Well folks, here's one for ya...

I just got a 71 F100. It had been sitting for a bit, so (with the help of some of you folks) I replaced a bunch of stuff (alternator, starter, solenoid, all the usual things). The problem was that when the truck started to warm up and got under a load, it would just die. After sitting for a half hour or so, it starts back up. The fuel things all seemed to be ok, so last night I rebuilt the carb. Started up this morning just great. Let it warm up and took her out for a spin and the same thing happened. It starts to backfire, then finally quits. Leyt it sit, and off it goes again.

Any ideas?

Steve

 

Had a similar problem with a different vehicle. The problem was after sitting for so long, crap "grows" in the tank and clogs the pickup. It would idle forever, but once you got on it it would spit, cough, and die. Let it sit for a while and it would start right up (crap settled to the bottom of the tank). Or get out and rock the vehicle (i.e. slosh the gas around) and the pickup will free itself of the gunk. Solution: drain the tank and run some tank cleaner through it. If any rust starts pouring out, time for a new tank. Unlikely, but possible.

Hope that offers some insight....

 

I know you said you checked the fuel system but I had a clogged fuel filter do the exact thing under load. Would idle all day long but give it a little gas and die time....

 

Yeah...it's like I got all the big stuff and have to do the little stuff now. Hope I don't need a tank. Anyone know the best place to find one and what they run?

 

I had the same problem and when i finally cut off, I checked the float bowl and sure enough it was empty. My problem was a completly cloged filter in the carb. Since the carb was rebuilt, I'm sure that you replaced that filter.

Chris

 

Good luck finding a NEW replacement tank, I don't think they exist. You're best bet would be to remove your tank, clean, coat with a gas tank sealer and reinstall.

 

Check E-bay motors search 1973 ford truck. I think there's one still being auctioned.

 

Sometimes I wonder which days of the week I am stupider on than others!!! I just pulled the canister off again, and looked at the filter. The fuel filter still looks good, but there was about 14 pounds of crap in the canister. Looks like a tank cleaning is is in order. I think...

 

Just checked ebay...that tank is gone, but thanks for the pointer!!!

 

If you can run the truck until the tank is nearly empty, it will make removing it easier. I have pulled the tank line off at the fuel pump and blown compressed air back into the tank. That cured my problem. The PO had painted the truck without covering the filler and when sticking the pump nossle in was scrapping paint off and into the tank.

It isn't too hard to remove it and clean it out.

John

jowilker
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66F100s Rule
In the cool still quiet of night you can hear chevies rusting away.

 

jc whitney had replacement gas tanks for ford trucks, even have polyurethane ones that wont ever rust again....i would check there if u are going to have to get a new tank...otherwise i would just drain and clean like everyone else says, and if u cant run it till its empty, use a hose to get the gas out...