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Thread: TB42 won’t start

  1. #11
    Patrol God mudnut's Avatar
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    I think @Avo is getting at that the timing chain has stretched or jumped a cog.

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  3. #12
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    I suppose is is possible Mudnut. I disconnected the fuel feed for the Carby and she almost ran until the fuel left in the Carby ran out so I am suspected it is a flooding issue. So back out with the Carby again. Mind you, I will check the timing as Avo suggests as well. Thanks

  4. #13
    Patrol God mudnut's Avatar
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    Check the needle and seat. I've had a bit muck stick in the seat, which allowed the fuel to pump in and flood the engine. Also squirt a smidge of engine oil in the spark plug hole of each cylinder and crank it over with the plugs out. (make sure you ground the coil lead). This is because the petrol will have washed the oil off the cylinder walls and lowered compression, adding friction for the starter to overcome. As I wrote, only a few drops of oil, so it coats the cylinder wall as you don't want to hydraulic lock the piston and bend a rod.
    Last edited by mudnut; 31st July 2020 at 01:27 PM.

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    Lightwork (31st July 2020)

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    I checked the timing as suggested and that’s all good. I also took the Carby apart, checked the float and needle etc. She still won’t start.

    So, I am back to checking through everything yet again. My understanding of the Petronix Ignitor is that it either works or it doesn’t, is that correct or can there be middle ground in its condition?

    I ask because it is the only component in the electrical system which has not been replaced. The spark from the coil to the distributor looks strong and blue, whilst the spark from the distributor seems like it could be a little better. Starting to clutch at straws now!

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    Avo (2nd August 2020)

  8. #15
    Patrol God mudnut's Avatar
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    Did you try spraying a bit of "Start ya Bastard', down the carby, without the fuel pump on?

    Where are you? Is there anyone you can swap components with, to trouble shoot?

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    Yes, I did try that, it sounded like it was going to start and managed a few revolutions but that was about it.

  10. #17
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    G’day LW Mate!
    When you mention it tried to start was that without assistance from the starter motor mate?
    In theory, if spark is goodish, you should be able to keep her running for at least a little short safe while via carefully metered spray can hopefully.
    Otherwise, back to Avo Mate and Mudnut whom runs similar I believe as his daily beast


    Sent from my iPhone using Tapatalk

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    Yes thats right MB, she would sound like she wants to go, I would release the starter and then she would manage another couple of revolutions on her own before dying again. The revolutions are a struggle, quite slow.

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