New here. My truck is fuel starved again!

[hieronymusbotch]

Been in this position before. Driving along beautifully when for no apparent reason she starts to stutter and cuts out. Will restart for awhile but cuts out each time then eventually won't even try.

Last time (a month ago) went through the entire fuel system even replaced my Weber carb with a new one to no avail. Finally replaced the new fuel pump (6months?) and bingo she starts up and runs better than ever for one month. Really, purring like a kitten, great mileage, running strong even on the highway.

Just did it again yesterday. Towed back to the driveway. Gone through the fuel system again and everything checks out. Fuel pump again?

Has anyone had issues with the new fuel pumps from our host? Could something in my system be weakening them?

Thanks in advance for any help!

[jonnyc]

What do your tank innards and fuel pick-up tube look like? Do you have any filters in the line? How long does it run before it dies?

[siii8873]

I'd check two things first. Make sure your fuel cap is venting. Next time it happens open your fuel cap and you might hear a vacuum. I had these exact symptoms after changing a fuel cap, chased it for a while and this was the cause.
Make sure your fuel lines are not allowing air in on the suction side of the pump. I had this problem with a fuel change over valve. This caused more of a starting problem not a running problem.

[4flattires]

Welcome to the board, but you have to help us out a bit here. If your hanging parts just to see if it solves the problem, please just send me your old parts.

If your guessing fuel pump, and you say everything checks out, was that not checked? Post your test results please. Electric or mech? Does it fill up a soda can in 2 seconds? 20 seconds?

What mods have you done to your truck?

[hieronymusbotch]

Thanks, I checked the fuel tank and it's clean as a whistle. Same with the pickup tube. I disconnected the fuel lines and blew them out with a compressor. There's an inline filter between the fuel pump and the carb which I change regularly.

It was running approx 30 seconds before crapping out but now it's not even firing. Turns over nice though.

[hieronymusbotch]

@ fourflats

You may most certainly not have my old parts as I am hoping to build a second truck from them.

No mods to speak of, The engine is a stock 2.25 petrol (5main bearing according to the serial number). Still looking for a soda can, I'll get back to you.

@siii8873 I thought of that fuel cap and checked for suction as you suggested. None detected. I also tried running it with the cap off with no appreciable change. The fuel lines are new as of a month ago and I have checked all the hose connections several times. Will check the cap again though.

I'm no mechanic, though I'm not completely lacking in experience. Thanks to everyone.

[gudjeon]

I went through a couple of new fuel pumps only to find them all bunk. Went to an electric with a few mods and never looked back. I don't think its a problem with what the hosts supply. They seem to be non-functional no matter who sells them. I just know I don't want to rely on a part that I have to try several out before I find one that works. Especially when out in the sticks.

[hieronymusbotch]

I'd check two things first. Make sure your fuel cap is venting. Next time it happens open your fuel cap and you might hear a vacuum. I had these exact symptoms after changing a fuel cap, chased it for a while and this was the cause.
Make sure your fuel lines are not allowing air in on the suction side of the pump. I had this problem with a fuel change over valve. This caused more of a starting problem not a running problem.

Definitely not the fuel cap. Going to check the pipe connections at the fuel pump when this storm blows over. No visible leaks, but hey.

[73series88]

if your pump is good i would check your condenser. i had one that would give the same symptoms.
brand new. put an old mga one in there and it was fine. they dony make parts like they used to.
good luck and welcome
aaron

[Whiterabbit]

Ha! Was just gonn'a say that. Ignition problems look alot like fuel issues. Pull a plug and see if you have a strong spark. Coil overheating? Had that problem in a Fiat. Acted like it was running outt'a fuel after 30 min, new coil and she screams now.

[jonnyc]

Mine would run for about 15 minutes and die. I replaced the Crane electronic unit and it's been fine for about a year. Took me a few years to figure that one out!

[PH4]

if your pump is good i would check your condenser. i had one that would give the same symptoms.
brand new. put an old mga one in there and it was fine. they dony make parts like they used to.
good luck and welcome
aaron

I had a condenser that did the same thing. Gave the same signs as a fuel problem.

[bfishel60]

Mine wasn't the condenser but the braided wire to the condenser. Sometimes it would get pulled apart and sometimes it worked fine.
The truck would restart fine sometime, other times it would take several tries.
Bill F

[hieronymusbotch]

if your pump is good i would check your condenser. i had one that would give the same symptoms.
brand new. put an old mga one in there and it was fine. they dony make parts like they used to.
good luck and welcome
aaron

Ha! Was just gonn'a say that. Ignition problems look alot like fuel issues. Pull a plug and see if you have a strong spark. Coil overheating? Had that problem in a Fiat. Acted like it was running outt'a fuel after 30 min, new coil and she screams now.

Mine would run for about 15 minutes and die. I replaced the Crane electronic unit and it's been fine for about a year. Took me a few years to figure that one out!

I had a condenser that did the same thing. Gave the same signs as a fuel problem.

Mine wasn't the condenser but the braided wire to the condenser. Sometimes it would get pulled apart and sometimes it worked fine.
The truck would restart fine sometime, other times it would take several tries.
Bill F

Yup, thank guys. I began to question the ignition system when it would no longer fire up at all and had ordered a new condenser and points along with wires and new plugs for good measure as these are all a few years old and did a bit of sitting around doing nothing. Didn't bother with the coil since that's only a year old. After reading these I checked and have zero spark. Battery checks out, wires are proper and sound. Crap.

Anyone care to recommend a solid coil? What do you all have installed that has worked for over one year?

[Nium]

Are the points gaped correctly? Is the low tension lead sound because on a 25D4 (domed cap) dizzy that does and will go bad and without that little 2 inches of wire the rig won't run the sparkplugs won't spark and the rig will die when the distributor advances. Before replacing anything else check the low tension lead to make sure it isn't broken and causing an intermittent open. If you have a 45D4 or Ducillier (s/p) dizzy the low tension lead is incorporated to the points so it is replaced with the points.