Ignition cut-out, Backfire
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Freshman User
Joined: Jul 2002
Posts: 48
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Ignition cut-out, Backfire
Have a 460 carb and experienced a problem.
Sometime I start the engine and after 4 or 5 minutes that it runs in the parking, it stalls without any reasons. Do this the same way I turn off the ignition switch. I wait 30 seconds and retart it and it runs OK.
Went on a trip this weekend and was running on highway on cruise at 60 miles per hour. Engine rans at about 2500rpm and suddenly it cuts like in my parking for about a couple of seconds and went back alive. I never touch anything even the cruise didn't went off. It never lose speed on the highway. But when it went back alive it made a BIG exhaust backfire. A real gun shot! My muffler didn't appreciate this!
Is this an intermittent ignition problem? I think the power is cut for a small time on the ignition. It's like I cut the ignition switch.
Any tips would be appreciated.
Wally
Sometime I start the engine and after 4 or 5 minutes that it runs in the parking, it stalls without any reasons. Do this the same way I turn off the ignition switch. I wait 30 seconds and retart it and it runs OK.
Went on a trip this weekend and was running on highway on cruise at 60 miles per hour. Engine rans at about 2500rpm and suddenly it cuts like in my parking for about a couple of seconds and went back alive. I never touch anything even the cruise didn't went off. It never lose speed on the highway. But when it went back alive it made a BIG exhaust backfire. A real gun shot! My muffler didn't appreciate this!
Is this an intermittent ignition problem? I think the power is cut for a small time on the ignition. It's like I cut the ignition switch.
Any tips would be appreciated.
Wally
Senior User
Joined: May 2002
Posts: 298
Likes: 0
From: Denver
Ignition cut-out, Backfire
It does sound like an ignition problem, but not the switch. I would staert with a resistance check of the coil, check it out side of the truck once siting on the bench then once shaking it. If the readings don't change then check the resistance of the spark wires, bending them while checking them. If none of these work post a nother message and will go to next steps.
Robert
72 Ranger XLT W/ 86 5.0l W/ AOD
krazdndenver(No Email Addresses In Posts!)
www.geocities.com/krazdndenver
Robert
72 Ranger XLT W/ 86 5.0l W/ AOD
krazdndenver(No Email Addresses In Posts!)
www.geocities.com/krazdndenver
Thread Starter
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Freshman User
Joined: Jul 2002
Posts: 48
Likes: 0
Ignition cut-out, Backfire
I've checked the around the coil area and the + wire of the coil felt down alone when I touched it... Exessive rust on the terminal. Surely a high resistance there. I fixed this problem and will see this weekend (it's a Motor home) if the problem always there.
Thanks for the reply
Wally
Thanks for the reply
Wally
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