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88 Supra TS6M Hard start when hot.

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Joined: 30 May 2017
Location: California
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    Posted: 31 May 2017 at 3:33am
I have a 1988 Supra Comp TS6M with the 351 Windsor.
It will run fine for 15 - 20 min through our no wake zone and when we get out on to the main lake we run around at 25 - 30 mph for 10 minutes or so. Once we stop and get a skier in the water it will crank and crank what seems like forever. Usually takes cranking 3 separate times for 10 - 20 seconds to start.

The coil gets extremely hot and i think that is the issue but don't know exactly what I need to trouble shoot.

The boat was converted to electronic ignition by the previous owner.
The ignition module has 1904 on it. It also has a purple and black wire that come out of the distributor. The purple wire connects to the positive side of the coil and a pink wire connects to the positive side of the coil also and runs back to the resistor.
The black wire connects to the negative side of the distributor and also has a grey wire that runs into the wire loom I assume to the gauge.
The coil has #903 on it and says use with external resistor.

What voltage reading should I have at the +side of the coil?
Should I be using a different coil?
How many Ohms should the resistor have?
Should I pull the resistor?

If anyone has any trouble shooting ideas I would greatly appreciate it. This is a prestolite distributor and is stamped with a CA im assuming its a california distributor if that makes a difference.

Thanks
Brian
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