ok so let me explain my situtaion.. a month ago i started having some misfires so i did plugs.. ran fine for a month.. did plugs again and started having horrible misfire.. took it to my mechanic and he checked plugs coils injectors and did a compression test.. #3 is at 130 but fluctuates all others 190. any suggestions besides a motor which will run me 5000. btw. the mechanic is my wifes dad so i dont think he is trying to stick me... any or all suggetions the mechanics or stumped and i dont have 5g to put in a new motor..

 

Borescope the cylinder.