1986 3 cylinder 30hp misfire/stalls

jon22161

Recruit
Joined
Jun 22, 2009
Messages
1
hi
i'm new to this boating game, i've just bought my first boat and restored it, i bought a second hand yamaha 30hp 3 cylinder, i've had the impellor changed and the gearbox oil, my problem is this;
its a manual start and starts easily and runs fine but when i drop the revs it stalls if its in gear or pops and stops when i knock it out of gear, now this doesnt happen all the time, but it does it always when i'm coming into my mooring, i 'm able to do most things on an engine but i've never messed with a 2 stroke outboard.
i've not done anything at the moment apart from clean the filter, is it worth putting in new spark plugs or do you think this is a fuel problem.
the guy i bought it from used it regulary but did'nt do much maintenance to it.:eek:
any help would be appreciated
 

rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: 1986 3 cylinder 30hp misfire/stalls

if the compression is good and ethanol hasnt eaten up the crank seals clean the carbs and replace the fuel pump.
 
Top