1983 merc 80 hp slight hesitation

[Forceluver]

The motor seems to run great, 150 psi in all cylinders, new fuel pump diaphram and primer bulb. After the motor is warmed up when I come to a stop and proceed to take off it just does nothing, I have to rev it up a bit then put it in forward to go. Kinda like its starving. When It does go, there is a slight sputter in power but takes off.<br /> I'm able to get 40 mph out of it at 5100 rpm's. So I would think the motor is heathy. If anyone has suggestion that will be great. One more thing, does the motor have to be below a certin angle to run, it seems it will not start if I'm pitched to high.

 

[NathanY]

Re: 1983 merc 80 hp slight hesitation

Sounds to me like you maybe just need to have your carbs cleaned. The angle thing is no big deal, every merc I have ever had is like that, I guess that is just a carb thing.

 

[Forceluver]

Re: 1983 merc 80 hp slight hesitation

Its funny cause It almost acts like a switch,<br /> Can I just spray some cleaner in the carbs or do I have to remove everything?

 

[NathanY]

Re: 1983 merc 80 hp slight hesitation

Well it does have a mercury switch, so that it will not run when trimmed all the way up.<br /><br />Spray carb cleaner will do nothing for you, it is best to remove the carbs and disassemble to clean.

 

[Forceluver]

Re: 1983 merc 80 hp slight hesitation

Ok I will do that, Is there only one part that needs adjusting If I do this? It looks to be just the idle mixture screw. If there is another please let me know.<br /><br />Scott