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79 Coil / Dist. Replacement Recommendations

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Old Jan 29, 2013 | 01:25 PM
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Default 79 Coil / Dist. Replacement Recommendations

I suspect there is trouble (intermittent starting) in my stock Accel HEI coil and / or the distributor / rotor. Any recommendations on replacements?
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Old Jan 30, 2013 | 01:17 PM
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You dont want to diagnose what the real problem is, just replace everything? You havent even looked for a bad connection in the harness going to the distributor?
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Old Jan 30, 2013 | 03:17 PM
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I disassembled and inspected the entire coil, distributor, cap, pickup coil, sending unit, mechanical / vacuum advance and all connectors and wires. Bench tested everything. All OK.

Re-assembled to continue testing, but the engine started!!! Drove it to work and home the next day, ran perfect.

The next morning the engine would not start, again. Not even a cough of combustion. The tach indicated RPM while cranking, so it is getting the timing pulses from the pickup coil / sending unit.

I think the distributor cap and rotor are probably the problem, they are the moving parts that wear out. I have a request in to Accel for the resistance readings I should have on the coil, no word from them yet.
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Old Jan 30, 2013 | 03:42 PM
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Accel coils are not 'stock', offer no performance upgrade over GM parts are more expensive and reputedly less reliable.

Aside from that, they're great.
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Old Jan 30, 2013 | 04:03 PM
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the resistance readings are located with the part description, i assumed you have a 140005, if not look up the correct one

http://www.summitracing.com/parts/acc-140005
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Old Jan 30, 2013 | 04:15 PM
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I would check and or replace the distributor control module. I had mine work intermittently years ago-Would run fine and then not start on the next start cycle. Replaced the module and everything has been fine-20 years!
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