Yamaha 150 HPDI fuel question.

[Hollywoodfish]

I have twin 150 HPDI's (2001 models) The fuel flow gauge is not giving me a correct reading. While trolling it fluctuates from around 3 to 18 GPH, also the fuel burned is off to. I cant find the part # for the little meter that measures the fuel flow. I have separate ones for each motor mounted after the water separators. Could that be the issue? I am getting ready to replace the fuel lines, I fugured on replacing those while Im at it.

[cousinabe]

http://www.**********/parts/search/Ya...202/parts.html

part# 6y5-85752-01.

you could try swapping them to isolate the issue.

[Hollywoodfish]

I don't think that swaping them out will help. They both go to one gauge, and I would not know where the problem is. I didn't realize that this part was that expensive, but I guess that anything that says Yamaha on it...... You get what I'm saying. Well, I am trying to figure out if its the gauge or one or both fuel meters. They are severely corroded.

[rodbolt]

how many tiny little phillips head screws are on each flow sensor on the cap that the wires enter ?

[cousinabe]

If it's three, you need to get em replaced with the four screw model. should be free from your dealer.

I'm assuming this because I just called Yamaha Cust service to check on tech bulletins for my motors... I still have to check mine too.

[rodbolt]

if there are 3 your local dealer will replace them free under a recall program.
thats why I asked.

[Hollywoodfish]

I just got out the mirror and checked. They have 4 screws holding the plate on the bottom. How often do these go bad? I guess that it could also be the gauge that is going bad?

[bgfishinphil]

i have twin yamaha 15o hpdi they have been setting for about a year they want start i misted them and they fired ok is there a cheap fix to cleaning the intakes im sure they are probably gummed up