rough idil 125 force

[jelecole]

with help from everyone here i now have the engine running. its an 89 bayliner 19ft ldrive. it runs between 30 to 35 bepending on the weight at 5000rpm. still have a miss when idiling or low rpms in gear. all cylinder around 135 psi, all seem to be firing fine. new plugs and carbs cleaned and adjusted via sticky from the forums. can anyone point me in a direction. would like to find the miss, but doesnt stop me from using boat. no miss a higher rpm or if there is it isnt noticable. thanks for the help

 

[jerryjerry05]

Re: rough idil 125 force

Start with the fuel pump and then clean carb.
Chryslers and Forces and Mercs/Evenrude/Johnson etc aren't gonna idle good.Some do,some have
act like they are missing.
Try the clean and reset he air screws.
In till they just bottom out GENTLY or you can cause serious damage then out 1 and 1/8turn out.
Then in the water motor, warm, and in gear.Idle about 750-800 rpm.
Turn the air screw in till it misses bucks coughs.Then out 1/2 turn.
Make sure there is no exhaust leak under the hood.J

 

[jelecole]

Re: rough idil 125 force

it idils around 1000 went the miss happens rpms jump to 1200 - 1300. and its not constant sometimes idils with no miss( most time it misses). cleaned and adjusted carbs, rebuilt fuel pump and cleaned fuel reciruclation line and screens. sir screws set aliile more than 3/4. rechecked timing. its not just a rough idil i was exspecting that but thus is a very noticable miss. got me scratching my head.