S
looking for a lil help
84 merc mariner yamaha
made in japan
40 hp
13 p alu prop i know i know
5200 rpm's wot 29 mph gps
pulled old plugs very black and gapped at 25.
inst. new champ jy77somethings gapped at 35 and what a diff, no more ruff idle. took it out with it full of non eth gas ran it bout 10 miles and its still pretty much full. something that worries me is i cant get over 5200 rpms, we know the motor is 7" ptp but would it really drag the rpm down that much? (i think it should be running from 58 60 62? but thats a WAG), or, could i have a timing issue? i remember telling the dude at the shop dont let me blow it up when they did the carbs. could my high end jet not be set correctly
84 merc mariner yamaha
made in japan
40 hp
13 p alu prop i know i know
5200 rpm's wot 29 mph gps
pulled old plugs very black and gapped at 25.
inst. new champ jy77somethings gapped at 35 and what a diff, no more ruff idle. took it out with it full of non eth gas ran it bout 10 miles and its still pretty much full. something that worries me is i cant get over 5200 rpms, we know the motor is 7" ptp but would it really drag the rpm down that much? (i think it should be running from 58 60 62? but thats a WAG), or, could i have a timing issue? i remember telling the dude at the shop dont let me blow it up when they did the carbs. could my high end jet not be set correctly