Terrible vacation with my doo

[jammin777]

what is the best way to ck the rave pulse line?

 

[jammin777]

the rave are staying open-up not running, i also disconnected the line from rave to solenoid

 

[jammin777]

one thing i need to know is if i have the vacume and pulse line in the right port on the rave solenoid as who knows what the po did. is there a diagram that shows the correct locations?

 

[68ragtop]

are your springs for the raves between the plastic cap & the stem nut? Any chance they ended up underneath the stem nut?

The valves really shouldn't pop up when you push them down. Just went & checked one of my skis.
Mine stay down, pop up at 5K ish RPM & then drop back down under their own weight.

 

[jammin777]

they are on top of the stem nut , between the stem nut and red rave cap

 

[jammin777]

theres only one spring per rave right? mine with the caps and springs off are all the way up

 

[68ragtop]

So with the caps & springs removed can you pull them up, then push them back down? Then with them down, start the ski, they should stay down until you hit that 5K mark. ITs ok to do this with the caps & springs removed. not going to hurt anything at all.

 

[jammin777]

but they stay up with the caps off, weird not running

 

[68ragtop]

theres only one spring per rave right? mine with the caps and springs off are all the way up

Spin one of the stem caps off with a 10mm wrench Does this allow the other one go down? might just be air trapped in the air lines. the valve will not fall into the engine. just don't over tighten the cap when you put it back on.

 

[jammin777]

theres also a compression spring under the bellows as per manual

 

[68ragtop]

theres also a compression spring under the bellows as per manual on the rfi

I'll look that up. I haven't seen that before. I'll bet its because the amount of air pressure from the case pulse isn't quite enough to lift the valve. is the top spring strong enough to push it down? In other words, do you feel the valve is being pushed down when the cap is on?

 

[68ragtop]

Aaahhh, I see the internal spring now. What happens if you hold it down with just enough finger pressure & then start it up to see if they try to open? The pressure shouldn't change running or not. until the solenoid opens at 5K

 

[jammin777]

ok this is weird the rave has a compression spring on the rave stem under the bellows as per manual hence is why the rave are open -up when the rave caps. heres the kicker, ready? when i place the spring between the rave cap and bellows nut it will not close the rave! wth?

 

[68ragtop]

ok this is weird the rave has a compression spring on the rave stem under the bellows as per manual hence is why the rave are open -up when the rave caps. heres the kicker, ready? when i place the spring between the rave cap and bellows nut it will not close the rave! wth?

So the spring under the bellows is stronger than the spring under the top cap? I would think it should be the other way around.

 

[jammin777]

Aaahhh, I see the internal spring now. What happens if you hold it down with just enough finger pressure & then start it up to see if they try to open? The pressure shouldn't change running or not. until the solenoid opens at 5K

ok so i held both rave down with my fingers and fired her up no difference but when i blip the throttle above 5k i can feel it wanting to open against my fingers. wow is this my problem rave are open all the time? if so how do i fix this? this is weird and i know i have the raves put together right including the compression springs.

 

[68ragtop]

ok so i held both rave down with my fingers and fired her up no difference but when i blip the throttle above 5k i can feel it wanting to open against my fingers. wow is this my problem rave are open all the time? if so how do i fix this? this is weird and i know i have the raves put together right including the compression springs.

what you are feeling sounds correct. When you drop back below 5K after your throttle blip, the pressure passes correct? IF so, thats all good. But, that top spring definitely should be able to close the valves when below 5K, or not running at all when its all back together.

 

[jammin777]

as per manual rave valve in rave casing the oring then compression spring, bellows spring and cap im sure i have it that way assuming i have it right which i will check btw what is going on with my raves? i re kitted them last winter.

 

[68ragtop]

as per manual rave valve in rave casing the oring then compression spring, bellows spring and cap im sure i have it that way assuming i have it right which i will check btw what is going on with my raves? i re kitted them last winter.

I hoping with every finger crossed that you have the wrong springs.......

 

[jammin777]

what you are feeling sounds correct. When you drop back below 5K after your throttle blip, the pressure passes correct? IF so, thats all good. But, that top spring definitely should be able to close the valves when below 5K, or not running at all when its all back tougher.

yes that is correct they release at idle i wonder what up with my upper springs? i didnt replace those. not strong enough to close the rave is crazy. is this the cause of my bog?

 

[jammin777]

what you are feeling sounds correct. When you drop back below 5K after your throttle blip, the pressure passes correct? IF so, thats all good. But, that top spring definitely should be able to close the valves when below 5K, or not running at all when its all back tougher.

double post....

 

[jammin777]

i even screwed the red caps all the way in and still doesn't close the raves!
man this has got to be the problem too much exhaust escaping at lower rpms causing the dreadfull bog

 

[68ragtop]

i even screwed the red caps all the way in and still doesn't close the raves!

You may have found the culprit. They need to be closed at all times except over 5K
I have no experience with the RFI to say from experience, but I would pull it apart & compare the springs. Any chance they could have been reversed, packaged wrong, etc?

The valves have a lip on them, so you can take it apart without removing the whole thing. the valve will stay in place & not fall into the engine.

 

[jammin777]

if i remember right the inner springs are weaker that the uppers. i reused the old springs but rplace the seals and bellow so who know what the PO did to this ski but am excited that we may have found the problem. i dont know whats upo with the springs but i think the only way to find out it to buy new ones, but i dont see listings for the inner compression springs just new rave caps with the upper spring.

 

[68ragtop]

Also, before you pull it apart, remove the air line going to the valve. just to make sure your not fighting air pressure. I don't it should be tho, I believe the solenoid dumps the back pressure.

 

[jammin777]

Also, before you pull it apart, remove the air line going to the valve. just to make sure your not fighting air pressure. I don't it should be tho, I believe the solenoid dumps the back pressure.

yep tried removing the hoses no difference