35hp force fuel pump

B

buzzbait68

Recruit
Joined
Sep 2, 2005
Messages
2
I have a 89 35hp force outboard that blew a fuel pump gasket. It looks as though it burnt and warped the fuel pump housing. Why did this happen and is it repairable? after changing the fuel pump gasket ,it will not idle correctly and pops and backfires with no power. do you think this is a fuel problem or something worse? thanks for any help!
 
eurolarva

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: 35hp force fuel pump

Is this fuel pump square or kind of like a figure 8? When you say you replaced the gasket did you also replace the diaphram? The stuff that looks burnt could be broken down rubber. Take the bowl off the carburator and drain the gas from the carb into a glass jar. Is there a bunch of black crap in there? If so you may have to take the carb apart and clean it out. If the fuel pump diaphram disintigrated the majority of it went into the carb. Should also replace all your fuel line while you are at it.
 
roscoe

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,925
Re: 35hp force fuel pump

35hp should be the round/oval two stage pump used on most Force motors of the 80's.
 
B

buzzbait68

Recruit
Joined
Sep 2, 2005
Messages
2
Re: 35hp force fuel pump

It's the figure 8 type. there is no black residue,the diaphram was intact,but the plastic was melted and pitted around the hole. thank-you for your help!
 
eurolarva

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: 35hp force fuel pump

I doubt that fire could have gotten into it without a serious fire onboard. If the casing is warped it probably cant be fixed. Only guess is that somehow too much pressure built up in it which would probably mean one or possibly all three of the fuel valves are toast as well. The valves are replaceable for about 5 bucks each and the valve gaskets are 50 cents each. You can look here for parts to determine what you need to fix it<br /> Fuel pump 35 HP Force <br /><br />Keep an eye out on ebay as well. There is almost always used fuel pumps there.
 
You must log in or register to reply here.
Top