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My 66 F100 stumbles anytime I hit a turn with much accelerator applied. I've kept the gas tank low to keep from overflowing the tank while sitting still again, and the gauge is totally inaccurate. If I'm going in a straight line there seem to be no issues, I can stand on the accelerator and it pulls hard.
I assume there's an issue with the pickup tube. Since I have to deal with the sender calibration I figure I would address the pickup tube at the same time. However, I'm uncertain as to what parts I might need. I thought I would just replace it, but I'm not seeing a sender for an in cab tank that has the float assembly and the 5/16" flare fitting for the fuel line. Any ideas?
First it seems you have a carburator problem not a tank problem. What carb is on your engine? First thing to check are the float levels.
The pick up and the fuel sender are separate parts. The senders are reproduced the pick up is not. The pick up is spot welded then soldered to the tank. The shop manuals tell how to trouble shoot the sender and gauge.
It is possible to replace the pick up tube but it is more than a little work. I converted my tank and lines to a 3/8 inch. By drilling out the 5/16 tube then silver soldering a 3/8 line to a brass fitting then screwing it into the remains of the original fitting and soldering it in.
I agree with Crop Duster - nothing as far back as the tank should affect acceleration on a corner since there should be enough fuel in the float bowl and fuel pump and lines to supply more than enough fuel for any turn - unless it's like a 1080 turn or something - maybe?
Thanks for the replies. I was mistaken in my recollection of the tank construction.
The carb is a rebuilt YFA from Mike's carburetor parts. I have a new carter electric pump under the cab, and new fuel line all the way. I wonder if the regulator from the PO may be failing? I watched the clear filter directly in front of the carb and sometimes it has barely any fuel in it...
Not yet, gasoline makes me pretty nauseous so I try to avoid working with it as much as possible. I'm also wondering if my fuel filters are too small, they look like they belong on a lawn mower. I have one before the pump and one at the carb.
Any recommendations on clear 5/16 fuel filters that aren't the reusable type?
Well sir, I think gasoline is going to be in your future unless you farm it out. You would not normally put a filter before the pump. Electric pumps are pushers not pullers. You only need one filter near the carb. The best electric pumps generally have a screen built into them to catch any big chunks that might come out of the tank. There are no clear filters that I would personally use. Those things are like you said made for a lawnmower.
I have to ask what was wrong with the engine driven pump that caused you to install an electric? I believe all the engine driven pumps in 66 had a replaceable filter built into the pump.
