1983 john. 7.5 sailmaster fuel problem?

santana21

Seaman Apprentice
Joined
Aug 23, 2004
Messages
32
I have an 83 Johnson 7.5 J8SRLCTA. <br /><br />When running the motor to push my sailboat, 3500#s, in idle or low throttle settings it works just fine and the bulb in the fuel line stays full and firm.<br /><br />When running at WOT or a little less the engine will die and the fuel bulb is deflated and won't pump back up.<br /><br />The vent on the tank is open. The tank is new, 6 gal. The fuel line and fittings are new. <br /><br />The only way I can make the fuel bulb reinflate is to unhook the line from the engine and rehook very slowly letting air into the bulb. I can then pump it up and go. If I periodcally unhook/rehook while running I am fine.<br /><br />The tank is higher than the motor when runnig but the line has to go over the transom of the boat and down to the motor. Am I starving the motor of fuel by the up and over of the line, or is it some other problem?<br /><br />Motor sat for about 4 years without running before I purchased it and cleaned it up and went over it. Overall, nice running motor and no other problems.<br /><br />Jim
 

Joey One

Petty Officer 2nd Class
Joined
Mar 8, 2005
Messages
124
Re: 1983 john. 7.5 sailmaster fuel problem?

Hi Jim,<br />I have a E8SRLCTA. My first guess is that the bulb is installed backwards, The arrow is to point to the motor. Also point the arrow up when pumping. Also you will always have trouble with a Temco bulb: get an OMC.
 
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