date: Jan 2001
Vehicle:2002 6MT almost GDB |
Um,
Try swapping the ingnition coils from the 2 good cylinders. If you if your rings were bad, YOU WOULD BE BURNING OIL AND SMOKING!. Usually rings and pistons are catastrophic failures. You have either an electrical, or electronic problem. It is possible that you coils could have gotten fried. How do the plugs look in the bad cylinders? Are they wet and dark, or clean and golden brown? Don't panic just yet man! It ain't over until it is over! Probably the coil, of maybe wiring...something that is recoverable...I am pretty sure of that! Good luck! Andy |
06-27-2002, 07:54 PM | #3 |
Scooby Specialist
Member#: 3792
Join Date: Jan 2001
Vehicle:2002 6MT almost GDB |
Also, are you running cold plugs? What heat range are you at on the plugs?
How about your plug gap? Try opening up the gap a shade on the bad cylinders...this will allow it to get a better spard at idle. Once again...good luck! Andy |
06-27-2002, 08:04 PM | #4 |
Scooby Specialist
Member#: 12223
Join Date: Nov 2001
Chapter/Region:
MAIC
Location: Pittsburgh Pa
Vehicle:2005 WRX |
one stage colder with a gap at .025-.028. I have bigger injecters and the car has been tuned pretty good from the begining. Would a resister in the factory egt gauge cause such a thing? Just a thought.
|
06-27-2002, 08:58 PM | #5 |
Scooby Specialist
Member#: 1257
Join Date: Apr 2000
Location: In the Valley.....Somewhere...
Vehicle:2000 GC8 WRX 93 RS-W Wagon (White) RIP |
If you are worried about a blown piston.........
DO A COMPRESSION TEST! It's easy and quick and will tell you if anything is mechanically wrong. My engine had bent valves and a cracked cam, so was running esentially only on one good piston.....and yes it ran, just REALLY rough, but it would not die. Plus I was getting misfire codes like crazy.....duh. I agree that it is probably a electrical issue. If the car is running fine, and there is no smoke coming out of the exhaust, then you probably have some bad coils. They are known to go bad. But reguardless of all this.....do a compression test and verify that your valves and pistons are good. Consider it in the least as peace of mind, then of anything else. Cheers EddyL. |
06-27-2002, 09:18 PM | #6 |
Scooby Newbie
Member#: 19340
Join Date: May 2002
Location: Melbourne Australia
Vehicle:94 Impreza WRX Red |
This is the first stage of a broken piston, revealed in cranking phase only, missed one compression,
the broken block is second stage where rod comes through the side http://homepage.mac.com/sjens/PhotoAlbum5.html PLAYER |
06-27-2002, 11:58 PM | #7 |
Scooby Specialist
Member#: 15917
Join Date: Mar 2002
Vehicle:2002 teh FastAR rex Black like my soul |
Your oil would be burning away if you screwed up your piston rings. It's most likely something very different.
|
06-28-2002, 02:14 AM | #8 |
*** Banned ***
Member#: 10889
Join Date: Oct 2001
Location: 3ast Sid3 Kr3w Prez.
Vehicle:Yup, 265whp 255tq Pink oWz JoO!! |
I take it you have a Unichip, the reason you have misfires codes coming up is because your timing is too aggressive under partial throttle and load. I had this same problem with my Unichip. It doesnt actually misfire it just makes the factory ECU think that. I had retuned my unichip for the partial throttle load areas and now no more codes
|
06-28-2002, 08:13 AM | #9 |
Scooby Specialist
Member#: 12223
Join Date: Nov 2001
Chapter/Region:
MAIC
Location: Pittsburgh Pa
Vehicle:2005 WRX |
It is only at iddle. I was at turboxs yesterday switched the chip and harness. It is still there.
|
10-15-2002, 09:59 AM | #10 | |
Scooby Guru
Member#: 6124
Join Date: Apr 2001
Chapter/Region:
MWSOC
Location: Glendale Hts, IL, USA
Vehicle:2000 NFR AP1 S2000 '07 Honda FIT sport (5MT) |
Quote:
Jorge (RiftsWRX) www.ProjectWRX.com |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
07 STI Blown Piston or Ring? | 07stilover | Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) | 49 | 01-25-2008 01:24 AM |
Basic rule...If you have to ask if YOU are gay or THIS is gay... | Neek | Off-Topic | 6 | 01-13-2007 12:22 PM |
Will you get a pre-nup if you get married or re-married? | Train Wreck | Off-Topic | 111 | 03-20-2006 09:24 PM |
If you were sleeping, someone broke into your house, and you blew a barn door in 'em? | DrDRum | Off-Topic | 12 | 05-03-2004 11:17 PM |
if you do go over 4000rpm in break in period... | wrxxtc | Newbies & FAQs | 22 | 02-16-2002 06:13 PM |