| Ignition system voltage drop [message #239586] |
Tue, 11 February 2014 18:16  |
gbarrow2
Messages: 765
Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
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1976 455
With the ignition switch "ON" I read 12+ volts on lead to the distributor when disconnected. When connected to distributor I read only +/- 6 volts.
Starter cranks normally but no start. My timing light will not fire while cranking so I assume 6volts is not enough to energize the coil.
The engine started easily and ran fine 2 weeks ago (with the same distributor) on the test stand for cam break in.
Engine is now re-installed in the Palm Beach. Ignition system worked fine before engine removal.
The coach has been sitting without the engine for several months and it seem that the electrical gremlins have infected it.
I metered my Eleganza distributor lead for comparison. There is only ~1/2 volt drop between connected vs disconnected readings.
I swapped the Eleganza cap, coil, and plug wires ( it was running fine 2 days ago) into the Palm Beach.
No joy. Still only~ 6 volts with leads connected.
So I assume the problem is upstream from the coil.
However, I changed the module because I had a spare. No change.
I traced the wire up stream to and through the firewall behind the glove box fuse block.
It's not connected to the fuse block but I cant trace it through the dash. I assume it goes to the switch on the steering column.
Suggestions please.
Let The Games Begin! First person with solution gets bragging rights and my gratitude.
Thanks for the help.
Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
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