Help with 86 merc 20 hp

Freeman91

Recruit
Joined
Sep 4, 2018
Messages
5
I'm having a problem with the above motor. Last week I pulled it out of storage after 8yrs. I realized I left fuel in it during that time I cleaned it out put in fresh fuel and it started and pumped water after only 3 pulls. Took it out last weekend where it ran rough idle but good above that on the 2nd day it ran worse as wants to stall randomly it was suggested by the dealer to run some cleaner through it but to no avail. Sputters and misses from idle to half throttle Is a carb kit in order or is it an electrical problem. Any ideas anyone
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
51,010
welcome aboard

old fuel always is a fuel system issue.

you cant just drain it and run it. you gotta clean it.

also, you may want to put in an impeller
 

Freeman91

Recruit
Joined
Sep 4, 2018
Messages
5
Thank you, I am defiantly putting a new impeller in tomorrow. And will pick up the kit and clean it thoroughly
 
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