1988 85hp force dies out on decell.

[willthrill]

my 1988 85hp force dies out when I slow down from w.o.t. Can anyone help?

 

[Dave K.]

Re: 1988 85hp force dies out on decell.

had a silimlar problem a couple of years ago. mine died out when i pulled back to nuetral. i adjusted the carbs, then cleaned them..helped a lot. since then, i've run stabile through for winterizing & ran seafoam earlier this year. motor runs much better, rarely stalls, forward, nuetral, reverse she keeps going..

 

[gregmsr]

Re: 1988 85hp force dies out on decell.

Check the spark plugs. Clean or replace them REGULARLY!! (like every other run)

This really helped mine.

 

[Jack Daniels]

Re: 1988 85hp force dies out on decell.

When replacing these types of spark plugs do they need to be gapped? Thanks

 

[Dave K.]

Re: 1988 85hp force dies out on decell.

NO - factory calls for surface gap plugs, not electrodes. i've been told & believe that electrode plugs could burn a hole in the piston.

 

[john from md]

Re: 1988 85hp force dies out on decell.

Feel the ball after the engine shuts down. If it is soft, there is a good chance that the check valves are sticking in the fuel pump. The symptoms for this are that the engine runs good at high power but will shutdown when you throttle back. It will then start up immediatley but then die out. If you keep pumping the ball the engine will keep running.

Regards,

John

 

[willthrill]

Re: 1988 85hp force dies out on decell.

can't find any new check valves for sale. can I repair the old one? and how if can.

 

[john from md]

Re: 1988 85hp force dies out on decell.

http://www.crowleymarine.com/mercury_parts/1328/8.cfm 5.50 each and you need three of them.

No they cannot be rebuilt. You have to destroy the one in the blind hole just to get it out.

Regards,

John

 

[willthrill]

Re: 1988 85hp force dies out on decell.

Thanks john!!! Just order the parts and I'll let you know the results when finish

 

[john from md]

Re: 1988 85hp force dies out on decell.

I suggest that you use an "Easy Out" made for thin wall tubing to get the valve out of the blind hole. These have four straight flutes instead of the usual spiral flutes. I would also use a socket to press or tap in the new valves.

Replacing these solved all my engine stalling and shutting off problems. It is so reliable now, I don't carry my emergency kicker any more.

Good luck,

John

 

[willthrill]

Re: 1988 85hp force dies out on decell.

john,the diagram only shows one valve. will i see all three when i take apart?

 

[john from md]

Re: 1988 85hp force dies out on decell.

Yes, two are pressed in, one can be removed with a screwdriver.

Regards,

John