tctractors
Senior Member
The A25C has a wing mounted fuel tank plus a rear of cab high mounted boost tank, if the tanks are filled up you will not have any Sucking air issues, it is common to find faulty lift pumps on these engines but they still manage to run well enough, the Alpha drive can be something to check plus the torque stall speed will give you good information on the engine condition, a few air bubbles in the filter bowl would not be your running problem, your looking in the wrong place if it starts, revs and sounds good. tctractors