Lift Pump IH 3200

Usually you can feel the pump start to get harder to push when it is full. Have someone crank it while you pump, it should start no problem.

 

I will upload a picture of what your engine should look like. Find item 6 in the picture. It is pointing to a schrader valve, just like the type on tires. Remove the plastic cap and get a small screw driver and push in the center pin. Pump the hand primer until there are no more air bubbles. This will make a bit of a mess as fuel will leak out of here when your are priming, so have a catch pail under the truck. Once the fuel coming out has no more signs of air bubbles, put the cap back on and pump the primer maybe a good 20 more pumps and you should be good to go!

 

Ok, lets start from the beginning, LOL! So this truck had some kind of starting or fuel problem before? You replaced the transfer, (lift) pump, engine still hard to start and now you notice bubbles in the fuel filter bowl? Sounds like it is sucking air. The 150 micron mesh strainer, strainer drain, and the quick connect fitting on the fuel filter housing are all on the suction side and possible points for air to get sucked in. I hope you installed new orings on the steel fuel lines to and from the fuel pump. I doubt the pump is bad. This is one pump we hardly ever have to change, but gets mis-diagnosed all the time. That engine also has a dead-head fuel system, meaning that there is no return fuel. All the more important to make sure any air in the system does get bleed out. Double check your fuel lines. I think yours has the plastic quick connect type of lines, check the orings for being worn or cut. Be careful, those plastic connects break easy. If you find nothing, you can to pressurize the inlet of the fuel filter housing where the fuel line from the tank goes in with regulated shop air of 20-30 psi or so and see of the housing is leaking anywhere.