1989 bayliner capri 85hp force outboard

[critters1976]

the promblem im having wth motor issues is, rough idling, motor dies when you put the boat in reverse, and top speed less then 20mph guessing, ( speedometer dont work).
i traded the boat last fall for my truck, guy said last time ran was like in july or so, all i have done was replaced the sparkplugs wth brand new NGK sparkplugs. if gas gauge is correct it has 3/4 of tank full of gas, if correct. i have put in 5 gallons of non ethenol gas, having the mixture of 50:1 mix wth 2 cyl engine oil i used for my dirtbike.
Also at first when i got the boat running out on the river, when you turn the motor to turn the boat the motor would die on you, but after running the motor for awhile it quit dying on me.
honestly my idea is to drain all the old gas out and put fresh gas back in it, but wanted to get some ideas what people think they would do or had a similiar problem. does anyone know how many gal my gas tank is also, its a 17ft bayliner capri 1989. ty

 

[KCeagle]

Re: 1989 bayliner capri 85hp force outboard

i think thats a 16' gallon tank. have you replaced, installed new fuel filter(s)? my force 125 has a stupid little screen filter on the side of the motor at the fuel pump and i added an in-line filter i can see.

 

[shakazulu]

Re: 1989 bayliner capri 85hp force outboard

@critters If you have problem with idling you should tune idle mixture screws on carbs . There is a sticky post on Force motors topic.
Also, you should adjust timing with timing light

@KCeagle What kind of fuel inline filter have you installed ? Do you have a link or photo ?