1987, 85 Force fuel problem

Tucker1982

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Jul 24, 2010
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I just purchased my first boat, 1987 Bayliner with a 85 hp Force Motor. We live in Iowa and with all the rain we've had I wasn't able to test drive (too much flooding) at the time of purchase. I was able to start the boat motor with muffs.
I got the boat out on the water last weekend for the first time. The motor starts great has good compression but when I hit the throttle the motor wanted to bog down and eventually would die. Always started and idled great.
during the week I found the fuel inlet on the motor was plugged up with debris. Cleaned this out, replaced squease bulb on fuel line and siphoned out what I could of the fuel and replaced after filtering out any debris in tank. Took it on the water today, ran great out of gear, hole shot was great, high speed for about 5 min. than back to the same as before. Fuel filters are still clean. Any suggestions?
 

my1stboat1

Petty Officer 1st Class
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May 31, 2010
Messages
307
Re: 1987, 85 Force fuel problem

replace the fuel pump diaphram and inspect the check valves
 

cjac2879

Seaman
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Aug 23, 2009
Messages
64
Re: 1987, 85 Force fuel problem

I had almost the same issues as you, and after replacing the fuel lines and fuel pump, i finally took it to the shop, and it turned out the carbs were a mess, and needed cleaning, and my fuel was a mess as well.. So they cleaned and resynced the carbs, new bulb, cleaned out the tank and new gas, and say its all set to go... I will find out this week hopefully
 

Tucker1982

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Re: 1987, 85 Force fuel problem

I ended up taking my boat to a local marina and had the same results, the gas started shalacing and the carbs needed rebuilt and tank needed cleaned. Will try out tomorrow. The owner of the marinia said it runs like a new motor.
 

cjac2879

Seaman
Joined
Aug 23, 2009
Messages
64
Re: 1987, 85 Force fuel problem

ya, mine ran beautifully after the shop did their work, so you should be happy.

Just out our curiousity, what did it end up costing you
 

Tucker1982

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Jul 24, 2010
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Re: 1987, 85 Force fuel problem

Around $800, It does run great now though.
 
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