Farmall 95 tractor. can not get fuel to the main fuel filter and the clear fuel filter is only half fuel. Blew air bank through fuel line to the fuel tank and all seems fine there. Any ideas

SOURCE: engine runs bad at half tank or less

Ok ready for this one,new gas cap,its true cars with bad gas caps will cause the check engine light go on,or your problem,it has to be pressurized when full and no air in the tank its ok,but as you use gas and have air in the tank with the low fuel the air pressure is leaking pass the cap,thus losing pressure,too bad you had to fix all the other stuff but look at it as an investment,after this works please give me a fix ya thanks

SOURCE: 95 4runner

check your asd relay or fuel pump relay

SOURCE: Farmall Cub 1955, runs fine for about 20- minutes

I have cub that done same thing, there was crud in orfice between tank and sediment bulb, cleaned orfice, runs fine.

SOURCE: echo shred n vac starts,idles, runs to about half power then bogs

Check the grommet that sits on top of tank where lines from go carb. Grommet may be rotten and crack. Try that. Have you ever replace the carb repair kit? The diaphram may be torn, defoam or have holes in them. Carb kit cost arount $10, but don't mess with the welch plug or screen in carb.

Bobby Poirier

• 167 Answers
• Posted on Jun 09, 2010

SOURCE: 1982 Chevy K10 Fuel Problems

Check to see if timing belt is broken. or wiring to crank-shaft sensor and check sensor itself on front of flywheel typically but may be on side of block usually the further towards the transmission is Crank and closer to front is cam sensor.

Check relays by switching from others of the same numbers.
Crank-shaft positioning sensor is bad perhaps.
Remove plug under vehicle that leads to fuel pump and check for voltage when key is turned on. if voltage is there is either defective fuel pump, was put in wrong or is harness from that point to the pump.
try banging the tank with hammer as someone turns key on.
 check harness from fuel pump to where it goes into the body - remove from body plug and inspect.
Should be either and or both a fuel pump relay and fuse! 
Run 12 volts to the positive side of the fuel pump wiring to see if pump is good. 3 wires usuallly  1 is ground for both the fuel guage and the other positive for the pump. and other is positive for the fuel pump guage and these two wires for the guage will show some resistance. put a fuse inline with the 12volts to the fuel pump positive but cut the line to the body prior to this - temporarily.
Could be bad switch in ignition unit in steering column but doubtful.

Hope this helps.