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Cold start issues acts like a blown frps

Discussion in 'Engine/Tuning' started by mobywoods, Dec 7, 2018 at 11:04 PM.

  1. mobywoods

    mobywoods New Member

    Messages:
    3
    Joined:
    Sep 7, 2015
    Location:
    philly
    Just changed a bunch of things.
    2.3 vmp, fore budget return with 255 pumps fc3 controller wired for full-time, DW 78 lb fuel injectors, SCT 2600 mass air, Mac long tube headers x pipe no cats,
    So i got my start up tune start car a/f pegs at 10, starts blowing black smoke misfiring won't stay running I was thinking that the tune was just too rich at startup didn't worry too much considering I had a dyno appt. Change the plugs all 8 black. Tr6 at 32. Got to the tuners spend about an hour just to get it to idle got it to idle continued with a tune. Brought it home two weeks later drove it for the first time started doing it again. Change the iac the TPS sensor. Still nothing. Dataloging tomorrow anything i should look at or just let the tuner look over the data. If i hold throttle at 2100 rpm for about 10 sec it will idle but rough. Thought it was a basic Swap and tune. Thanks
     
  2. slo984now

    slo984now AKA 01yellerCobra Established Member

    Messages:
    13,486
    Joined:
    Oct 5, 2005
    Location:
    San Diego
    So once it warms up it's fine? Or it idles rough no matter what the engine temp is?
     
  3. mobywoods

    mobywoods New Member

    Messages:
    3
    Joined:
    Sep 7, 2015
    Location:
    philly
    When warm its ok. Little rough cause all the plugs are fouled.
     
  4. slo984now

    slo984now AKA 01yellerCobra Established Member

    Messages:
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    Joined:
    Oct 5, 2005
    Location:
    San Diego
    My guess would be your tune still needs work then.
     

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