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1977 Bay 2lt twin carb stalling

Discussion in 'Engine & Transmission' started by Kombi hippy 53, Apr 27, 2019.

  1. Kombi hippy 53

    Kombi hippy 53 Member

    Messages:
    51
    Location:
    Roseville
    1977 2 lt Bay stalling help
    My Bay window Kombi 2 L twin carb just started stalling when idling if I keep the revs up it’s fine but as soon as it goes to Idle it just stalls has ‘s been running perfectly starting first go from Cold even after a week, just started this today any hints would be great you appreciated .
     
  2. galp

    galp Member

    Messages:
    94
    Location:
    ulverstone
    Does it have rubber elbows at the carby base, check these first for sucking of air as they may be perished or cracked and can be blown off by an engine backfire?
    Aerostart can also be sprayed around suspect areas to find a vacuum leak as the engine speed will increase when it sucks the aerostart in
    Best of luck
     
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  3. Mr Beckstar

    Mr Beckstar Well-Known Member

    Messages:
    1,154
    Location:
    Bateau Bay, NSW
    Wow never thought about the backfire situation. Good point! And I had a backfire in the carby only a few days ago when my points died so I had better check my rubber elbows are still on properly.
     
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  4. tintop

    tintop Well-Known Member

    Messages:
    986
    Location:
    Canberra
    very likely some dirt in one or both of your idling circuits or a non working solenoid
    • with the ignition on but engine not running, push and pull the wire on the cutoff solenoids on and off and listen for a click to show they are working.
    • if they are working, unscrew the cutoff solenoids and blow through the hole you took them out of (a vacuum hose is good for this)
    • also check there isn't any gunk in the solenoid itself
    • you can also unscrew the mixture screws and blow through there (and check the o-ring is okay) - but if you can leave them alone it's better or you'll have to tune it again
     
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  5. Kombi hippy 53

    Kombi hippy 53 Member

    Messages:
    51
    Location:
    Roseville
     
  6. Kombi hippy 53

    Kombi hippy 53 Member

    Messages:
    51
    Location:
    Roseville
    Thank you all for all the help I think it may be a blocked idle jet but I don’t have the expertise to check any of this however it is booked in to Andrew Dodd to have an oil change next week where I’ll get him to check everything still driveable have to keep the revs up .
     
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  7. Kombi hippy 53

    Kombi hippy 53 Member

    Messages:
    51
    Location:
    Roseville
    its Backfiring a bit too
     
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  8. tintop

    tintop Well-Known Member

    Messages:
    986
    Location:
    Canberra
    if it is a blocked idle jet it will backfire a bit on deceleration
     
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  9. Kombi hippy 53

    Kombi hippy 53 Member

    Messages:
    51
    Location:
    Roseville
    Good to know thank you
     
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  10. cbus

    cbus Well-Known Member

    Messages:
    13,519
    Location:
    sunshine coast
    Plus points can wear quickly and click se up giving same symptoms.
    Check gap and timing .
    If you have a multimeter with dwell setting this is easy.
     
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