after replacing timing belt and auto tensioner. I checked the compression. two (2) of cylinders were under 35 psi. Would it be better to have my cylinder head rebuilt or bye a used or rebuilt one? Any thing would be helpful! stan xx

 

Your mechanical timing is VERY likely off a tooth or three. Check it and test again.

 

Why was it you did the timing in the first place. ie. from broken belt? ie. bent valves. Or like ^^ he said timing off.