Okay, Bubbakat. I am here to once again test your knowledge (and get a little help at the same time - lol) Here is the problem.... Fuzzface has a 1970 85HP Evinrude. He has rebuilt the carbs. Compression tests indicate a psi of 100 to 108 on each cylinders. The two cylinders on the left side of the motor (looking from the prop to the front) bled the psi reading off and wouldn't hold, indicating sticking rings - we think. We put it in the lake, kept it on the trailer, and ran it. It will run at a fast idle and then experiences a missfire and it dies. If you crank the throttle up by hand, it runs great... no miss, no vibration, etc. He only bought this boat for his wife so she'd leave his fishing boat alone. She wants to take the grandkids skiing and tubing. LOL. He is pulling his hair.