mercdaddie
Recruit
- Joined
- Apr 6, 2005
- Messages
- 4
Hi i am new to the whole outboard machanics thing, also new to the forum, i have a 1974 Mercury 650 thunderbold, 3 cyl. It will crank with the first key turn very easily, and idle ok for about 30 seconds and will seem to hicup and die down some times quiting and others it will jump back up to idle speed, when i try to give it any power sometimes it will rev others it will just die, almost like choking out, i thought it might have had some thing to do with the vent being closed, but i opened it the next day and tried it again. same thing, i am thinking it may be a fuel pump problem, i have a new gas tank so its not the vent, when i pump the primer bulb till it gets hard gas drips out of the carbs(2 carbs), i checked the spark plugs and they seem to have a bit of oil on them but it still idles fine, also the cracker i bought the motor from left a bold out of the head where the spark plugs are located and water was coming out, i fixed that thinking that water was getting in the cylinders but this still didnt fix my problem, sorry about the long post, but i have one more thing, it seems this outboard may have had a power tilt/trim sys. on it b/c it doesnt have a reverse locking mechanism on it, i have a safety chain rig up in there for now, but does any body have any other suggestions? i have a 1971 4 cyl merc same hp, with the reverse lock on it, how hard would a swap be?<br /><br />once again sorry for such a long post, any help would be appreciated, plan on doing a fuel pump gasket replacment soon, any one know the part number for the fuel pump gaskets and the carb rebuilt kit or gasket kit? the fuel pump looks kinda like a triangle type shape,<br /><br />thanks again guys<br />mercdaddie