I have a 91 TBI engine that has 28psi @75mph and about 20 @ idle. It also only has about 80k miles but has been sitting alot. Any thoughts on what might cause this? If it is the pump how much room do you need under the pan to be able to sneak it out from the cross member. I only have about 2.5 to 3" of room. Any quick good fixes or ways to check what it may be.