My engine has 254 total hours and had a new powerhead installed at 125 hrs. The engine has started running rough when first hitting the lake during acceleration, but starts to run on all cylinders after a couple of minutes of running. I checked the compression this weekend with the following results (when looking at the back of the engine).
Right cylinders, bottom to top, 105, 108, 112.
Left cylinders, bottom to top, 97, 102, 105.
I was alarmed that the left bank of cyclinders were all lower than the right back, and the lower left cylinder was low. All above numbers were cold.
I warmed up the engine and received the following numbers:
Right cylinder, bottom to top, 100, 107, 105.
Left cylinder, bottom to top, 90, 95, 100.
What do you guys think? I do not want to put a new powerhead on this if I only will get 125 of use. Any thoughts??? The boat is a 95' Stratos 201 pro.
Thank you for looking.