Fuel starving after only 50-60 miles from full. Added inline fuel filter routed off to rt side of airbox (for easy service) down and under fuel supply rail. New petcock recently installed after tank cleaning. any suggestions or similar problems?

If there are no leaks anywhere along the fuel lines, your fuel pump inside the tank is trying to tell you that it needs to be replaced.

there is a coating in fuel tank these bits loosen and go into carbs and block all jets, if you havent done this and this fixes problem you best put an inline fuel filter on bike to stop debris going into carb, these filters are good for a thousand miles i would recommend a car on like they used to have on old minis they are £1.98 on ebay

Okay, this is different. For one thing, the fuel cap will not show pressure. It is a negative Vacuum system incorporated with the Evaporator Emissions system. You check fuel pressure at the test port on the fuel rail.

What can happen is the plastic fuel strainer in the tank can dissolve into bits. These floating bits can redistribute and clog the fuel pick-up.

Second, at a point in time, gas station filters were a collection of tiny plastic beads. When the sack containing them ruptures, the beads are pumped into customers fuel tanks.

Anyway, it sounds like you have an intermittent fuel blockage. You might try changing the inline fuel filter and pump some fuel for a sample.

Hello! Which engine is installed in the vehicle; 5.0, 5.7, 6.5 (Diesel) or 7.4?Guru...Saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

check the air flow

Ford had a small fuel filter up near ware the fuel line comes into the eighter the carb or fuel injector main on some fuel injucter engines . Im not sure what engine you have .But my ford use to give me a lot of problems with this filter until i cut into the fuel line and added a inline filter before it mine is an 85 . So look where the fuel line attaches to the fuel inlet its a 3 or 4 dollar part but its a vary fine mesh filter and clogs easy the older the vehicle is the more sediment you end up with in your tank .I did mine 10 years ago haven't had a problem sence Good luck

Interesting..you want to check up front on your fuel rail this is located top of the motor where all your injectors are attached to . there should be a bleeder screw sometimes plastic kinda looks like a tire valve. With you just turning the key to the on position the fuel pump should come on and charge the rail. about 40-60psi so with the key on, not engine on depress the valve and fuel should shoot right out (be careful have a rag handy about a tablespoon will come out.) If this is the case good. The other thing to check is vacuum. check to see if you can hear a vacuum leak under the hood and visible check all rubber and poly-plastic lines routed under the hood. Paying special close attention to the intake manifold, and Throttle body. Good luck hope this helps

Check the in line fuel filters. Dirt and debris can clog the filter under vacuum pressure from fuel pump and starve the engine. After the car sits and the vacuum is released, the debris falls away from the filter allowing the fuel to pass thru the filter until it clogs up once again. There are also in tank filters but more than likely the culprit is the inline. They are pretty inexpensive and easy to fix.

the canister fuel filter is partly blocked. you will find it under the car at the rear . it is an easy fix . take off fuel cap . it is an inline filter only 2 clips to undo .replace with new one which costs about 10 pounds when you see new one you will see how easy it is to do

clean out the carb and fit an inline fuel filter between the pump and the carb .