I had a car that did stuff like that one time.It was a Buick Starfire or something like that.It had an electric fuel pump in the tank,which I replaced a couple if times,and didnt fix it.One day it quit,and I hooked an electric fuel pump in the line under the hood,and it fixed it.It had a carburetor on it so an electric fuel pump like that only cost about 20 dollars.That pump in the tank always seemed like a bad idea to me.I had a Ford pickup with fuel injection that had a pump in the tank and one in the frame up closer to the fuel injectors.
It sounds like a bad wire.Also,working on big trucks for years,there are lots of electrical things that wont work if there is a bad ground.On old cab overs when you started having weird problems and the engine wouldnt start,if you cleaned the ground terminals that were outside of the cab in the weather,it would usually fix it.
In this case I wouldnt know what wire it is,but its kind of telling you its a wire somewhere if you hit a bump and it gets better or worse.I remember I had to weld a wire on the part of the tank that had the fuel gauge on it,or the part that goes into the tank,to hook a ground wire to, on my Chevy pickup when I put the new fuel pump in.
Or it could be a line,like others said.Since it kind of is like it was before the pump was changed,it sure sounds like a wire connection someplace to me.
Too bad it wouldnt be too easy to hook another fuel pump to it like the old Buick was.If you had a pump that would pump enough pressure,you could put it on there and wire it to a toggle switch.If it quit on you,flip the toggle switch and keep on trucking.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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