Results 1 to 8 of 8
  1. #1

    Join Date
    Jul 2008
    Long Island, NY

    1100 Raider serious backfire, Too much Fuel???

    Tried to start my raider today, and it took about 10 seconds of cranking to start. Then when I cracked the throttle, there was a huge bang, and my storage bin was in pieces. It blew the rear exhaust hose- after the waterbox. I just had the carbs off of this thing because it would not idle.

    What did I mess up when reassembling the carbs? I am assuming I have a n/s stuck open??
    The exhaust hose was wet inside where it blew, and the rideplate, and nozzle are covered in wet black crap- im assuming a mix of carbon and fuel?

    Ill post some pics of the damage. Any help figuring this out would be great. I am really leaning toward the carbs being the issue, but just wanted some input before I start tearing into this thing again.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	100_0207.JPG 
Views:	51 
Size:	1.85 MB 
ID:	90354   Click image for larger version. 

Name:	100_0208.JPG 
Views:	56 
Size:	2.00 MB 
ID:	90355   Click image for larger version. 

Name:	100_0209.JPG 
Views:	53 
Size:	1.98 MB 
ID:	90356  

  2. #2
    Moderator RX951's Avatar
    Join Date
    Apr 2005
    League City, Texas
    I would also inspect your 'reeds' and make sure any petals did not get cracked/fractured from the backfire.

  3. #3
    old school big raider's Avatar
    Join Date
    Sep 2006
    recheck your carb settings sounds like a lean backfire

  4. #4

    Join Date
    Jul 2008
    Long Island, NY
    carbs are set at lows 1 1/2 out highs 1 out.

    I believe I was told that a lean backfire will be out of the intake, and a rich one will be out the exhaust. Does anyone know if this is true?

    The only thing that makes me think it was too rich is the fact that the ride plate and nozzle were clean and grey before I messed w/ the carbs, and after this one startup, it is soaked in black liquid.

    motor is stock w/ FA's

  5. #5
    Join Date
    Apr 2006
    Orange, TX
    A lean pop is usually through the intake. Excess unburned fuel will ignite in a hot exhaust. You have a rich condition, the pics tell the story IMO.

  6. #6
    my 1100 did that with a couple of missing reed petals.

  7. #7

    Join Date
    Jul 2008
    Long Island, NY
    I'll order some carb kits, and check the reeds when I pull the carbs. Does anyone know where I can get that exhaust hose?

    Anything else I should look at?

    Oh, and where is the best place to get some carb kits?
    Last edited by fboncore; 08-25-2008 at 05:09 PM.

  8. #8
    raiderteen's Avatar
    Join Date
    Nov 2007
    Marion, Illinois
    i would try either or the oem store here

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Kawasaki STX 1100 Uses WAY TOO MUCH fuel
    By mdog in forum Kawasaki PWC Performance (4-stroke)
    Replies: 4
    Last Post: 07-15-2015, 12:36 AM
  2. Carb issue? too much fuel going to rear piston.
    By Integragated in forum Yamaha PWC Performance (2-stroke)
    Replies: 3
    Last Post: 08-08-2012, 09:23 AM
  3. Mikuni dumping way too much fuel
    By wildrunner in forum Yamaha PWC Performance (2-stroke)
    Replies: 4
    Last Post: 10-19-2011, 09:38 PM
  4. 951 barely turns over. too much fuel?
    By abarrassr07 in forum 2-Stroke Performance
    Replies: 5
    Last Post: 04-29-2009, 06:17 AM
  5. Waaaaaay too much fuel
    By hyoctane23 in forum Polaris Open Discussion
    Replies: 2
    Last Post: 09-04-2008, 12:18 AM

Posting Permissions

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