hi everyone.<br />i notice when my engine is running at idle, the tach reads about 700-750. there is a regular surge, and it bumps the rpm up to about 800.<br />my service manual says the max idle in gear is 650. am i going to damage my engine? if i adjust the throttle linkage to idle below about 700, it will stall. compression is over 115 on all four and within 7 pounds of each other.<br />i am wondering what could be causing the idle problem? also seems a little rough at idle.<br />the rpm seems to steady at about 1500 (the highest i want to run on a pair of earmuffs).<br />i have changed the plugs, installed new coils, stator, rectifier (not to fix this problem, but because it needed to be done when i bought the engine), and rebuilt the carbs.<br />i am also running it on a flushette. <br />i have completely restored this boat, and have not taken it onto the water yet (next weekend!!!).<br />my local boat guru mentioned backpressure because the engine has no load running it on a flushette?<br />he also told me not to worry until i put in in the water and put a load on the engine, then see how it acts. but, you know...it's my baby...
