Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Lean miss fire on vs ss

Discussion in 'VR - VS Holden Commodore (1993 - 1997)' started by Alec_FELZY, Jan 17, 2020.

  1. Alec_FELZY

    Alec_FELZY New Member

    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Jan 17, 2020
    Location:
    Australia
    Members Ride:
    Vs ss s2
    Anyone ran into a problem when opening the throttle to much air is sucked in and engine wants to die also back firing through intake.

    Have checked timing in diagnostic mode and with a timing light.

    Have replaced tps sensor
     
  2. gossie

    gossie Well-Known Member

    Messages:
    1,674
    Likes Received:
    317
    Trophy Points:
    83
    Joined:
    Jun 7, 2011
    Location:
    Gold Coast.
    Members Ride:
    VE International 3.6L
    Do you have the original air cleaner on it?
     
  3. losh1971

    losh1971 Well-Known Member

    Messages:
    7,776
    Likes Received:
    2,459
    Trophy Points:
    113
    Joined:
    Jan 17, 2010
    Location:
    North Tas
    Members Ride:
    VR Ute V6
    That shouldn't affect it as you can run them without a filter and they shouldn't backfire or die. It's not like a carby where where you need to rejet when increasing airflow. OP needs to scan for codes before anything else.
     
    VS_Pete likes this.
  4. _R_J_K_

    _R_J_K_ Well-Known Member

    Messages:
    4,676
    Likes Received:
    484
    Trophy Points:
    83
    Joined:
    Dec 20, 2008
    Members Ride:
    Zenki S14
    What's the part number on the spark plugs?
     
  5. BlackVXGTS

    BlackVXGTS Well-Known Member

    Messages:
    3,579
    Likes Received:
    562
    Trophy Points:
    113
    Joined:
    Aug 14, 2004
    Location:
    Melbourne, SE
    Members Ride:
    GEN-F2 GTS A6, VS Clubsport 185 A4
    VS_Pete likes this.
  6. Alec_FELZY

    Alec_FELZY New Member

    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Jan 17, 2020
    Location:
    Australia
    Members Ride:
    Vs ss s2
    No don’t have original air filter
     
  7. Alec_FELZY

    Alec_FELZY New Member

    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    1
    Joined:
    Jan 17, 2020
    Location:
    Australia
    Members Ride:
    Vs ss s2
  8. gossie

    gossie Well-Known Member

    Messages:
    1,674
    Likes Received:
    317
    Trophy Points:
    83
    Joined:
    Jun 7, 2011
    Location:
    Gold Coast.
    Members Ride:
    VE International 3.6L
    I still feel it’s running lean because of original filter gone letting more air in so needs to be richer and or it’s retarded.
    Of course I’m talking old school that I know well, so up to you OP if you wish to address those things.
     
  9. BlackVXGTS

    BlackVXGTS Well-Known Member

    Messages:
    3,579
    Likes Received:
    562
    Trophy Points:
    113
    Joined:
    Aug 14, 2004
    Location:
    Melbourne, SE
    Members Ride:
    GEN-F2 GTS A6, VS Clubsport 185 A4
    Double check that you have the leads the correct way around on the distributor cap. The fastening clips should be between the 1/2 and 4/5 leads. The only time I've had a misfire on my V8s is when the leads were positioned incorrectly.

    V8 Distributor & Leads.jpg
     
  10. _R_J_K_

    _R_J_K_ Well-Known Member

    Messages:
    4,676
    Likes Received:
    484
    Trophy Points:
    83
    Joined:
    Dec 20, 2008
    Members Ride:
    Zenki S14
    Yeah, that's not how EFI works. The ECU will adjust based on MAF or MAP readings which are taken after the airbox. TBH even carby cars shouldn't have a noticeable rich issue without a filter, the filter shouldn't be a restriction to that extent.

    Also, 'not original' air filter could just mean he's running a standard Ryco or something (which almost everybody uses), doesn't actually mean he's not running a filter.
     
    Last edited: Jan 20, 2020
  11. gtrboyy

    gtrboyy Well-Known Member

    Messages:
    1,643
    Likes Received:
    466
    Trophy Points:
    83
    Joined:
    Jan 25, 2006
    Members Ride:
    vt ss & lc gtr
    If you haven't done anything to it before it happened could be vacuum leak or ignition issue...start checking
     

Share This Page