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whats the easiest way to get gas to fill the carb bowl when empty? Seems like gas keeps draining from bowl when it’s sits for a few days. When it is full, truck runs great.
also, now with the new tank installed, it seems like a hard draw (take inlet on fuel pump off, suck on the line and it it takes a lot to pull gas through. I’ll have to check, maybe I have a kink in the line or the filter on backwards.
What size valve and fuel line did you install? There are check valves built into the carburetor and fuel pump, have either been rebuilt? Are you using a vented gas cap? It's conceivable that this is why the in-cab fuel tank was installed instead of troubleshooting the problem.
It is copper tubing so I’m assuming 1/8”. I rebuilt the carb. Also ran through the ultrasonic cleaner a few times. It is not a vented gas cap. But I was trying without the cap on.
gas gauge is not working either. Black wire is ground, center wire (yellow connector) goes to the gauge in the instrument panel. Maybe a bad ground. I thought I had it right down to bare metal.
It is copper tubing so I’m assuming 1/8”. I rebuilt the carb. Also ran through the ultrasonic cleaner a few times. It is not a vented gas cap. But I was trying without the cap on.
Wow! I hope not. 1/4" NPT valve at the tank and 5/16" tubing is standard up to the 1/4" jumper hose to the fuel pump, and 1/4" or 5/16" from the fuel pump to the carburetor. Better double check that size. The cap does not have to be vented if you are using the vent fitting on the top of the tank.
Brand new fuel. Just bought it yesterday. Gas can was clean. Gas tank was rinsed with some new gas and emptied. Maybe fuel filter is bad. It is not new
The question was about the fuel line itself. Did you blow it out? Do you have a pic of the filter? What type is it?
Fuel filter appears to be installed correctly, but the hose looks to be 1/4". The copper tubing looks to be 5/16" though. I see no reason why it shouldn't draw freely if the line isn't restricted in some way, or the fuel pump isn't working properly.
Just measured a piece of the copper line I cut off. ID is 1/4. I’m thinking the fitting coming out of the tank is restricted. It’s the only fitting NAPA had that screwed into tank and went to a barbed fitting. The back hose I used actually fits snugly over the copper pipe and held in place with clamp.
Copper tubing is measured by the outside diameter (OD) and the wall thickness. So if you have tubing that has a 1/4" ID, it is measured as 5/16" tubing with a .0625" (1/16") wall, which is considered a heavy wall tube.
I think I know the fitting you're talking about, it's only 1/8" ID
You should have a valve like this on the bottom of your tank, and not just a 90 degree fitting to a hose. https://www.zoro.com/zoro-select-bra...BoCASsQAvD_BwE
Well I replaced the fitting. It was not the issue but it was old so now it gone. The guys at Macs said the fitting was 3/8. It is not. It is 1/8 NPT. I used a 1/8 street elbow to 1/8 male by 1/4 barb to put rubber line on to fuel filter to shirt piece of rubber to copper.
09-23-2018, 10:35 AM
