07-10-2011, 10:34 PM #1
is there a good reason they dont open?
Just wondering why my rave valves open sometimes and others dont open at all.. i cleaned the snot out of them and i check them all the time after a ride.. they are free moving and not completely gummed up.. yet they barely open half the time.. the motor just hangs out at 6500rpm all day long.. once in awhile the raves actually open and the motor sings to 7000rpm.
is there a reason they dont always open when they are supposed too ?
07-10-2011, 11:49 PM #2
- Join Date
- Mar 2011
There are a couple of possibilities
Caps (Cracked and Leaking)
Check Valve from the crankcase
Possibly the springs inside the valve
One used ski I bought used actually had the top springs missing
They make rebuild kits for them, might give them a shot.
07-11-2011, 12:30 AM #3
Yea,check the little "oneway" check valve from the crankcase
07-11-2011, 05:25 AM #4
+1....also have you gone through the fuel system and the carbs? just checking.
07-11-2011, 06:39 AM #5
07-11-2011, 02:08 PM #6
Its on the PTO end under the carbs behind the starter, its there. its a PITA to get to unless the carbs are off.
07-11-2011, 10:53 PM #7
- Join Date
- Jul 2009
try to ride it and then cavitate the prop to unload the engine, hop the ski lean it to one side hit a big wake. anything to get the intake out of the water to let the engine rev. see if it takes off and holds rpm. only getting to 6500 rpm and holding there seems another issue other than rave valves. what prop, is water injection in the pipe working? ect. also what motor is it 787 or 951? asuming 951 since you mentioned rave valve solenoid. could do the drill modification and make them work like the 800 rave valves off exhaust gas pressure instead of crank case pressure.
07-12-2011, 12:02 AM #8
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By RichieFZR in forum Yamaha PWC Performance (4-stroke)Replies: 17Last Post: 05-17-2011, 08:56 PM
By johnboy999 in forum Honda How To & FAQsReplies: 0Last Post: 05-22-2010, 06:10 PM
By mjh3ides in forum Yamaha PWC Performance (4-stroke)Replies: 30Last Post: 09-24-2009, 10:24 AM
By racerxxx in forum Sea Doo ClassifiedsReplies: 0Last Post: 07-20-2008, 12:21 PM
By Pettee in forum Sea Doo Open DiscussionReplies: 9Last Post: 01-04-2006, 09:38 PM