Notices

Version 6 STI Running Rich Serious Over Fuelling

Thread Tools
 
Search this Thread
 
Old 29 December 2013, 11:34 PM
  #1  
jdm2000sti
Scooby Regular
Thread Starter
 
jdm2000sti's Avatar
 
Join Date: Apr 2011
Location: Sligo, Ireland
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts
Default Version 6 STI Running Rich Serious Over Fuelling

Hi Guys,
My V6 is running super rich, barely idles and pops and bangs. And throws fuel out the exhaust.
The car had been left up idle for a few months but drove perfect.. until I locked the diffs for traction on the snow and ice at which point it started to run rough. Practically impossible to start at times.

I know the MAF sensor are a weak point on these models but wondering if there is anyway of testing these prior to purchasing one?

I slaved in the original ECU with same result as the Apexi PFC.
i have checked the resistance on the Lambda sensor and thats ok.
Threw a set of known good leads and coil pack with nil fix.

The hand controller says that the ignition timing is a 21-23 degrees on cranking...what should it be?
Air Flow voltage is 1050 mV static with ignition on and 1270 mV on cranking...what should it be?
02 sensor shows 0.02V static and at cranking.

Any help would be much appreciated. Thank you in advance.
Old 29 December 2013, 11:51 PM
  #2  
scooblet
Scooby Regular
Support Scoobynet!
iTrader: (5)
 
scooblet's Avatar
 
Join Date: Jun 2011
Location: SOMERSET SCOOBYS
Posts: 1,175
Likes: 0
Received 0 Likes on 0 Posts
Default

Could be lambda.
Old 30 December 2013, 12:02 AM
  #3  
adam405sti
Scooby Regular
iTrader: (14)
 
adam405sti's Avatar
 
Join Date: Jan 2011
Posts: 554
Likes: 0
Received 0 Likes on 0 Posts
Default

Sounds like your maf sensor.
Old 31 December 2013, 03:00 PM
  #4  
jdm2000sti
Scooby Regular
Thread Starter
 
jdm2000sti's Avatar
 
Join Date: Apr 2011
Location: Sligo, Ireland
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts
Default

None of the above. Injectors show I'm at 49.7% at idle...any ideas please?
The car runs but is poring fuel out of the exhaust. My next concern is I want to avoid washing the cylinder bores and fuel oil contamination. Anyone else have this problem.
Thanks for the replies.
Old 31 December 2013, 03:13 PM
  #5  
madscoob
Scooby Regular
iTrader: (3)
 
madscoob's Avatar
 
Join Date: Jul 2008
Location: u cant touch this
Posts: 3,084
Likes: 0
Received 2 Likes on 1 Post
Default

injector stuck. is the answer,to your problems. test the voltages at each connector first, i ha the same problem it turned out to be passanger side closest to car
Old 31 December 2013, 03:16 PM
  #6  
jdm2000sti
Scooby Regular
Thread Starter
 
jdm2000sti's Avatar
 
Join Date: Apr 2011
Location: Sligo, Ireland
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts
Default

Thank you. Do you know the voltages I should be seeing. How did you fix yours? Replaced injector, wiring or cleaning. Thanks again
Old 31 December 2013, 05:23 PM
  #7  
madscoob
Scooby Regular
iTrader: (3)
 
madscoob's Avatar
 
Join Date: Jul 2008
Location: u cant touch this
Posts: 3,084
Likes: 0
Received 2 Likes on 1 Post
Default

the voltages can be found on jgm's website under classic help, i just changed mine, having said that i did wonder at the time if it was the injector orings
Old 02 January 2014, 11:15 PM
  #8  
jdm2000sti
Scooby Regular
Thread Starter
 
jdm2000sti's Avatar
 
Join Date: Apr 2011
Location: Sligo, Ireland
Posts: 48
Likes: 0
Received 0 Likes on 0 Posts
Default

Cheers for the info. Fault confirmed to be injector. Thanks
Old 02 January 2014, 11:26 PM
  #9  
madscoob
Scooby Regular
iTrader: (3)
 
madscoob's Avatar
 
Join Date: Jul 2008
Location: u cant touch this
Posts: 3,084
Likes: 0
Received 2 Likes on 1 Post
Default

no probs glad to be of help make sure you change the oil, with that much fuel running through her you will of mixed it for sure, easy way to test is see if the oil smells of petrol, mine did and caught fire with just a cig lighter

Last edited by madscoob; 02 January 2014 at 11:33 PM.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ossett2k2
Engine Management and ECU Remapping
15
23 September 2015 09:11 AM
scottydouk
General Technical
2
10 September 2015 11:10 PM
peter zippy reid
ScoobyNet General
8
10 September 2015 04:30 PM



Quick Reply: Version 6 STI Running Rich Serious Over Fuelling



All times are GMT +1. The time now is 07:41 AM.