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Troubleshooting Fuel Line

mooseo I'm looking for help troubleshooting my fuel line. I am getting some air into it somewhere.

My setup is this: a 90hp johnson as my main motor and a 9hp auxillary motor. I run the fuel line from the tank to a Racor filter and then 2 lines come
2002-05-26
pthein I would change the end where it plugs into the motor as well as all the fuel lines, new hose clamps (double if possible) and a new fuel filter. You might also want to change the motor side fitting where the fuel line plugs in as well. These connections are notorious for leaking. 2002-05-26
MGuckin I agree with pthein. Change everything. However, if you use hose clamps, be very carefull. Most of the fittings are plastic and will crack easy. That's why OMC uses a type of wire tie instead of a clamp.
Sounds like you may have more than 1 problem. Isolate and work on your main motor first. Make sure your filter is clean. Make sure bulb gets hard and stays that way. Excess oil from pre-mix should burn out or blow out after a bit.
2002-05-26
mooseo When you say changing the end at the motor, do you mean the little plastic part that goes through the case?

Thanks a lot for the warning about hose clamps... I'm sure I would have cranked it too hard. Any way to know how tight is right?
2002-05-26
pthein the advantage to the plastic hose clamp is it is designed to clamp evenly around the entire circumference. If you look at a metal hose clamp you will notice an area under the screw that doesnt clamp evenly. As far as how tight - I have always tightened just until the clamp was slightly pulled into the rubber but not bulging around the edges. 2002-05-30
Bear You'll need a three way fuel tap. The running engine will draw fuel from the other engines floatbowl until it is dry. Then it will suck air.

/Bear
2002-05-31
oldboat1 As to the running problems with the kicker, it's an old song but I suggest using fresh gas and oil as a first step. I think you referred to use of a reserve tank -- I'm thinking that might be stale gas.

If you have the room, it might be preferable to run the auxiliary off its own tank. That way you can take care of the other fuel delivery problems, as well as better insure that the gas for the kicker will be fresh.
2002-05-31
russthemuss Hi Mooseo,
If your running one of those Racor filters that has the water trap on the bottem then the filter above,then the housing, and the bolt thru the middle.THROW IT OUT. (buy the new style) I have replaced more of these in the marine industry then i can count!!!
2002-06-01

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