A few 951 questions

[jwick86]

I have a new 951 motor and installed it. I needed to order a new check valve that goes between the case and the rave solenoid. After a got it I of course tried blowing through it and it was extremely difficult. Yes I was going the right way. My question is how hard should this be to move air through? And where should the check valve be place? Close to the motor, in the middle, or near the solenoid? If this valve is too hard to blow through, won't this create a spike in fuel pressure by blocking or slowing down air flow to the valves and causing that air to go to the pulse line, or your fuel pump?

 

[Chester]

It goes close to the engine. It should be fine. It won't affect the pulse to the carbs if it gets plugged.

Chester

 

[jwick86]

Is there any reason Seadoo puts it close to the engine? Maybe to keep a lengthy charge in the line to solenoid? Also, how hard should it be for air to pass through the check valve? It seems as if mine is extremely hard to move air through and I'm wondering if this is causing a pressure spike in the fuel pump. This all started because I could not get the motor to fire up and upon checking things, after about 5 seconds of cranking I could take the plugs out and dump the fuel into my hand. I have since checked everything in the carbs as I put a jet kit from Bill O'neil at Watercraft magic. My pop off pressure was dead on and no other leaks anywhere in it. He said I may have fixed it by taking it apart and looking for something wrong. Who know's but I know my carbs are not leaking or popping early which led me to ask about the check valve since the nipples for both come out of the same journal in the base. It seems as the air would have to go somewhere and through the pulse line would be the easiest place for it to escape the base. Any thoughts or idea's?

 

[Chester]

You could take that line off and plug the nipple and it STILL won't affect the carbs. If your getting a lot of fuel in the engine, your needles & seats are leaking, no question. Re-check your carbs. Try the leak test on your needles & seats with the carbs assembled.

Chester

 

[jwick86]

I understand if there is fuel pouring into the motor its coming from the needle and seats. Like I said with them assembled, the pop off pressure was 23 lbs and 24 lbs and both re-seated and sealed at 18 lbs. I also did a leak test where I applied about 20 lbs and let them stand for over two minutes and they did not drop at all so I know its not slowly seeping by the oring on the seat.

 

[jwick86]

Has anyone ever checked how hard it is to blow through their check valve for the rave valves? Does it really make a difference where it is between the motor and the solenoid?