Compression as follows....Cylinder 1 = 146 // 2 = 149 // 3 = 145 // 4 = 90 Also, engine will not achieve high RPM's, engine lopes and that tell tale sign of 'white' smoke is coming from the prop exhaust. These are all signs of a blown head gasket, BUT IS NO HEAD.....
Number 4 plug is washed...
