Riddle me this!!
Old Hutcho - June 8th, 2013 at 02:58 PM
Folks
Today I went to start my bug. No spark. New coil, new plugs, breakerless ignition module.
Test light from earth to + on coil. Light! Complete circuit. Test light from earth to - on coil. Light! Complete circuit. Still no spark.
After a bit of stuffing about I put the test light from earth to - again. No light! Incomplete circuit. Spark! Ignition! Engine purrs.
Its a bloody mystery to me. I dont understand white mans magic. What about you?
regards
Old Hutcho
68AutoBug - June 8th, 2013 at 03:19 PM
You just fixed a really perplexing problem Hutcho...
don't knock it... lol
loose wire... or connection.. even just bumping a wire or connector can do it.. lol
My Son doesn't understand how a loose/dirty connector can cause problems even though its connected.. lol
Best of luck in the future
Lee
SuperOwen - June 8th, 2013 at 03:22 PM
Sounds like a dicky module. The module needs to ground the coil to pass current (charge it) then open circuit it to collapse the field and make the
spark. Did the engine roll over at all between getting the light to come on and off? Carry a spare set of points...
68AutoBug - June 8th, 2013 at 03:28 PM
| Quote: |
Originally
posted by SuperOwen
Sounds like a dicky module. The module needs to ground the coil to pass current (charge it) then open circuit it to collapse the field and make the
spark. Did the engine roll over at all between getting the light to come on and off? Carry a spare set of points...
|
yes, the distributor may have been just on the edge of the magnetic contact in the module..??
You can buy cheap PLAZMEX modules for $45 now so they are a cheap spare.. not like the other very expensive modules..
carrying points and condensor usually makes them work... lol
cheers
LEE
Uber Kafer - June 10th, 2013 at 02:25 PM
| Quote: |
Originally
posted by Old Hutcho
Test light from earth to - on coil. Light! Complete circuit.
|
to clarify, at that step you had a complete circuit through the coil, but not the distributor, so the circuit from the coil to the distributor was
'open', OR, the electronic points were 'open'. Next time you tested they were closed.
But most likely, as Lee pointed out, you probably had a loose connection. So that might be a loose wire in a crimp lug, or a loose lug on the spade
terminal, or a dirty spade terminal. Have a close look with a torch, and give all connections (and wires) a pull. It will come back and bite you if
you dont fix it.