when i come down off high rpm quickly i get a high pitched squeak...runs fine. it sounds like a timing thing. what do you think? i tried picking up the rpm without advancing the timing and the same squeak was heard. could the tps box be going bad?timing is set correctly for idle and wot.
thanks
Can I put bigger carbs on a Mercury 135 to up horsepower? like 150 hp carbs? is there anything else i can do to this carburated engine to make it a sleeper 135 rocket?
