Ignition Module

[DarkMatter]

Apologies to those who have seen this question on the TVRCC forums, but being impatient for more replies I'm asking here too...

Over the last few months I've experienced a few incidences when my '96 Griff 500 will not start from cold because there is no spark (fuel pump primes and starter motor spins ok). Disconnecting/reconnecting the LT wires around the coil sometimes enables it to start. I've been advised to fit a new ignition module but before I do I'd like to understand more about them so my questions are...

1/ What does an ignition module do?
2/ How does it do it?
3/ Can they develop an intermittent fault or do they usually exhibit total failure?
4/ Could it be just dirty connections that cause the problem?

Thanks, Andrew.

[Ballistic Banana]

I had a problem with mine once, I Think from memory that they use the bracket screws as an earth and if the pathetic little screws holding to the plate work loose then it can cause an intermitent fault.I vagly remember seeing mine spark between the bracket and the amp. Also IIRC they cant really tested.

Edited to add found teh thread i had about it that may help clicky


BB

Edited by Ballistic Banana on Friday 23 March 21:40

[DarkMatter]

Thanks BB. I'll check the mountings as well as the connections.
Andrew.

[DarkMatter]

Today I removed the ignition module and cleaned the connectors and earth.

I noticed one wire, a blue one, on which the insulation was split. This wire was on a connector containing blue, red, and black (earth) wires. It appears as though the insulation damage was caused by the wire rubbing on a bracket on the fuel rail, so it is possible that an intermittent short occured.

I've re-assembled the module, and ensured that there are no shorts so it remains to be seen if the problem reoccurs.