Coil insulation

Discussion in 'Mech Tech' started by AndyC, Oct 5, 2017.

  1. Is the coil supposed to be insulated when fitted to the bus?

    Bought a new coil, fitted the four wires and went to fit it.

    I swear I can hear a spark type noise when it touches the case. Only very tiny though and not all the time.

    A bit reluctant to fit and start the bus with new coil!

    This is the coil.

    [​IMG]
     
  2. Nope. There’s nothing in the coil wiring that needs grounding, or is connected to the can. If yours is a used coil, it may be arcing internally, likely on the secondary (high voltage) side.

    PS Is that the right coil for your bus? Label implies it’s for an electronic ignition system.
     
    Last edited: Oct 6, 2017
  3. OK. Maybe it's my mind hearing a spark.

    It's brand new (and Bosch) so hoping nothing wrong with it.

    Yeh, correct coil for my 79 Cali bus with funky electronic distributor! :p
     
    snotty likes this.
  4. Fitted it.

    It starts.

    Panic over.

    I think the spark noise was a piece of paper rubbing on the engine seal foam. I really shouldn’t be allowed near these engines :lol:
     
    Valveandy, mcswiggs, art b and 4 others like this.
  5. Double post. Oooops
     
  6. :thumbsup:
     
  7. At least you stopped and asked rather than carrying on regardless and causing more problems

    Stopping having a brew and a smoke and giving something a good staring at has saved me loads of hassle and money over the years
     
    Valveandy, mgbman and Fat_Brum like this.
  8. I have been known to rush things previously and get things wrong. Oooops.

    I spent the last two weeks replacing my heat exchanger and exhaust. Just the odd few hours here and there. Definitely pays to take your time!
     
    snotty and paradox like this.
  9. Might be worth having a squint in your engine room at night to check for any arcing...
     
    paradox likes this.
  10. I once discovered my ht leads were arcing on a mini by spraying the leads with wd40
    I thought it was running poo from damp leads so sprayed them
    I banged my neck of the bonnet and burnt my eyebrows off.

    At least I found the fault
     
    Surfari, Flakey, philntfc and 2 others like this.
  11. Betty the Bay

    Betty the Bay Supporter

    [QUOTE="snotty, post: 1365618, member:

    PS Is that the right oil for your bus? Label implies it’s for an electronic ignition system.[/QUOTE]
    Thought the thread that should not be mentioned was rearing its head again!
     
  12. Thought the thread that should not be mentioned was rearing its head again![/QUOTE]

    I spotted that as well :eek:!
     
    Betty the Bay likes this.
  13. edited:
     
    Last edited: Nov 5, 2017
  14. It’ll be fine.
     
  15. Thought the thread that should not be mentioned was rearing its head again![/QUOTE]
    Is that like the Scottish play?
     
    Betty the Bay likes this.
  16. Is that like the Scottish play?[/QUOTE]

    We don’t mention the O word...
     

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