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re Art B's comment below: I had an intermittent no-start (with no spark) on 1990 that's been in the barn ~ 1 year waiting for me to get around to it. Previous owner had increasingly-frequent no-starts - waiting and/or jiggling wires and it would usually start.
I replaced the CPS (insulation broken) and power stage with used ones; and I cleaned up the 25-Amp fuse unit. It started consistently all Spring & Summer to be moved around.
This AM, with the coil wire adjacent to the intake manifold, no spark when cranking but sometimes a single spark when the key was turned on. After reading through this thread, I bypassed the 25-Amp fuse. Started right up.
On closer inspection, the wire feeding the 25-Amp fuse was corroded and broken inside the insulation where it connects to the battery clamp. Cut it back ~2" and replaced the connector.
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Art "Right. You'll have spark with the fuel injection (not only pump) relay in your pocket. But it does require the 25A fuse under the hood (its wiring) to be in good shape. Sometimes invisible corrosion will not be found by unloaded meter checks and never by continuity checks."
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240 drivers / parts cars - JH, Ohio
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