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Old 07-07-2010, 03:01 AM   #1
Join Date: Jul 2010
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Default Very SLOW filling the gas tank (2500SCR)

I have trouble filling the tank past 1 half to 3/4. The gas regurgitates back up. I suspect a fuel vent issue. How do I remove the vent on the outside of the boat? Thought of using something to clear out the vent if clogged. any suggestions?



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Old 07-07-2010, 04:26 AM   #2

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Join Date: Nov 2005
Location: Everett Wa
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Welcome to the zoo...first off....the vent problem is common with most 340 does the same thing....shoots gas about 3ft off the tank inlet....the vent is clear and you can hear it when the gas starts hitting the vent the vent needs to be need to pull the vent hose off the hull vent itself from the need to then run a rod thru the vent ..blow into the tube to see if it vents into the tank....the other thing to watch for is the angle of the boat while filling the tank.....if the bow is up or elevated ...gas will flow to the back of the tank and cause backwash thru the tank inlet....
you need to listen to the tank and vent to hear when the gas is starting to gurgle..then slow the rate of fill down.....
make sure the vent tube is not kinked or's a really simple system and not alot to go bad...only critters building nests into the vent...


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Old 07-10-2010, 12:38 PM   #3

Join Date: Jun 2008
Location: B.C. canada
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Cool vent

I have a bottle that fits over the vent with suction cups it catches the over flow . Pop it off when your done i think I got it from west marine .
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