Go Back   Subaru Impreza Forum - WRX STI Rally Performance Tuning > Subaru Impreza General > Subaru Impreza Discussions

Subaru Impreza Forum

need help please
Reply
 
LinkBack Thread Tools Display Modes
Old 22 Jul 2008, 07:23 AM   #1 (permalink)
Fresh Scooby
 
Join Date: Jul 2008
Posts: 2
Angry need help please

i replaced the engine on my sti every thing works good untill i hit 5000 rpms then cylynder #3 miss fires subaru mechanics tried every thing and cant fix it please let me know what i should doo
Offline   Reply With Quote
Old 22 Jul 2008, 08:41 AM   #2 (permalink)
Veteran Scooby
 
Matt-WRX-Import's Avatar
 
Join Date: Mar 2008
Location: That bit in the middle
Posts: 3,577
Re: need help please

what year is your STI ?
I had an MY03 STI Type UK and I lost cylinder #2 completely. It took Subaru months to diagnose. It started out as a missfire but developed very quickly in to failure.
It turns out that it's a known fault with the 03 STI that at 80k miles the exhaust values crumble and you loose all compression. Have you had a compression test ?
__________________
Greed, for lack of a better word, is good. Greed is right. Greed works. Greed clarifies, cuts through, and captures the essence of the evolutionary spirit.
Offline   Reply With Quote
Old 22 Jul 2008, 03:51 PM   #3 (permalink)
Cool Scooby
 
Anders52's Avatar
 
Join Date: Oct 2007
Location: Edinburgh
Posts: 228
Send a message via MSN to Anders52
Re: need help please

Could well be a coil pack breaking down at high revs.
__________________
Liver is evil!!!!
Offline   Reply With Quote
Old 23 Jul 2008, 09:19 AM   #4 (permalink)
Super Moderator
Paid & Proud
 
2002pete's Avatar
 
Join Date: Sep 2004
Location: UK
Posts: 14,377
Re: need help please

Hi.

Quote:
Originally Posted by lubnani97 View Post
i replaced the engine on my sti every thing works good untill i hit 5000 rpms then cylynder #3 miss fires subaru mechanics tried every thing and cant fix it please let me know what i should doo
Could be .

1. Plug gaps.
2. Injector performance (one stuck open/not performing correctly)
3. Boost leak.
4. Air Intake
__________________
Pete.

Offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT. The time now is 01:58 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.