Kombi backfiring help

Discussion in 'Engine & Transmission' started by jimma, Dec 18, 2017.

  1. jimma

    jimma Member

    Messages:
    109
    Location:
    VIC
    Hi I was driving home yesterday and my car started backfiring really bad on deceleration, I opened up the back and had a look and found this wire loose. It has an inline fuse and looks to go back to the front of the car, does anyone know what this is for and am I correct in assuming it goes back onto the negative of the coil.

    Thanks for the help
    James
     

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  2. grumble

    grumble Active Member

    Messages:
    900
    Location:
    Taree
    Is there a bakelite fuse carrier in the wire? If so it comes from the coil + it will be for the reverse lights, the switch is on the front of the transmission.
     
  3. jimma

    jimma Member

    Messages:
    109
    Location:
    VIC
    Yes there is thanks for that, doesn't explain the backfiring but I suppose people will know when I'm reversing.
     
  4. Barry

    Barry Well-Known Member

    Messages:
    2,449
    Location:
    Abbotsford NSW
    I would be looking for a leak in the exhaust.
    Get yourself a tennis ball and bounce it while your kombi idles away to operating temperature.
    Push the tennis ball over the exhaust pipe, hard, and your motor should stall.
    If it keeps running you are on your way to solving your problem.
     
    bagman and Grantus like this.
  5. splitbus

    splitbus Well-Known Member

    Messages:
    3,266
    Location:
    Brisbane
    Hopefully just a the copper gasket has blown, and not a pulled stud
     
  6. David H

    David H Well-Known Member

    Messages:
    2,995
    Location:
    newcastle
    Hi Jimma,
    Sounds like lean mixture & above advice is good to go 'chase'.

    Cheers
     
  7. bagman

    bagman Well-Known Member

    Messages:
    1,234
    Location:
    Hunter valley
    it was the bouncing of the tennis ball that got me in .... I suppose you could use a potato ..... but i suppose it would not likely bounce ay
     
  8. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    18,153
    Location:
    Bracken Ridge, Qld
    mmmmm potato up the exhaust ...... someones misspent youth perhaps :rolleyes::eek:
     
    oldman likes this.
  9. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    18,153
    Location:
    Bracken Ridge, Qld
    Jakes, backfire could be (as previously mentioned) that an exhaust gasket has "blown" ...... not sure on the engine you have but visual inspection of the exhaust ports will reveal if this is the case - you would notice a black carbon deposit or mark.
     
  10. 1500king

    1500king Well-Known Member

    Messages:
    1,517
    Location:
    Adelaide, SA
    Check every hose below the carbs.. balance pipes and brake booster circuit. It's going into lean misfires.. then the unspent mixture is exploding in the exhaust.
     
  11. 1500king

    1500king Well-Known Member

    Messages:
    1,517
    Location:
    Adelaide, SA
    Look for bad hoses, rubber elbows and grommets/ hose leaks..
     
  12. lachie

    lachie Member

    Messages:
    162
    Location:
    terranora
    I think I had something similar from the high tension lead making contact with a plug lead.
     

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