RAV Solenoid questions

[laxexquis]

Hi,

I have a 2002 GTX RFI and while lifting the engine out I broke one of the little plastic connecters on the side of the solenoid valve which the small black hose mounts on. I ended up trying to glue it on with hot glue surrounding the hose and just trying to make it stick on. I am just wondering if it is working and what to look for in the way it drives to see if it is working.

My ski is running a little rough and if you let it sit for a minute it stalls, are these signs that that hose is not connected properly?

One other thing while I am posting, do these skis have fuel filters? If so where is it located and is it hard to do?

John

 

[Bills86e]

yes, and yes. Go to the HOW-TO section on raves, read and then clean your R.A.V.E's.
If the RAVE valves are dirty it will not rev up correctly and could be causing your problem. On 787 engines the red adjuster knob should be flush with the top of the cover, for 951 engines it should be fully tightened in the cover bore. at that setting the pipe is dried out somewhat allowing the engine to rev higher.Changing the adjustment will only change the amount of water that is injected into the headpipe. Having said that, if you were to actually completely pinch off the water line from the regulator to the headpipe, the exhaust chamber would overheat and melt the hoses. That's about as catastrophic as it would get. The engine itself (or the cooling to the engine) would not be affected at all.
pressure line runs from....... pulse fitting under carbs to check valve to rave solenoid, air pressure operated rave solenoid actuates raves around 4400ish rpm by opening pressure to diaphragm. closes by solenoid opening to atmosphere on most all 951's. remove a rave, it should move freely in housing. if not, inspect and clean. the shop manual has some spew about no parts wearing, but the diaphragm can tear, piston shaft can wear and not seal on o-ring causing leak/black oily goo..... it takes very little pressure to actuate valves, pull line and pressurize with pop off or blow hard. Clean any accumulation of sand out of the small hose going to pipe belly & make sure there is no blockage in the fitting with A wire or pointed tool.
It works by exhaust pressure. When rpms get up, pressure builds up, inflates the bellows, opening the RAVE valve, and allowing more power due to opening up the size of the exhaust port.


Yes, one is on the bottom of your fuel module in the gas tank, the other is on the bottom of your fuel pump thats inside your fuel module. RFI's do not like any water in the system at all.
Open the hatch and undo the tank straps and pull tank forward, but be careful to not stretch your oil tank lines. eight fasteners surrond the fuel module. drain & swab clean your tank also.

 

[laxexquis]

yes, and yes. Go to the HOW-TO section on raves, read and then clean your R.A.V.E's.
If the RAVE valves are dirty it will not rev up correctly and could be causing your problem. On 787 engines the red adjuster knob should be flush with the top of the cover, for 951 engines it should be fully tightened in the cover bore. at that setting the pipe is dried out somewhat allowing the engine to rev higher.Changing the adjustment will only change the amount of water that is injected into the headpipe. Having said that, if you were to actually completely pinch off the water line from the regulator to the headpipe, the exhaust chamber would overheat and melt the hoses. That's about as catastrophic as it would get. The engine itself (or the cooling to the engine) would not be affected at all.
pressure line runs from....... pulse fitting under carbs to check valve to rave solenoid, air pressure operated rave solenoid actuates raves around 4400ish rpm by opening pressure to diaphragm. closes by solenoid opening to atmosphere on most all 951's. remove a rave, it should move freely in housing. if not, inspect and clean. the shop manual has some spew about no parts wearing, but the diaphragm can tear, piston shaft can wear and not seal on o-ring causing leak/black oily goo..... it takes very little pressure to actuate valves, pull line and pressurize with pop off or blow hard. Clean any accumulation of sand out of the small hose going to pipe belly & make sure there is no blockage in the fitting with A wire or pointed tool.
It works by exhaust pressure. When rpms get up, pressure builds up, inflates the bellows, opening the RAVE valve, and allowing more power due to opening up the size of the exhaust port.


Yes, one is on the bottom of your fuel module in the gas tank, the other is on the bottom of your fuel pump thats inside your fuel module. RFI's do not like any water in the system at all.
Open the hatch and undo the tank straps and pull tank forward, but be careful to not stretch your oil tank lines. eight fasteners surrond the fuel module. drain & swab clean your tank also.

Thank you for the detailed description of the RAVEs. Is tying the ski up, putting it in neutral, and taking it up to above 4400rpm with the seat off a good way to see if the RAVEs are functioning (look to see if the red cylinder rises up)?
My ski only has a little bit more then 60 hours on it, how ever it is 9 years old. While cleaning the RAVEs exactly what gaskets and parts do you recommend me replacing?

As far as the fuel filters, I have done some research, and it seems that these are not serviceable and the RFIs don't have fuel filter that need to be replaced? How does it handle water? Does it have an automatic separator, or is there a place where I must drain the water?

Other then this, at 60 hours what other maintenance do you recommend I do? I just did the spark plugs, and looked in the manual for maintenance, and the chart is really unclear to me, so a straight forward recommendation on what really should be done would be great.

thanks again,

John

 

[laxexquis]

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