Notices
General Technical
Sponsored by:
Sponsored by: CARiD

Miss fire

Thread Tools
 
Search this Thread
 
Old 21 April 2016 | 08:41 PM
  #1  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default Miss fire

Lads just last week found a 1993 import wrx that had been dry stored for 11 years non runner but not a drop of rust .I got her started with a new tank of fuel and fuel filter changed all the fluids plugs coil packs put a wide band sensor and boost gauge in change all the vacuum lines went to give it a test drive as it idled fine Then disaster she miss fires like a crack head with an ak 47. First thoughts we're check the timing done this and it is on point am not sure we're to go next Tried her with and without maf cleaned throttle body and idle control Would it be worth a compression test b4 I check the injectors/ecu she idles fine if you tap throttle hard she revs fine holds boost but if you slowly apply throttle she pops and spits ?? ? ? Pluss the starter and alternator failed the 3rd time I started her
Old 21 April 2016 | 08:44 PM
  #2  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default Electrical fault???

Could this be an electrical fault as she has only done 70 k with proof
Old 21 April 2016 | 08:46 PM
  #3  
madscoob's Avatar
madscoob
Scooby Regular
iTrader: (3)
 
Joined: Jul 2008
Posts: 3,084
Likes: 2
From: u cant touch this
Default

check for post maf air leeks
Old 23 April 2016 | 09:07 AM
  #4  
jody0702's Avatar
jody0702
Scooby Regular
 
Joined: Apr 2008
Posts: 82
Likes: 0
From: Devon
Default

I'd take the coilpacks out and check those if they weren't new ones u put in. Those old coilpacks are always breaking down.
Old 23 April 2016 | 09:09 AM
  #5  
jody0702's Avatar
jody0702
Scooby Regular
 
Joined: Apr 2008
Posts: 82
Likes: 0
From: Devon
Default

Also, if you've changed the vacuum lines u might have whipped out the one with the restrictor pill in it, worth a check
Old 23 April 2016 | 09:14 AM
  #6  
JDM_Stig's Avatar
JDM_Stig
Scooby Regular
iTrader: (3)
 
Joined: Feb 2009
Posts: 5,860
Likes: 42
From: Mount Weather
Default

Coil packs . . .
Old 23 April 2016 | 10:56 AM
  #7  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default

I put new coil packs on and new plugs. Removing the pill wouldn't cause a miss fire surly when I get home today I will remove the plugs and check I Havant cracked one I will let you know if I have any luck today
Old 23 April 2016 | 07:55 PM
  #8  
mickywrx's Avatar
mickywrx
Unmapped 12.4s @ 105
iTrader: (29)
 
Joined: Apr 2005
Posts: 11,777
Likes: 4
From: Newcastle. 330bhp-289lb/ft @ 1bar boost - 12.4s @ 105mph
Post

New, or new to you coilpacks?

Check to make sure they are actually seated right on the plugs.
Old 23 April 2016 | 07:56 PM
  #9  
mickywrx's Avatar
mickywrx
Unmapped 12.4s @ 105
iTrader: (29)
 
Joined: Apr 2005
Posts: 11,777
Likes: 4
From: Newcastle. 330bhp-289lb/ft @ 1bar boost - 12.4s @ 105mph
Post

What plugs did you fit, and has the car got a decat exhaust?
Old 23 April 2016 | 09:45 PM
  #10  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default




Does this look correct I took off the crank pulley today and and lined up the cams but not Sure if the crank is correct





Bad pic





Spot on





Spot on
Old 23 April 2016 | 09:49 PM
  #11  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default

I found a broken wire for cylinder 4 coil pack after tracing it into the loom but don't want to go any further untill I put the new cam belt pulleys ect on i should get it done tomorrow if the rain stays away. I used brand new coil packs. And cheap 30 pound plugs as spent 160 on packs lol

Last edited by Classic wrx 1993; 23 April 2016 at 09:50 PM.
Old 23 April 2016 | 09:50 PM
  #12  
madscoob's Avatar
madscoob
Scooby Regular
iTrader: (3)
 
Joined: Jul 2008
Posts: 3,084
Likes: 2
From: u cant touch this
Default

from that photo the crank looks 2 teeth out clockwise
Old 23 April 2016 | 10:02 PM
  #13  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default

So that arrow should face the vertical mark? There is a notch to the left of that witch Is lined up with the red mark some one has left ?
Old 23 April 2016 | 10:11 PM
  #14  
madscoob's Avatar
madscoob
Scooby Regular
iTrader: (3)
 
Joined: Jul 2008
Posts: 3,084
Likes: 2
From: u cant touch this
Default

yep and the red paint/loctite is also on the idler, could it be just finger marks, but i still recon its 2 teeth out, cams are spot on
Old 23 April 2016 | 10:25 PM
  #15  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default




Just gone throw 100 photos I think the arrow should be 3 o'clock ? Or is the different for my ej20.
Old 23 April 2016 | 11:00 PM
  #16  
johnlogie's Avatar
johnlogie
Scooby Regular
iTrader: (4)
 
Joined: Oct 2008
Posts: 1,089
Likes: 1
From: Glasgow
Default

The arrow is NOT a timing mark. The pulley looks ok to me. The pulley should have a painted mark on it that is a timing mark
Old 23 April 2016 | 11:05 PM
  #17  
johnlogie's Avatar
johnlogie
Scooby Regular
iTrader: (4)
 
Joined: Oct 2008
Posts: 1,089
Likes: 1
From: Glasgow
Default

Originally Posted by Classic wrx 1993



Just gone throw 100 photos I think the arrow should be 3 o'clock ? Or is the different for my ej20.
Looks like you might be right.
Look at the last post on this page
http://subarudriver.com/phpBB3/viewt...28765&start=20
Old 24 April 2016 | 06:12 PM
  #18  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default

Right new cam belt ect fitted cheers john. put all the front mount inter cooler pipes on started a right treat sounded perfect then turned her off after a 30 second run just to triple check all looked good went to fire up again but now she just turns over FFs will it ever end lol. I took out the crank sensor and noticed a dent in the bottom am sure this is my problem. I can only find ones that have a plug on the sensor it's self mine goes all the way to the throttle body b4 you can unplug it any ideas were I can get a new one ?
Old 24 April 2016 | 06:15 PM
  #19  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default

Old 24 April 2016 | 06:17 PM
  #20  
Classic wrx 1993's Avatar
Classic wrx 1993
Thread Starter
Scooby Newbie
 
Joined: Apr 2016
Posts: 18
Likes: 0
From: Luton
Default

Also I need an alternator. I removed ac pump and pipes today saving weight gaining room what should I do with the connectors ?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
McGoo
General Technical
4
04 April 2016 06:52 PM
Tj121184
ScoobyNet General
15
02 April 2016 09:49 PM
G-3
General Technical
8
01 April 2016 08:53 AM
Scoob99
ScoobyNet General
11
31 March 2016 01:11 AM
Dale Smith
General Technical
4
26 March 2016 11:02 PM




All times are GMT +1. The time now is 09:21 AM.