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Drove my 1977 F150 to get gas last night. Started up and ran fine. Left the gas station and it died turning into the neighborhood. It would start up and idle for a short time in park then die. If I tried to put it in drive it would die right away. I unplugged the breather tube from the engine to the air cleaner and for some reason it ran and I was able to get it home. The vacuum gauge would run between 10-15 when it would idle in park then drop way down and die. Any ideas? Disconnected this from the air cleaner and the truck ran and I was able to drive home.
Did it idle sluggish when started, or fine before it died? If sluggish, try advancing the timing some, then start it, and move the timing around until it runs best.
If it starts running some better, and the vacuum comes up some, you most likely have jumped timing a tooth from a worn fiber timing gear.
Did it idle sluggish when started, or fine before it died? If sluggish, try advancing the timing some, then start it, and move the timing around until it runs best.
If it starts running some better, and the vacuum comes up some, you most likely have jumped timing a tooth from a worn fiber timing gear.
It idled a bit sluggish for a few seconds then it would die. Started up again and put it into drive right away and it died immediately. Once I pulled the breather tube off the air cleaner it ran enough to get home. I messed around with the idle screw today and now the vacuum gauge is around 15 at idle. Took it for a drive and it was working.
Could fueling it up on such a hot day have caused this issue?
E85 gas boils easily. Could have very well had boiling gas in the carb causing your problems, especially since it straightened itself out.
I took it back out and it started happening again. I run non oxy premium in it, so it's higher octane. I removed the hose from the PCV valve and kept the other end hooked up to the carb and was able to drive it home. This issue is pissing me off. I drove the truck 150 miles home a few weeks ago and never had an issue.
Maybe something to do with ignition? Did you check the coil and the main coil wire that goes to the distributer? Maybe when the motor gets so hot it allows spark to jump from somewhere in the wire? Just a possibility…
Does it die like someone turned the key off or does it start to sputter then die?
Sputter then dies. I took the old fuel filter off and it seems a bit more restrictive than the new fuel filter. Got the new one on and will give it a shot. If that doesn't work I will light the truck on fire. JK.
I had a truck do that many years ago. It had the old brass "rock" type fuel filter in it like Chevy used to use in the 60's. The truck sat a lot, and the gas gummed up the filter enough that it would run great for a while, then start sputtering and backfiring. The filter was glass, and fuel was showing in it, but taking the cartridge out fixed the problem. You may have found your problem.
What kind of carb is on it? Some of those have a little mesh fuel filter that can get clogged up. If it was pretty low on gas when you got to the gas station it could have sucked something up from the bottom of the tank and clogged something up.
What kind of carb is on it? Some of those have a little mesh fuel filter that can get clogged up. If it was pretty low on gas when you got to the gas station it could have sucked something up from the bottom of the tank and clogged something up.
I completely forgot some had a filter that screwed into the carb bowl.
Get anything figured out or is it time to get some gas and a lighter? Lol
LOL! I replaced the fuel filter and it runs fine until it gets hot, then it shuts off like the key was turned off. I can usually tell when it's about to happen as it feels like the truck won't accelerate then it dies and I guide it to the side of the road. If I try to restart it doesn't want to turn over. After it sits for a few minutes I can start it and it will drive again. I have a new pickup coil on order as I've read that can be the problem. Fingers crossed that fixes it. Really hate to light her on fire.
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