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Another bit of no sparky-warky malarky Wed Sep 08, 2021 6:01 pm
Dai
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Annnddd... considering I'm supposed to know what I'm doing with motorcycle electrics, you can all laugh.
That includes you, Stu.
Search-fu has failed me because I could have sworn I've seen this in here somewhere.
Symptoms:
- fuel pump does not run-on when the starter is pressed. It stops immediately the button is released
- LED test on the fuel injectors: LED flashes once when the starter is pressed and once when it is released. No flash while engine cranky-wa...
- of course, no spark at the plugs
What's been checked:
- been through Bert's troubleshooting and nothing turned up bad. Couldn't do the engine running tests of course
- the wiring loom but that doesn't rule it out because I built it (this is no.5 K100 loom)
- ICU has been swapped
- FICU has been swapped
- both cross-tested okay on LFB
- HES have been swapped out for three different ones, which doesn't mean I haven't buggered them all because I haven't cross-checked by putting one on LFB. I know: I should but...
- engine turns over fine
- fuel pump runs while the button is held down
- everything that is not part of the ignition subloom works okay.
What I'm about to do:
- fit one of the HES plates to LFB to make sure I haven't blown them
- junk the ignition subloom and make another one
- fill in the hole where I kept banging my head against the workbench
- buy up all the stocks of painkillers in the village.
This is the RT, not the RS, for all the difference that should make.
That includes you, Stu.
Search-fu has failed me because I could have sworn I've seen this in here somewhere.
Symptoms:
- fuel pump does not run-on when the starter is pressed. It stops immediately the button is released
- LED test on the fuel injectors: LED flashes once when the starter is pressed and once when it is released. No flash while engine cranky-wa...
- of course, no spark at the plugs
What's been checked:
- been through Bert's troubleshooting and nothing turned up bad. Couldn't do the engine running tests of course
- the wiring loom but that doesn't rule it out because I built it (this is no.5 K100 loom)
- ICU has been swapped
- FICU has been swapped
- both cross-tested okay on LFB
- HES have been swapped out for three different ones, which doesn't mean I haven't buggered them all because I haven't cross-checked by putting one on LFB. I know: I should but...
- engine turns over fine
- fuel pump runs while the button is held down
- everything that is not part of the ignition subloom works okay.
What I'm about to do:
- fit one of the HES plates to LFB to make sure I haven't blown them
- junk the ignition subloom and make another one
- fill in the hole where I kept banging my head against the workbench
- buy up all the stocks of painkillers in the village.
This is the RT, not the RS, for all the difference that should make.
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1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
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1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500