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Posted

I have a small tear in a air regulator Diaphragm. They are absolute thieves   $210 for a rubber Diaphragm the size of a half dollar.  Not to mention a $100 tool that is necessary to install it without damaging it.   Found the part on ebay, the only option i could find from the dealer was them selling me a $700 complete fuel rail.    

Posted

Tell me about it. 

10 minutes ago, fishinwrench said:

Told ya !   They are some rotten sonsabitches. No nice PC way to say it.  Just be careful of the fuel you or it could cost you a whole lot more to the gas you run thru it or it might cost you a whole lot more. Is this motor a regular Merc are a Yamaha with a black cover saying it is a Mercury. Feel injectors for mercury start at $250 each.

Gotta rape everyone they can to pay off those incoming lawsuits I reckon.

                                                                                       

Posted

My boat was running great the other day and then i stopped and when i tried to move it would idle but would not get on plane just bog down.   So i started tearing things down real slow checking gaskets and O-rings, rebuilt the external fuel pump. Then i opened up the air and fuel regulator to check on those diaphragms ( read a lot online how these are problematic). And sure enough one is messed up. Not sure if this will fix the idle but wont get up on plane problem.   Once i get it back together ill test the air and fuel pressure.  Might be the high pressure fuel pump or the booster pump in the VST

 

What else should i check wrench?  It has good spark, fresh gas, fresh plugs, and fuel filter

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