1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

2G Misfire in boost

Posted by Blinkyblinx9, Mar 10, 2020

Please Support Morrison Fabrications
Please Support Feal Suspension
  1. Blinkyblinx9

    Blinkyblinx9 Probationary Member

    27
    6
    Joined Jan 22, 2019
    Clinton, Iowa
    I have had this issue for about half a year now but have just recently started trying to fix it. I originally dealt with it by just turning boost down. About a month ago I tested the wires and the #1 wire was about 3700 with the #4 reading at over 8000. Today I received a new set of NGKs and it helped SO much. I finally got to crank it back up to 13-14PSI with a spike at about 15. Its fine so long as I'm easy getting into it at higher RPMs to keep the spike low but the popping is still far better than it was. After my first drive and a 20min cool down i checked the coils. Both read 1.0/17000 primary/secondary. After an hour cool they where still kinda sorta warm (yes that is a technical term) and read .9/14000. Finally after a 3 hour cool down on a 45 degree evening they where cold and read .9/12700. I have 2 questions, at what temperature is the resistance read and is this much variation based on temperature abnormal? My manual says .7 to .86/11700 to 56000 primary/secondary but says nothing about temperature. I'm skeptical to believe this because it also says 3000 to 22000 on the wires for the 4g63t.
     
    Last edited: Mar 11, 2020

    227  1

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM
    Loading...
  2. Kryndon

    Kryndon Proven Member

    431
    252
    Joined Jan 10, 2014
    Bulgaria, Europe
    I know you're talking about spark plug wires, but you didn't mention your plugs themselves? What brand and model are they? Have you made sure you've got the right spark plug gap for the boost and compression you're running? You might be having spark blow out during high boost.
     

    Street Build 3K  12

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
    Loading...
  3. Blinkyblinx9

    Blinkyblinx9 Probationary Member

    27
    6
    Joined Jan 22, 2019
    Clinton, Iowa
    Sorry, they where replaced about 3 months ago. It had NGK platinums when I bought it andni replaced them with NGK coppers at somewhere between .028 and .030. Im quite positive at this point that it is blowout I'm just going through one part at a time to figure out why. I should also add that the wires not only helped with this but they solved a warm idle issue I had. My main concern in this post was with these coils. Idk anything about their design and there seems to be so little information outside of just resistance specs online.
     

    227  1

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM
    Loading...
  4. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    5,205
    2,536
    Joined Nov 14, 2013
    Independence, Kansas
    The coils on a 4g motor are pretty stout units and deliver very good voltage. I would neck the plug gap down to .020-.025 also. I run high boost and my plugs are gapped at .018. It is an easy thing to try.
     

    Street Build 4K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    1K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    695  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 967  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
  5. Blinkyblinx9

    Blinkyblinx9 Probationary Member

    27
    6
    Joined Jan 22, 2019
    Clinton, Iowa
    I went ahead amd closed the plug gap to .025 and I'm not sure if it helped. If it did it wasn't obvious. I still had 2 misses out of 3 pulls up in the 15psi spike. Not bad but the problem persists. I'm still really curious if the coils are any good but dont want to drop 70 to replace them for nothing.
     

    227  1

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM
    Loading...
  6. Mello

    Mello Proven Member

    1,056
    301
    Joined Jul 4, 2003
    Albuquerque, New Mexico
    Close the gap more. I ended up at .022 on 91 pump @ 15psi.
     
  7. rabenne

    rabenne Proven Member

    1,268
    439
    Joined Apr 21, 2006
    Racine, Wisconsin
    Dude, @Mello that cat is a MONSTER!
     

    255  7

    2008 Lancer Evolution MR
    awd · automatic · Lancer Evolution

    Street Build 8K  16

    1995 Eagle Talon TSi
    awd · manual · 2G DSM

    Street Build 451  5

    1996 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM
    Loading...
    1990TSIAWDTALON likes this.
  8. Blinkyblinx9

    Blinkyblinx9 Probationary Member

    27
    6
    Joined Jan 22, 2019
    Clinton, Iowa
    Wow, okay. Will try before I leave work in the morning. I never thought that gaping down that far was normal for 3 lb over stock.
     

    227  1

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM
    Loading...
  9. Mello

    Mello Proven Member

    1,056
    301
    Joined Jul 4, 2003
    Albuquerque, New Mexico
    @rabenne he's the boss. Supervises everything I do but he's not to keen with the test drives.
     
    rabenne and 1990TSIAWDTALON like this.
  10. Blinkyblinx9

    Blinkyblinx9 Probationary Member

    27
    6
    Joined Jan 22, 2019
    Clinton, Iowa
    Well gaping down to .022-.023 seems to have fixed it with no side effects to idle. Is that really normal for so little boost though? I was originally worried that my coils may have been popping out on me. I ended up running 162% load once that was resolved with 12pt of knock. Pulled 2° and added fuel (10.5 from 11.5) up top as a quick bandaid.she needs a lot of maintenance before I can go farther now. :'( Thanks you guys have been a huge help. I am however still worried about the coil questions in my main post though.
     

    227  1

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM
    Loading...
    1990TSIAWDTALON likes this.
  11. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    5,205
    2,536
    Joined Nov 14, 2013
    Independence, Kansas
    It seems pretty normal as we up boost we decrease plug gap. I run all 3 of my DSM's lower than book. The stocker is gapped around 22-25ish if I remember right. The other 2 are both at .018".
    Not sure what to say about the coils. Mine are all old and still puttin out the juice. Just hate for you to waste money if it isn't necessary.
     

    Street Build 4K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    1K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    695  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 967  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
  12. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    5,205
    2,536
    Joined Nov 14, 2013
    Independence, Kansas
    @Mello , I want to see a video if him taking a ride :p
     

    Street Build 4K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    1K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    695  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 967  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...
    rabenne and Mello like this.
  13. Mello

    Mello Proven Member

    1,056
    301
    Joined Jul 4, 2003
    Albuquerque, New Mexico
    I believe you said plugs are NGK coppers now & fairly new. I won't worry about the coils if things hold up and it doesn't start missing again anytime soon.
     
    Last edited: Mar 12, 2020
    1990TSIAWDTALON likes this.
  14. Mello

    Mello Proven Member

    1,056
    301
    Joined Jul 4, 2003
    Albuquerque, New Mexico
    @1990TSIAWDTALON Little off topic but we'll see. May be a handful & I should probably try to keep them on the steering wheel first.
     
  15. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

    5,205
    2,536
    Joined Nov 14, 2013
    Independence, Kansas
    I had a cat in my car ONCE.....I am imagining the video, and that's ok with me. ROFL
     

    Street Build 4K  29

    1992 Eagle Talon TSi AWD
    14.74 @ 117.04 · 1G DSM

    1K  14

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    695  18

    1967 Chevrolet Camaro RS
    rwd · automatic · Misc Vehicles

    Street Build 967  7

    1998 Eagle Talon TSi
    fwd · manual · 2G DSM

    Street Build 6K  13  25

    1990 Eagle Talon TSi AWD
    13.620 @ 108.460 · 1G DSM
    Loading...

Share This Page

Support Vendors who Support the DSM Community
ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RixRacing RockAuto SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory