Hello all. '92 70 hp Force 3cyl w/ single carb. Heres my problem, engine runs fine mid and high speed. But in the no wake zones and around the ramp she runs rough and is a bit shaky. No excess smoke seen. If I ride around a while looking at the boats docked (10-20 min) she seems to load up on me. Then when I throw the coals to her to get outta there, she shakes for a few seconds as if shes loaded up and eventually smooths out and the boat planes up. I measured the oil mixture accurately, 16oz to 6 gal. Took carb apart, including all jets and blew passagways out, even pulled the welch plug. Carb was and is clean as a whistle, even before I started. get home and pull the plugs, #1 is wet black fouled, #2 is as it should be, and #3 is a little worse than 1. BTW, using surface gap plugs, NGK. Compression is 1-115, 2-115, 3-110. I can see oil loaded up inside the cylinder with flashlight. All bolts on the powerhead are still painted tight, no signs of being worked on. Any ideas out there? I know everyone is busy with their own boats, but.....
