BALL WILL NOT GET HARD/ AIR HEARD

[fishingfolks]

We have a 2004 Nissan 8 hp outboard engine...<br />It came with a 3.5 gallon tank. <br />Then we got a 6 gallon tank...<br />Both have this same problem...<br />It will not prime and make the ball hard...<br />When you do prime it, you can hear the air being drawn from the tank vent. The vent is open...<br /><br />Both tanks are using the same fitting which came with the engine...<br /><br />It allows it to run at a very slow troll<br />and there is no red light on but when you step the engine up it dies and the red light does come on at this time.<br />Sometimes it dies after a few hours of trolling with no apparent cause...<br />The red light is not on when we restart the engine.<br />You can get it restarted after a few attempts<br />but the ball never primes hard.<br /><br />We have not replaced fuel lines or ball because we hear the air sucking sound from the tank?<br /><br />We wonder if this is a fuel tank fitting causing this problem?<br /><br />Thanks, fishingfolks

 

[TOHATSU GURU]

Re: BALL WILL NOT GET HARD/ AIR HEARD

Since the ball is not getting hard its a given that you have an airleak in the fuel system. Usually its a bad checkvalve inside the primebulb itself. But it could be a pinhole in the fuel line, bad fuel fitting or a bad fuel pump diaphragm.