pxctoday

» Log in

User Name:

Password:

Not a member yet?
Register Now!

» Find OEM Parts

» Jobs

» wallpapers

Results 1 to 4 of 4
  1. #1
    PWCToday Newbie
    Join Date
    Aug 2015
    Location
    Houston
    Posts
    8

    1993 Waverunner 3 650 compression numbers high?

    This is in a Whaler Rage. I think i have a carb issue. sometimes it wont get up on plane (3times out) and sometimes it bogs at about half throttle and if you go to full it will die, but once it warmed up ran better, but would not get up on plane. THEN all of a sudden runs like a bat out of hell - perfect.

    Anyway im going to rebuild the carb (44mm) and check all my fuel lines.

    two questions:
    1. Carb has two places to attach a fuel line, one in and one out. Previous owner had a "T" in the fuel supply line and attached to both.. Is this correct?

    2. Compression. brand new tester in the package from local auto store. Engine was cold. pulled both plugs spun the motor for maybe 3 seconds to clear fuel if any was present. installed compression tester in one hole and plug back in other. wide open throttle and spun for about 2-3 seconds to take the reading.

    once i was done checking both,,, compression was 175 and 180. i was expecting like 120...

    Is that normal or am i missing something here???

  2. #2
    PWCToday.com Is My Home Away From Home fox river pwc's Avatar
    Join Date
    Dec 2005
    Location
    Wisconsin
    Age
    49
    Posts
    7,826
    Blog Entries
    5

    Re: 1993 Waverunner 3 650 compression numbers high?

    20180710_165242.jpg20180710_194147.jpg

    Got my 92 Rage last month. Maybe 50 hours on it. Normal yami stuff has a return line from the carb back to the tank. Since that isn't possible with the Rage tank set up, they normally have the return line feeding right back to the fuel filter. See my picture. I suppose a tee would accomplish about the same thing. Compression on a stock 650 would be more like 140-155 or so. Battery strength is a factor. You may have a milled head or if it's a cheap tester, it could be off a bit.

    I'd bet your issue is clogged external fuel filter or the small filter inside th carb is plugged. Or you may have a leaky connection at your tank/tanks.


    WHEN IN DOUBT, GAS IT!

    Yeah, I'm an @sshole, but I'm not a complete @sshole.

    http://badgerlandjetpilots.com/

    I don't come here to make enemies - only to identify them...

  3. #3
    PWCToday Newbie
    Join Date
    Aug 2015
    Location
    Houston
    Posts
    8

    Re: 1993 Waverunner 3 650 compression numbers high?

    thanks Fox, im leaning that a previous owner milled the head. Any idea on the info for that fuel filter?

  4. #4
    PWCToday.com Is My Home Away From Home fox river pwc's Avatar
    Join Date
    Dec 2005
    Location
    Wisconsin
    Age
    49
    Posts
    7,826
    Blog Entries
    5

    Re: 1993 Waverunner 3 650 compression numbers high?

    I think there is a fram number on that filter. Will check next chance I get. Maybe this weekend. Got a wedding on sat.


    WHEN IN DOUBT, GAS IT!

    Yeah, I'm an @sshole, but I'm not a complete @sshole.

    http://badgerlandjetpilots.com/

    I don't come here to make enemies - only to identify them...

Thread Information

Users Browsing this Thread

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

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBadvanced CMPS v4.2.0