All,
Can any body here please tell how can we test the ignition coil primary circuit, if its working or not.
problem is unable to start the car, it takes self but there is no current in the lead coming out (secondary circuit) from coil to distributor. This happens rarely. but i am unable to diagnose what is the root cause.
Road side mechanics are able to start the car by fiddling with the wiring (probably making a direct contact from battery to coil) but they themselves have no clue what they do to make it start.
Things already tested and tried.
- have changed/ checked the coil lead.
- have checked when ever this happens the coil gets current (12v) from battery when the switch is in ON position.
- There is no current in the coil secondary coil when i crank the engine.
- coil seems to be in good health, once it get started it runs like a charm not a single missing what so ever.
- Not sure how to check the pulse circuit ( from distributor) how can i check if the distributor is generating the required pulse or not ?
- The most annoying thing is this behavior occurs rarely, and leaves back no symptoms to trace it.
My personal opinion is that there could be some fault with coil primary circuit, but i am not sure how to test the circuit completely.
Any help in this regard will be highly appreciated.
Thanks.