First: a Q for kawboy who wrote:
I would do some measuring across the pick up coil connector to ensure the voltage is getting across. It's only 8 volts at that point I believe and low amps. Just a trigger signal.
This somewhat puzzles me. Wondering if you can make a specific reference to "The Manual" regarding this. Can't find a spec. for the voltage you mention. As you mention:
Just a trigger signal.
I've always believed that the Ignition Triggers (Pick-up Coils) to be "Passive" ...... no measurable voltage. Or to put it another way.....no supplied "harness" voltage but simply a small signal induced to the winding's within the triggers by the rotating Lobe, that the Igniter then senses.
razmo: The inconsistencies being experienced have me believing that you have a "connection" problem. Not discounting an Ignition Module failure but thinking of simpler remedies first. Can only presume at this point that all the related ignition components are functional.
Kawboy pointed out a valid concern about corrosion, due to insulation being pierced. This is something you can check for while you do the following from a strictly Electrical point of view:
I'd start with a very close inspection of the Ignition Module plug! Check to make certain all of the terminals are fully inserted and "locked" into the terminal block. It will be obvious if one has "unlatched" and been pushed back by it's counterpart. This alone would explain the inconsistency you're explaining. None-the -less I'd remove each lead and inspect the wire to terminal crimp. It's possible a wire(s) could be corroded!
Before reinserting the terminal(s) into the block.....clean them and make certain the small locking tab stands proud. This tab must be raised to ensure that particular terminal can't be pushed back out when re-connecting the male and female block.
Whether a single "Bullet Connector" or a multi terminal block....cleanliness for a low resistance connection is critical. Tarnish and corrosion is a
So additionally, the same protocol applies to the 6 Ignition-Trigger connections and the ignition-coil connectors.
Terminal ends can appear clean but I've experienced poor continuity despite their appearance. Clean them to bare metal !
Male ends are easy ! Female ends, whether "Bullet" or "Blade", can be a bit more challenging. Simply use your creativity. For obvious reasons, don't use any type of metal cleaning solution !!!!! The short term gain will be soon lost when the corrosive solution that WILL wick up into the insulation, eventually "eats" the wire strands!
If this doesn't solve the problem then I'd focus on the individual ignition triggers and ignition coils. You may very well have a couple of "triggers" that are failing due to an "Open" in the winding's. Having two that are defective would be a coincidence but still possible. I've experienced two dropped cylinders due to one faulty trigger - similar to your explanation. I'd suggest removing the ignition triggers and do the following. Check each one for continuity per the specs. at room temp. If they check-out, put them in your freezer for half an hour. Check the continuity again. If they continue to "pass" then heat-up each one with a hair dryer (heat-gun if your careful - you want them hot-to-the-touch) and check them again. If they "pass" then you can logically consider them OK. Then do the same with the ignition-coils. If your issue is in fact an Electrical related problem then I think you may find the culprit, at this point.
hope this helps.