1995 Buick Park Avenue engine skipping

check your spark plugs and wires. the 1.5 is a bear to diagnose as it was a oneyear only and not many have a scanner or adapter for it. the wires shold have 5000 ohs per foot.

when I got the car it had the skip so I installed new wires and plugs, they are not the cheap or generic ones.
it only skips under load like when in overdrive and if the engine is not all the way warm it hesitates.
if I drive for about an hour the skip is gone and it has normal power.
I know the 1.5 is hard to diagnose, I can't find anyone with the proper equipment to scan it, the check engine light was on but since replacing the upper intake manifold and lower intake gaskets it is now staying off.

check your fuel pressure then it may be low should be 41-47 psi

the original owner had checked the fuel pressure and it was in range, not sure of how long ago but it was skipping at the time he did it.
the fuel pump is very loud, when you are stopped you can hear it in the car.
the filler tube on the gas tank has a few rust holes in it, can that cause a skip?
I was told before that it could be the start of a bad head gasket but I don't lose anti freeze or have mixing in the oil.

skips are normally electrical so check around coils for leakage is about the only thing I can think of. you might check compression and see what you have if there is a 20% variance then that wold be the one to look at.