i just moved form wa state to nc when i got to north carolina my rx7 witch was in a trailer for three thousand miles lost over half its hp. with no load the engine is not as snapy as it should be. and under load it has a top speed of 55 but it takes 1 min to get there. i can turn the engine over with my hand on the pully and it has 0 compresion when i do that but when i turn it over it has about 90psi its geting good spark so it would have to be eather a compresion pr fuel problem but i dont even know were to start. i just want my hp power back

 

How are you checking compression?