1983 force 85 hp

[millerpdt]

hey guys, i just purchased a 16ft bayliner capri bowrider w/85hp force ob-external fuel tanks-took it out yesterday( the boat flies-2 larger adults and one large child) getting 43mph at speedo-but when i troll at slower speeds (like for fishing) after about 5 minutes i get a fume alarm-is this normal and i shouldn't be trolling with the 85hp?? also i have a 6.5 gallon fuel tank mixed at 50:1-what should my consumption be?? it seems like i used 2-3 gallons in a hour and a half of bombing around full throttle with the occasional trolling?? thanks for any help

 

[steelespike]

Re: 1983 force 85 hp

Your fuel consumption seems ok. Im guessing youve got a little fuel leaking somewhere,hose connection,cracked hose, gascap doesnt show when moving fast as fumes disperse faster.Dont know where your senser is ,if under cowl there may be a leak there. Sorry I cant be more specific Im just trying to use a little logic.<br />Good luck, Spike

 

[millerpdt]

Re: 1983 force 85 hp

more info here-the alarm sounds from up near the key/ignition area-maybe a hot engine alarm also?? is trolling with this big a motor something i should not be doing?? maybe using a kicker motor instead?? my wife thinks she is smelling fumes at slow speeds-what about the vents on the tanks?? positions of vents?? wont you smell some fumes due to two stroke engine?? just want to be safe here-we are new to boating-how would i look for leaks around the engine?? thanks

 

[Summer Fun]

Re: 1983 force 85 hp

hi millerpdt i have same motor the buzzer u hear is overheat alarm replace impeller i did no more buzzer thats what i think way577

 

[12Footer]

Re: 1983 force 85 hp

Way is right, I think. These boats did not come with a fume alarm, as most outboards don't.<br />Unless it was installed after the boat was purchased, what you are hearing is the dreaded "WATER TEMP" alarm.<br />It's time to change the impeller,thermostat, and do a compression test. They do not run long after those alarms go off, without doing some perminent damage to the cylinders,pistons,heads ect.<br />The impeller should be changed-out every other season as a precaution that that alarm is never heard.<br />It should be considered a "normal wear" item, like plugs are.<br />I hope you cuaght her in time. Good luck.

 

[millerpdt]

Re: 1983 force 85 hp

this clown i bought it from told me the whole engine was gone through last year!! so much for trusting people-but like i said i only got the alarm when trolling at slow speeds-what am i looking at cost wise for impeller and thermostat?? and should i be trolling with an 85hp motor?? thanks

 

[12Footer]

Re: 1983 force 85 hp

If the previous owner let it sit all year, don't be too worried about being lied to. Sometimes when these motors sit, they tend to form a "shape" the the pump housing ,which is concentric.<br />It will cost about 200buks for the repairs...<br />Or about 30bukz, a shop manual,an average set of tools, and about 2 hours time.<br />It will then take about 1 hour any time in the future to do this same job.<br /><br />Trolling is kind of rough on them. The carbon buils-up rapidy, and the impeller wears out much faster . This is because it is in contact with the pump housing walls all the time,as opposed to high-speed,when the vanes tuck-in, and it acts like a centrifugal pump.<br /><br />So, decarb often,and keep a spare impeller.

 

[millerpdt]

Re: 1983 force 85 hp

thanks 12footer, so now that i have gotten the alarm even at the slow trolling speeds means i should change the impeller?? and is this a motor where i can find a manual?? its an 83 force with chrysler logo-where would i get the manual?? it ran great like i said 42mph.. so i am hoping no engine damage... what do you think??? thanks for the help-i am somewhat mechanically inclined-should i try this or hire it out???