98 mercury troubles

[Seth]

Dad's been having trouble with his motor for a while now. He had the carb's rebuilt and cleaned and also replaced his fuel tank and houses with new parts. Yesterday he took it out fishing for the first time since getting this done. The motor fired up good at first, but wanted to die out when he would give it throttle so he had to choke it. Well after he was done fishing for the night, he came back but had trouble getting it to start and keeping the motor running. Now this morning he hooked the muffs to it and it won't even try to start.

This is the same trouble had before he had the carbs rebuilt and replaced the fuel stuff. He's had it at two different mechanics and they still haven't gotten the issue resolved and he's getting very disgruntled with his motor.

Any idea's what the problem could be?

 

[BassAssassin]

My 84 Mercury 25hp XD had the same problem once. I disassembled carb and the fuel pump diaphram was about shot. I refurbished the carb with new gaskets and seal and a away i went. no more problem. Just make sure the all the orifices in the carb are cleared with compressed air

 

[crazymanme2]

You have to make sure it is a fuel issue & not an electrical one.Have a little pre-mix in a squirt bottle & give it a shot when it doesn't start,see what happens.Make sure it has a strong spark also.

 

[Seth]

Dad told me yesterday that the motor fired up and ran fine with the muffs on. Does that narrow down the issue any for you guys?

 

[stevewit34]

i had the same trouble this spring with my 25 merc believe it or not it was loose hoseclamp... causing all the trouble...

 

[Loggerhead Mike]

Dad told me yesterday that the motor fired up and ran fine with the muffs on. Does that narrow down the issue any for you guys?

the motor may have to be under a load to duplicate the problem