Question about Boating
Just need to know where it is so I can check the choke is working properly. It seems the engine is running with the choke stuck on which is making the engine run on reduced power when accelerating.... I have managed to find the fuel pump which apparently looks similar. Can anyone please help on where to find this?
I have a 150 the choke should be in the same place as mine .......when you are standing on the boat looking at the motor it should be on your left side by the carb's..........should be a round black thing with a little red lever on it
Posted on Jan 08, 2013
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Posted on Jan 02, 2017
recheck float level as well as needle and seat for sticking and or damage, just crack line to bleed air , and eventually it self bleeds anyway... also unless you replaced with new floats check float weight with a float scale to see if floats are saturated or have fuel inside making the heavy and inaccurate ...
Posted on Aug 04, 2009
hi obviously a fuel fault someware / when motors are winterised the fuel system is usualy emptied, this causes gaskets and diaphrams to dry out and split try it with the tank filler off /replace the diaphram in the carb and i am pretty shure that will solve the problem /nb / as this motor has stood for a time and does not do much work /outboards love work check the water pump impellor and put a spoonful of oil in a full tank of gas hope this helps merlin v12
Posted on Aug 29, 2009
It sounds like the manifold vacuum is low. This would mean the engine is getting more air than it needs and can not create the vacuum for fuel draw. When you choke it, the outside air is reduced and the vacuum goes up and more fuel is drawn in enriching the mixture. The raw gas can not atomize without the vacuum. You swing the other way when you dump gas without the choke.
If you can find a vacuum port to attach a vacuum gauge, you turn the airmixture screw until you have the most vacuum(highest) and then turn the mixture screw in until the vacuum just starts to drop. This is the optimum setting. Marine shops also use flow (meter)flaps to balance multiple carbs on a motor like they do on motorcycles.
You could get the timing checked because this will affect vacuum draw too. This site is suppose to have free manuals, but you may have to Browse the internet for other sources.
Let us know how you made out.
Posted on Sep 18, 2009
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