Results 1 to 4 of 4
  1. #1

    Join Date
    Jul 2011
    Orlando, FL

    Need Help !!!!!!!! GP 1200

    I have a 1997 GP 1200 with problems. Last weekend took out to lake got back home flushed and put away in my garage. Yesterday went to crank it and did not start i pulled spark plugs and all 3 cilynders are full of gas.Checked carburator and was also full of gas to the top.WTF?

    Need advise is this normal in a GP 1200 ? What do i need to check for ?

  2. #2
    Mighty Mouse's Avatar
    Join Date
    Feb 2011
    Were all the cylinders and carbs filled with gas. Was the gas really to the top of the carb throat? I am not sure how that could have happened, but maybe a bad needle valve or seat. Still thats a bunch of fuel. Must be lots of pressure building in the tank. Check fuel tank pressure next time you get home from riding and see if there is excess pressure built in the tank. I think there is a check valve on the the top of the tank on the 1200. Might want to check see if it is working. Just a few thoughts. Have you had this ski long?

  3. #3

    Join Date
    Nov 2009
    If the cylinders were full of gas but it didn't fire it would seem you have no spark.
    Have you checked? Maybe CDI failed? Still doesn't explain full carbs, though.

  4. #4
    Yamaha artisan Cutlass's Avatar
    Join Date
    Oct 2010
    Madison, WI, USA
    Must be a bad needle and seat and that caused the fuel to just siphon out of the tank into the engine. Did you have the fuel selector in the "Off" position?

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. I need help with 1200 xl
    By BDBRACING in forum Yamaha PWC Performance (2-stroke)
    Replies: 9
    Last Post: 05-30-2009, 08:31 AM
  2. New here, need help with 1200 XLT
    By tnerb in forum Yamaha Open Discussion
    Replies: 18
    Last Post: 05-13-2009, 12:15 AM
  3. need help with 1200 gpr
    By noshowallgo in forum Yamaha PWC Performance (2-stroke)
    Replies: 7
    Last Post: 08-05-2008, 09:35 AM
  4. Need stock gp 1200 non pv head
    By jctmotorsports in forum Yamaha Old School Skis
    Replies: 2
    Last Post: 07-04-2008, 10:43 AM
  5. Need Help GPS speeds are down
    By 1BAD07RXP in forum 4-Tec Performance
    Replies: 6
    Last Post: 08-13-2007, 06:29 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