460 Ford Forum banner

1 - 6 of 6 Posts

·
Registered
Joined
·
374 Posts
Discussion Starter · #1 ·
After my engine gets warm anytime I turn off key the engine runs on for about 10-15 seconds and then shuts down. Why? Could it be spark plug heat?
John F.
 

·
Registered
Joined
·
5,319 Posts
You need to try to slow down the idle speed. Even a hundred RPM can make a big difference.
 

·
Registered
Joined
·
684 Posts
What's your initial timing set at? You could bump it up some, which will increase the idle speed. You can then close down the carb throttle plates some. Make sure your secondary throttle plates are open some as well, this will allow the primaries to be closed some.
 

·
Registered
Joined
·
9 Posts
Do you have an electric fan? I have seen fans feed back enough voltage when they are turned off and are winding down, and the engine will run on till the fan stops spinning.
 

·
Registered
Joined
·
113 Posts
I had the same problem. I slowed down the idle and went to a cooler spark plug with no success. Switching to 93 octane solved it in my case.

Just my experience.

Ron
 
1 - 6 of 6 Posts
Top