I appreciate the help I am always open to someone helping me and I like to help others. I do enjoy a good challenge and this has been one for me.
When I first rebuilt the engine it ran very well and idled very well and had a ton of power. Right now it feels to have half power like its missing a cylinder. The engine has 2 carbs one for each cylinder.
The carbs have a linkage that clips onto the side of them that open the butterflies I did not alter their sync because she was running so well I just un-clipped one carb when removing and installing them. I had adjusted their low speed screws both were set to 1 1/2 turns out while she was idling perfect from factory they were 1 1/4 out but she ran best at 1 1/2 out on both and spark plugs looked good after long idle periods on pontoon. I even turned the idle screw that touches the bottom butterfly all the way till it wasn’t touching the bottom butterfly screw meaning both butterflies were completely shut and she was still idling fantastic I then turned the screw to where it was barely making contact with the butterfly acting as a stop and left it. My buddy and his girlfriend were coming to visit I had started the pontoon boat several times that week to make sure it was ready and within 60 seconds she was idling as she should. When he arrived the day we were going boating he helped me put the insulation in the hood and the new hood decals on. We proceeded to the boat put the cover back on and tried starting the boat and that is when the problem occurred and the boat required a partial choke and the throttle lever to be pulled up a bit to idle. I have sync’d carbs before on my buddies MGB and my motorcycles etc I have a good ear for that stuff and have been pretty successful at it. I will read the manual today on that and investigate it when I reassemble the new reed valves. I will also switch the carbs at that point if motor still doesn’t run right to see if the problem switches cylinders right now it is the top cylinder with issue. I have the carbs and reed assy off right now waiting on parts etc.
What I think is happening and happened to the engine is the reed valve cage screw/s was hit by the rod and did damage to it. 3 of the 6 reeds for that cylinder (top cylinder) have light coming through them I think when the piston is going in direction of the reeds it is drawing some water from the exhaust ports (since reeds are not closing fully) and fuel but a tad of water also making that cylinder not hit as it should. That might also explain how the cylinder is getting washed and possibly why I am having to partially choke it to give that cylinder a bit more fuel since it isn’t drawing fuel as it should. Do you think this could be my problem?
Thanks,
Joe
ps Sometimes a pic helps as you can see it took a nasty hit. These are the reeds and manifold I got coming to put back on. I also have new gaskets coming.
http://www.ebay.com/itm/311280859355?_t … EBIDX%3AIT
With new screws in the reeds and cage the motor did run a lot better so I think this should help a lot sure can’t hurt.
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