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Electric choke on Edlebrock carbs

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bilge_doctor

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"I installed the Edlebrocks on

"I installed the Edlebrocks on my 77 Trojan with twin 318s two seasons ago. I connected the electric choke wires to the primary side of the coils. Edlebrock does not recommend this but there was no other place that I knew of that worked with the ignition switch. The port engine runs fine. The starboard starts and warms up and then starts missing. Voltage check at the the primary side of coil shows only 3 volts and fluctuates up and down plus or minus 3-4 volts.

The boat has factory Chrysler electronic ignition. I have swapped the coils, and ignition modules from the port to starboard side and the problem stays on the starboard engine.

I can run a new wire from the dash to the choke but really am more concerned as to why the two engines are different.

Any help or suggestions will be appreciated."
 
"You should have 12V to the pr

"You should have 12V to the primary side of the dropping resistor (the rectangular white ceramic component). At the coil primary the dropped voltage should be ~6V... or thereabouts. Seeing that your voltage is low, I suspect the resistor's gone out of spec. or the connections between it and the coil are not so good. That might explain the missing problem with the port engine. Edelbrock choke uses 12V so if you're connecting it to the primary post of the coil it's getting reduced voltage... that's why Edelbrock recommends against using the coil primary."
 
"so, the choke should be conne

"so, the choke should be connected to the primary side of the ballast resistor? i think mine is connected to the coil."
 
Choke should see ignition-swit

Choke should see ignition-switched 12V. Primary side of the resistor should be fine. Please let us know how you do.
 
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