Recent content by stout890

So just to update my situation in case it helps someone else. I ended up putting the pump back together without the one way diaphragm and washe and no filters, so that way I had some fuel line to direct the fuel being pumped.. and so that I could hook up my fuel pressure gauge to test the pump...

That's what I said right? Maybe I didn't write it out to well. I said "the air pressure acts upon the fuel pressure regulator" You said "The back side of the fuel pressure regulator diaphragm is exposed to the air pressure and it will maintain the 27psi pressure difference" So 80psi air...

So reading up on another thread that was super informative 951 DI Troubleshooting Seems as though the air pressure acts upon the fuel pressure regulator to to allow the fuel pressure to build above the initial 27psi. That's why you see 27psi with the engine off and 107 when the engine is running.

My 951 DI has orbital fuel injection. And orbital is direct injection into a cylinder as far as I know. Orbital is unique in the fact that it uses an air injector in conjunction with a fuel injector to overcome cylinder compression. RFI And DI are two different systems. As far as the RFI using...

I would think the fuel pressure would be to high if it was the air pressure regulator failing to release excess pressure. From what I know the air pressure acts on the relief valve for the fuel which is set at 27psi so as the compressed air acts on the fuel pressure regulator it increases (equal...

Maybe a bad pressure regulator? The compressor makes quite a bit of pressure well over the 80psi needed but the regulator should dump excess pressure overboard.

Man this was a good read, learned a ton about the orbital fuel system. I know it's an old thread but just had to say this was vary informative.

Iv finally gathered up the stuff to clean the pump. But just wondering now since I took the pump unit apart to remove the hidden filter, do I put it back together to run the pump in solvent or can/should I just run the actual pump by itself? I'm thinking I should run it without filters to allow...

No one wants to chime in on this? There is vary little info about the system online. Would be interesting to hear from a professional Sea doo mech on what they were taught about this system.

I feel like that fuel pump you had to begin with was the stock pump. Other than the numbers it looks exactly the same. The numbers may be lot numbers or batch numbers from manufacturing process. The part number is assigned to the whole assembly not just the electric pump. Here is what my pump...

What's the safest way to wire up the pump so it doesn't make sparks? I'm thinking at least a switch instead of just alligator clips to prevent sparking

Thanks I'm currently changing my in tank filters and going to run the pump in solvent to clean it since it's been sitting for 11 years. And I'll check the voltage when I get it back in the ski.

So Iv been reading 2 conflicting things on here about this pump and orbital fuel injection system. #1 the comon consensus is that the fuel pump needs to produce and does produce 107+ psi. It's seen on the pressure gauge and the manual says that's what it should produce minimum. And that's why...

How much voltage should I see at the pump?

Found Xylene on ebay with no issues shipping to California address from what Iv read it's really close to toluene. I think I'm going to try that.