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I have a 1969 20hp that I rebuilt and I was out testing it today. The motor was running great but at some point I would give you motor gas and the engine would rev up but the boat did not increase in speed. It drives at idle though. Any suggestions?
I just got a 20 hp mercury that i believe is a 1996 that i am trying to fix up. I just installed a brand new water pump kit. When idling and driving up to about high power it is peeing out water decently. when going above that and wot it starts peeing steam. Anybody got any ideas of what...