Gags at 50mph
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Freshman User
Joined: Sep 2004
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From: Roanoke, VA
Gags at 50mph
As I was riding down the yesterday, my truck started to sputter and gag around 50mph. I figured it was some garbage in the fuel system somewhere but then it happened again today. I replaced a manual choke last weekend so I'm thinking that might have something to do with it. I have a 360 2bbl. Anybody have any thoughts on what's causing this?
Elder User
Joined: Oct 2004
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From: Winnipeg, Manitoba
Could be a fuel pump going bad, dirty fuel filter, vacuum leak, etc. Did you have the carb off to replace the manual choke? Is it set correctly so that it's fully opened when the engine is warm?
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Freshman User
Joined: Sep 2004
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From: Roanoke, VA
I just replaced the fuel pump and filter less than 50 miles ago. The carb was not off when I messed with the choke. I'm thinking I did not set things properly since it only happens at 50 mph and faster. This is all new to me and I'm kinda feeling my way through. Thanks for the input.
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Joined: Mar 2003
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From: nevada
Most likely fuel starvation probs, but once I had a coil go bad (secondary windings), and wouldnt let me get over 40 mph. Does it do it every time you hit 50, or once in awhile? Did you replace manual choke with manual, or electric choke?
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Freshman User
Joined: Sep 2004
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From: Roanoke, VA
I replaced the manual choke with a manual choke. The cable was stuck on the old one. It does gag ever time at around 50 mph. I did change the coil recently so I don't think that would be the problem. ????
New User
Joined: Oct 2004
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my truck did the same thing, same engine and carb. as your truck, all i did was stop using regular, and switched to super fuel. just a suggestion
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Elder User
Joined: Jul 2001
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From: Huntersville
Sounds like the choke might be being pulled closed causing it too choke down the engine. Make sure the choke can't be pulled closed without using the cable.
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From: nevada
other stuff to look at
Check your fuel filter, fuel pump pressure, float level. Something isn't able to keep up with enough fuel when you need more. I used to have a manual choke on my 390, and sometimes it would vibrate towards the closed position, but then you would be running rich. I also once had a problem with fuel pickup in aux tank, something would get sucked up to the pickup and no fuel would make it to the pump. My first look would be to the float level I think.
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From: nevada
one more thing
I have also pulled hose from carb and turned over motor (mech pump) or turned on elec pump to see how much gas was getting to carb. Pull the coil wire off first so it wont start, and have someone turn the key for you while you let it pump into a container. Would your fuel tank have a screen on the fuel pickup? Sometimes they get clogged up with crud too.
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Freshman User
Joined: Sep 2004
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From: Roanoke, VA
Well, I haven't changed a thing and when I took it out this past weekend it ran like a champ. I'm thinking it was just some crud in the fuel somewhere. Thanks for all the input.
Elder User
Joined: Mar 2003
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From: Phoenix Az, by way of Fre
my truck did that a while back...
then, it'd stall out from time to time for no reason...
eventually, it started happening with more regularity...
then, became undrivable.
had to pull the gas tank, and have it cleaned up and re-sealed.
Hope that's not the case for you, but, may want to find a way to check your tank in the meantime... for peace of mind...
then, it'd stall out from time to time for no reason...
eventually, it started happening with more regularity...
then, became undrivable.
had to pull the gas tank, and have it cleaned up and re-sealed.
Hope that's not the case for you, but, may want to find a way to check your tank in the meantime... for peace of mind...
Thread Starter
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Freshman User
Joined: Sep 2004
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From: Roanoke, VA
I hear what you're saying...I've had this nagging thought in the back of my head that the tank probably needed some attention. I need to check it out for, like you said, peace of mind...
Thanks.
Thanks.
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