seadoo xp 99 rpm missing

[KEVIN]

i had the same problem on my 2000 XP and the vacuum hose that went from the Rave solenoid to underneath the block was disconnected, so the rave's were not working. Once i put that back on, it ran great.

[jedw79]

could this be a high speed check valve problem?

[mad mike]

I checkt the raves and the raves are good I think there is a problem whith the vacuum hose it is not disconnected but I think a crack in the hose somewhere or so ?
jedw79 what high speed check valve do you meen?

thanx again for al your time guys

**** need to build my xp 2000 engine fast so I can ride

[jedw79]

I'm talking about the clear plastic check valve that goes on the valve body assembly. Just a thought.

[mad mike]

whow euhhh.... can you help me? I realy downt know what the translation in dutch is sorry

[Bill O'Neal]

If the hose is cracked you probably have siezed the rear piston. Check the compression of the two clyinders and compare the readings. They should be equal.

[mad mike]

the pistons are 3 times siezed before I had the ski I have exchanged the ski the old owner has bought a new 2001 xp from me so I need to sel the ski now bot I can't sell it like dis.
tomorrow I wil check the hose thats the last thing I know to check
than I burn the #$^%!!@ ski

[Edwin]

What are the specifications of the car on a xp 99.
Some one said 1½ other said 1¼. and could this be the problem.

[Bill O'Neal]

If you are asking where to set the LOW speed adjusters, it is between 1.25 and 1.50 turns out. Neither setting should cause a siezure.

[mad mike]

ok thanks, you se edwin I whas wright hahahaha
( edwin is my boss )

[mad mike]

Re: seadoo xp 99 rpm missing

still not working good the **** ski i have don a compression test the front cilinder 9.8 bar and the rear 10.2 bar
could that be the problem I have dun a compression test on my 2000 ski that engine is also new and it had 12 bar on 2 cilinders
when I give full trothle the rpm wil com slow down maybe some false air?????

[Bill O'Neal2]

Re: seadoo xp 99 rpm missing

I'm just a dumb SD mechanic. In America, a bar is a place we go to drink beer after work. Can you convert that to PSI for me ?

[Technical Support]

Re: seadoo xp 99 rpm missing

1 BAR ~ 15 psi

9.8-10.2 ~ 147-153psi
12 ~ 180psi

[Bill O'Neal2]

Re: seadoo xp 99 rpm missing

Well, that does not make sense either. Why is he reading 12 bars on his other motor? Is it modified with a high compression head? Or is his guage that far off, meaning at 10 bars he is way low on the compression?

[mad mike]

Re: seadoo xp 99 rpm missing

now the ski is not tuned and al the engines I build the comp is about 12 bars
whats the normal comp of a new engine?
isn't 10 bars low?

ps a bar in the netherlands is also a nice place to ghet drunk hhahahaha