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Bomber electrics problem
K2-K6:
If you've an "amp clamp" try a measurement of feed pre and post solenoid to at least see what you've got there.
Also try it off the engine (the starter motor) to see if there's significant drop as you'd expect.
Would give good comparison too, if you rebuild it.
A double check though .... pull plugs and turn engine over to see if there's significant resistance there that may be causing it. Unlikely, but not completely out of the question. Was helping someone recently with a starter motor "problem" which had been replaced, only then to let all the smoke out of the new one ;D ultimately he'd got a significant problem with crankshaft much to our consternation.
royhall:
At the risk of looking stupid, what's an amp clamp?
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K2-K6:
One of those multi meters that have something of a "lobster claw" sticking out the front, that to open and then close around the lead .... then it measures load going through that cable while you operate the circuit.
Essentially reading resistance load on that circuit while it's fully cranked up.
royhall:
I think I have that attachment on my meter, never used it. Will have a look.
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K2-K6:
I hadn't previously used in automotive diagnostic.
Recently someone showed me on a suspect failed fuel pump (located inside diesel tank) by jumping across the pump relay loom contacts, so the pump line was permanently on, then checking with clamp on that jumper wire to see load through that supply point. It should have been drawing 4.7 ohm but was at 12.7 ohm and had in fact partially siezed to such extent it wasn't pumping much at all. Certainly a good illustration.
Relevant info clip but on ac volts in this case https://youtu.be/z-KfZvbjyBY?si=vyNvatTYpJx9RwZ3 which may be of use.
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