I'm having issues with my starboard enging on 99 272 Sailfish. It cranks fine then runs rough and dies. I'm thinking the electric fuel primer diaphragm may be bad causing loss of fuel and addition of air in the fuel line. Has anyone had similar issues?
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Sailfish 272 electric fuel primer
- Thread starter Waynesworld
- Start date
no problem
Well-Known Member
I have had 2 fail but never with those symptoms. take both hoses off and temporarily insert a squeeze primer bulb. If the problem goes away the pump was leaking air. http://www.go2marine.com/product.do?no=78146F 6802 seems to be discontinued and replaced by frb-13-2. Hope this helps, good luck.
No Problem, I am planning on trying that this weekend if I can get in the hold to do it. It's a small opening for a big guy. Getting in is not to bad, it's getting out that is the problem. LOL Thanks for the reply.
no problem
Well-Known Member
Just so you don't feel alone in your misery. I had no skin left on my knuckles and bruises across my chest and down the entire length of both arms. :lol: Sore for a week, no kiddin'
ahill
Well-Known Member
BobP
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What you want to try is get a piece of 3/8 inch clear vinyl hose and insert closest to engine and watch fuel flow, it should be solid with zero bubbles.
temporary use only. There are many places air can leak in.
One of the primers was leaking air in and making bubbles, all kind of problems with Johnson 200s, I even changed a fuel pump on motor and it didn't fix it. Green corrosion at one of the brass flare fittings and no smell of gas or a drop leaked.
If concerned with fuel quality, use a separate portable tank with fresh gas in same hose, bypassing boat's fuel system.
I got rid of both primers, squeeze bulbs work fine, just have to walk to stern, no big deal.
If you get bubbles, just have to work backwards to find the source in the chain.
temporary use only. There are many places air can leak in.
One of the primers was leaking air in and making bubbles, all kind of problems with Johnson 200s, I even changed a fuel pump on motor and it didn't fix it. Green corrosion at one of the brass flare fittings and no smell of gas or a drop leaked.
If concerned with fuel quality, use a separate portable tank with fresh gas in same hose, bypassing boat's fuel system.
I got rid of both primers, squeeze bulbs work fine, just have to walk to stern, no big deal.
If you get bubbles, just have to work backwards to find the source in the chain.
Are your motors OX-66's or carbs? I doubt it's the primers letting air in the system. The VST tank or the bowls of the carbs would be able to let the air come to the top. If it's an OX, change ALL the filters (there's a bunch) and clean the O2 sensor then check it. I would also recommend changing the primers to bulbs then give them a squeeze and see if she improves. If it does it's the low pressure pumps.
If it's carbed, it's probably time for a rebuild but check by squeezing the bulb first.
If it's carbed, it's probably time for a rebuild but check by squeezing the bulb first.
BobP
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The motor's own fuel pump may have trouble handling air entrained fuel.
As was the case with the OMC VRO pumps.
Every motor has it's own fuel pump, some have several pumps.
As was the case with the OMC VRO pumps.
Every motor has it's own fuel pump, some have several pumps.
Tucker
GreatGrady Captain
Why in the world do they have an electric fuel primer? Sounds like something else to go wrong. When did we get too lazy to squeeze a primer bulb?
no problem
Well-Known Member
My carbureted 2 stroke yamahas would not start without using the primer. To manually prime I would have to open a hatch each time to get access to the fuel lines. I enjoy the electric primers and they also make handy fuel transfer pumps . It's always a bummer to service a seemingly unnecessary item but when they are working they are most handy. I also added primer bulbs between the primer pumps and the motors so that when in doubt I can prime manually. Without priming my motors absolutely would not think of starting.
My engines are OX-66's. They have always cranked easily and ran great. Usually don't even need to prime them. The pump sounds slow for the starboard engine so that is why I am suspecting it for the problem. Unfortuneately I had some other pressing issues this past weekend so I didn't get to trouble shoot it but it is my plan for this weekend. Will let yall know what I find.
seabob4
Well-Known Member
Tucker said:Why in the world do they have an electric fuel primer? Sounds like something else to go wrong. When did we get too lazy to squeeze a primer bulb?
When I was at Hydra-sports building the first 3000 Vectors, they came standard with the OMC electric fuel primer pumps...bells and whistles, you know...