why so high

[mickey117]

i have a 85 rude 90 hp when i start it up it idles at 1400 rmp on a hose . then when i shift into gear it seems to be good.but then when i put it back into nautral the motor revs up really high to 4000 which is when i shut it off.why is it doing this? i did just take the shifter off the side .

 

[kenmyfam]

Re: why so high

Could be a link and sync issue. Do a search on it.

 

[mickey117]

Re: why so high

do a seach where

 

[kenmyfam]

Re: why so high

Top of the forum there is a search function. Scroll up and see. Just below your name when signed in.

 

[tashasdaddy]

Re: why so high

on muffs, you should be idling at around 800-850. because there is no back pressure on the exhaust, as there is in the water. in the water should be 650 -700 in gear at idle. there is no search for the linc n sinc for the omc motors, as it is a little different for each engine and year. you are not suppose to rev the engine above 1500 on muffs anyway. it sounds like you have a return linkage problem, either on the motor, in the control cables. exactly what did you do.

 

[mickey117]

Re: why so high

thanx i guess i'll start checking the cable

 

[tashasdaddy]

Re: why so high

in the side of the carbs, where the throttle plate rod comes thru, there is suppose to be a return spring, that could have come loose. allowing the throttle plate to dance.