Results 1 to 5 of 5
  1. #1

    seadoo rxt-t engine compression pressure

    Today i check my engine compression pressure, after i test piston (1) is 110psi 115 psi 112psi piston (2) 120psi 125psi 123psi piston (3) 121psi 125psi 120psi , i use this pressure gauge test my friend ski , my friend ski is seadoo rxt 215 2008 , but after test 3 piston is same pressure is 128psi to 130psi, i dont know is my pressure gauge problem, o is my engine problem , is piston problem o is valve no close finsih problem??????

  2. #2
    richrxp's Avatar
    Join Date
    Jun 2006
    2008 rxt-x

    cylinder 1 149 psi
    cylinder 2 154 psi
    cylinder 3 155 psi (near the fueltank is no 3 )

    Compression test was done on a cold engine,tested 3 times to be sure of right numbers.

    74 hrs on the engine.

    Your compression on the first test is a bit low imo,how may hours on the engine?
    You may have to 10 % difference max between the 3 cilinders.

    There is a difference when tested cold or warmed up.
    Last numbers seem ok to me.

  3. #3
    thank for reply, my ski now run 34 hours, but i now understand piston 1 and piston 2,3 diference 10 psi ???

  4. #4
    tweeker's Avatar
    Join Date
    Jul 2007
    Denver NC
    Do a leakdown test and find out what is leaking

  5. #5
    Hello, I am in the process of buying a 2008 seafood rxt x 255, they are doing a compression test on Monday and I have no cause what numbers I should be looking for. If anyone can help out that would be great. Thanks

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. engine internals: boost vs. compression
    By thewhitewonder86 in forum 4-Tec Performance
    Replies: 24
    Last Post: 10-10-2007, 06:58 PM
  2. RECALL: 2007 Seadoo all models Fuel Pressure Relief Valve
    By superman in forum Sea Doo Open Discussion
    Replies: 3
    Last Post: 07-28-2007, 10:51 AM
  3. Proper Engine Compression Testing !!!
    By RX951 in forum Yamaha How To & FAQs
    Replies: 2
    Last Post: 08-20-2006, 06:36 PM
  4. Compression on 4-Tec Supercharged Engine
    By ramnj in forum 4-Tec Performance
    Replies: 5
    Last Post: 04-22-2006, 08:22 PM
    By ABBOTT in forum Yamaha How To & FAQs
    Replies: 0
    Last Post: 02-15-2006, 10:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts