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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29100
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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Beta bv3300 75hp kubota won't pump any diesel

Resolved Question:

beta bv3300 75hp kubota won't pump any diesel
Submitted: 2 years ago.
Category: Small Engine
Expert:  Curtis B. replied 2 years ago.
Do you have fuel to the injection pump from the transfer pump? If so,where is the fuel solenoid? It has to open the fuel passage to the injectors. It requires battery voltage at all times the switch is on. Is it opening?
Customer: replied 2 years ago.

it is a mechanical pump on a camshaft, no solenoid.

diesel getting to banjo bolt on pump

Customer: replied 2 years ago.

marine engines are mechanical, no solenoid

Expert:  Curtis B. replied 2 years ago.
How is engine killed? With switch or with pull cable or throttle?
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Expert:  Curtis B. replied 2 years ago.
No fuel to the injectors is a pump that is in no fuel position.
Customer: replied 2 years ago.

The engine is killed by push button. Found solenoid and wired it to battery. It got extremely hot so I removed it and kept feed open with cable tie. Still no diesel going through pump. Sorry for delay but have been on boat all evening.

Expert:  Curtis B. replied 2 years ago.
Feel for the linkage that the solenoid pushs against, it has to move with the solenoid action. If it sticks, you get no fuel. Push on the linkage, it should spring back! If it is stuck, there is your problem.
Customer: replied 2 years ago.

Thanks for your reply. The linkage is not sticking I was wondering if it might possibly be the camshaft?

Expert:  Curtis B. replied 2 years ago.
Are the pump bodies moving? Usually the pump sticks in the no fuel position. But the camshaft for it can break!
Customer: replied 2 years ago.

if you mean the 4 small pistons, no they don't seem to be moving

Expert:  Curtis B. replied 2 years ago.
the pistons are moved by the fuel camshaft, and have rollers that go against the cam.
Expert:  Curtis B. replied 2 years ago.

You can't see the rollers or cam without lifting the pump out. The upper parts do not move.

Expert:  Curtis B. replied 2 years ago.
You can't see the rollers or cam without lifting the pump out. The upper parts do not move.
Customer: replied 2 years ago.

thanks for that, i will have to take pump out again tomorrow

Expert:  Curtis B. replied 2 years ago.
Ok, thanks.
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Customer: replied 2 years ago.

hi, had a mechanic look at the pump before we removed it,

the solenoid was working but the rail was not returning so the diesel was not getting thru the pump,

thanks for ur help.

Expert:  Curtis B. replied 2 years ago.
Thanks for the reply!