115 merc not starting after warmed up.

[mako1930]

S/N OB286521 Year is 1988. When I start cold I pump the fuel bulb and it starts instantly and runs great. Shut it off after its been run for a while and it will not start unless I pump the fuel bulb till it gets firm. Starts instantly and runs great. I have just install new fuel line and bulb and does not make any difference. Help would be great. Thanks

 

[Barnacle_Bill]

Re: 115 merc not starting after warmed up.

How long has it been since you rebuilt your fuel pump? Sounds like a leaky diaphram.

 

[Laddies]

Re: 115 merc not starting after warmed up.

its more than likely it the ck. valves in the fuel pump so rebuilding will fix the problem

 

[Clams Canino]

Re: 115 merc not starting after warmed up.

Agreed.<br /><br />Also re-start trimmed down (or "in") <br /><br />-W

 

[rockbill823]

Re: 115 merc not starting after warmed up.

I've just began having this problem recently also. Yesterday, I stopped three times and then restarted after about 15 minutes and each time I had to squeeze the ball to get it to restart.

 

[mako1930]

Re: 115 merc not starting after warmed up.

I had the engine in storage and I had never rebuilt the fuel pump. I have owned the engine for about 3 years and it ran great before I stored it. It does it with the engine trimmed down. Is there a fuel pump rebuilding kit available? <br />Thanks

 

[Clams Canino]

Re: 115 merc not starting after warmed up.

Yes the kits are readily available from dealer. Also it's time ot replace the ball as it's checkvalves must be getting soft too.<br /><br />Mako - sounds like you need a carb cleaning.<br /><br />-W