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Ask Noel Schembri Your Own Question
Noel Schembri
Noel Schembri, Marine Technician
Category: Boat
Satisfied Customers: 1941
Experience:  Advanced technical diploma
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I chage the fuel pump on the 50hp mercury and when i fill the

Customer Question

I chage the fuel pump on the 50hp mercury and when i fill the the prime bulb with fuel it runs out when the engine is running and never fills back up .
Submitted: 8 months ago.
Category: Boat
Expert:  Noel Schembri replied 8 months ago.
Hello my name is ***** ***** I will assist you. When you said you replaced the fuel pump, did you replace the priming bulb? or the diaphragm pump? Noel
Customer: replied 8 months ago.
I changed the diaphragm pump and the priming bulb want stay full during running
Expert:  Noel Schembri replied 8 months ago.
Ok so next thing to check is the vent of the fuel tank as if it is blocked it may lead to this problem. Best and easiest way to check this is to run the boat with the fuel cap open and see if it is ok. If yes then check the vent. Noel
Customer: replied 8 months ago.
most vent are located where on the fuel tank
Expert:  Noel Schembri replied 8 months ago.
Normally next to the filling hose of the tank. If you check on the tank there should be another hose that goes to the side of the boat or to the back. That hose would need to be clear and not free. Noel

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