won't start when hot
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Junior User
Joined: Jun 1999
Posts: 89
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won't start when hot
I have a 428 in a '73 F-100. When the engine warms up it will not turn over. It does fine when cold. The battery & selenoid are good & jumping does not help. I can push start it & it fires right up. I have Hooker Competition headers & think they may be heating up the starter. Does anyone make a starter heat sheild for the FE series? Do they help?
Laughing Gas
Joined: Jun 1999
Posts: 903
Likes: 0
From: Banning CA
won't start when hot
What you have is a bad starter, may have been caused by the headers, replace you starter, if you can't find a shield, just make one out of thin steel. Anythng you add will help.
Dave
Dave
Senior User
Joined: Jun 1999
Posts: 155
Likes: 0
won't start when hot
One of two things went bad:
You have heat damage to your starter so you need to replace it.
Your cable from the selenoid to the starter is too light.
When you replace the starter, wrap both it and the headers with header heat wrap to protect it.
I use 4ga. cable from my battery to the sel. and from the sel. to the starter. I had this problem in my '84 bronco with a 302 and I noticed my sel. smoking when I tried to start the motor when warm. I had an 8ga. cable setup so I switched them both to 4ga. and haven't had a problem since. I still have the old sel. in the Bronco so it shows you the cables were too light duty.
PS: I've got a 428 I'm going to build this winter for my '68 Mustang. It ought to be a fun ride.
Good luck.
Bruce
You have heat damage to your starter so you need to replace it.
Your cable from the selenoid to the starter is too light.
When you replace the starter, wrap both it and the headers with header heat wrap to protect it.
I use 4ga. cable from my battery to the sel. and from the sel. to the starter. I had this problem in my '84 bronco with a 302 and I noticed my sel. smoking when I tried to start the motor when warm. I had an 8ga. cable setup so I switched them both to 4ga. and haven't had a problem since. I still have the old sel. in the Bronco so it shows you the cables were too light duty.
PS: I've got a 428 I'm going to build this winter for my '68 Mustang. It ought to be a fun ride.
Good luck.
Bruce
