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Old 10-07-2003, 02:11 PM   #15
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1997 30' Excella
1983 31' Airstream310
Austin , Texas
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Re: Re: electr versus heat riser choke

Originally posted by 59toaster

That's not how GM likes those chokes wired. GM installs a oil presure switch inline to the choke power. That way the choke only gets power if the engine is running. ...
I'll be...Thanx for the info. Had no idea thats how the brains at GM work. Makes sense for a consumer product.
But I do like the flexibility of my installation.

1983 310 Classic Motorhome
1997 30' Excella Trailer
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Old 10-07-2003, 04:38 PM   #16
Rivet Master
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1978 31' Sovereign
Texas Airstream Harbor , Zavalla, in the Deep East Texas Piney Woods on Lake Sam Rayburn
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Electric Choke

For reference material --

My 6.5 Onan has an electric choke with a heat element adjacent to a thermal sensitive spring to open the choke after a few seconds.

PO (or service personnel) left off the grounding wire to the heat element. The heater was trying to ground through the element.

Ungrounded element + generator vibration = sparks
Lots of them.

The choke area actually caught fire during the tuning of the carburetor after the recent rebuild (way too rich of an initial mixture). I had not yet reinstalled the air filter assembly.

Good thing I was right there, no damage done, but it could have been disasterous.

Fabricated a ground wire - no more sparks.


"Suck it up, spend the bucks, do it right the first time."

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