2009 Yamaha F250BTXR Fuel Pressure Issue - Need help!

bellevie

Recruit
Joined
Nov 16, 2008
Messages
2
Hello THT team,

I need some feedback on this as I cannot get to the bottom of the issue.. nor can my mechanic.

I am having an issue with my 2009 Yamaha 250HP Four Stroke since last fall. I cannot get it above 1800 RPM with out it puttering out. If I have a second person on the boat with me and my guest continues to squeeze the primer bulb, the motor will keep running.

Work we have performed thus far ...

- installed new fuel pump .... low pressure fill pump
- disassembled and re built VST tank And high pressure pump

Then we ran on separate tank bypassed pretty much everything. Hooked direct to hose on the motor. No issue.

- installed new anti siphon ball fitting, thought ball was getting stuck
- installed new "F" filter
- installed new fuel pressure regulator

We pretty much rebuilt the entire fuel system within the motor. It is simply not getting enough fuel. Again, squeeze the bulb as it’s in gear it will run. At 1800 it conks out.

has anybody had this issue ? Any advice for me?

thank you in advance.
 
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