Engine sputters but does not fire
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5th Wheeling
Joined: Feb 2020
Posts: 39
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Engine sputters but does not fire
Hello,
I have an 86 f250 w/ 460 4speed manual, I recently replaced the ICM do to a crank no start. The truck moved about 100 feet before the rpm began jumping all over the place and then the engine died. I haven't had a lot of time to diagnose anything major, the bowl has fuel and is spraying into the intake, timing was good before I replaced the ICM. other than that I have absolutely no idea whats going on.
I have an 86 f250 w/ 460 4speed manual, I recently replaced the ICM do to a crank no start. The truck moved about 100 feet before the rpm began jumping all over the place and then the engine died. I haven't had a lot of time to diagnose anything major, the bowl has fuel and is spraying into the intake, timing was good before I replaced the ICM. other than that I have absolutely no idea whats going on.
Lead Driver
Joined: Jun 2013
Posts: 5,670
Likes: 1,160
From: Tolland, CT
FWIW, I learned years ago with something this old, bite the bullet and buy a rebuilt distributor. Cost me a lot to learn that lesson. I could have saved a couple hundred if I had just done that to begin with. After the new ICM was installed, the coil went and took the ICM with it. A rebuilt unit lasted many years.
Lead Driver
Joined: Jun 2013
Posts: 5,670
Likes: 1,160
From: Tolland, CT
Last summer I had to clean the contacts at the coil connector. My 302EFI kind of did the same thing.
Not sure how a 460 is wired but pull the connectors and make sure the terminals are clean.
Not sure how a 460 is wired but pull the connectors and make sure the terminals are clean.
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