'81 20hp merc No Power

Oatsman

Recruit
Joined
Jul 20, 2002
Messages
1
I have a 1981 Merc 200 (20hp)tiller.When it is in neutral it revs up fine but when I put it in gear it doesn't have any power what so ever.It sounds like it is missing and also VERY throaty.I put new plugs,fuel and a carb kit in it but to no avail I still can't get it to run any better. :confused:
 

Bear

Lieutenant Commander
Joined
Mar 1, 2001
Messages
1,627
Re: '81 20hp merc No Power

Hi Oatsman<br /><br />Try squeeze the primer bulb when you put it in gear. I think it is time for a fuel pump rebuild.<br />The rubber diaphram has a small hole in it. That is bad. The kit is cheap and easy to install.<br /><br />Good luck!
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: '81 20hp merc No Power

Howdy, Oatsman.<br /><br />If squeezing your primer does no good, check for spark. You might be running on one cylinder. :)
 

Bear

Lieutenant Commander
Joined
Mar 1, 2001
Messages
1,627
Re: '81 20hp merc No Power

...and then a compression test :)
 
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