02 R1150R won't start - advice please!

Discussion in 'Road Warriors' started by Spaceweasel, Jul 13, 2019.

  1. Spaceweasel

    Spaceweasel n00b

    Joined:
    May 26, 2019
    Oddometer:
    8
    Location:
    Denver, Colorado
    My 02 r1150r with 100k miles was running just fine, with no starting issues. I pulled the subframe and airbox to repaint, and when I put it all back together it won't start.

    The fuel pump hums when the key is turned.
    There is about 1 gallon of gas in the tank.
    The starter turns the engine over robustly.
    The battery is fully charged at 12.9 volts.
    Both new plugs are getting spark.

    I pulled it apart again and made sure there were no kinked lines that I could find. The quick disconnect fuel lines dribble some fuel when I disconnect them, so it appears they flow fuel.
    There are no blown fuses.
    I made sure there were no obstructions in the air intake.

    Any thoughts?

    Thank you for any help!
    #1
  2. ExodusRider

    ExodusRider ExodusRider

    Joined:
    Jun 9, 2015
    Oddometer:
    1,281
    Location:
    Houston, Texas
    What do you mean hum?

    When you turn the key on, does it sound like the pump is spinning up and spinning down when you turn key off ?

    Get a stethoscope and try to get a clear sound..

    Or does it humming like it's stuck or not doing anything, trying to break free.

    If you have sparks, fuel, and air.. no reason why it wouldnt fire up..


    I assume all connections/hoses to airbox in place?

    Any eeror codes / lights on dash ?
    #2
    rg sw wa. likes this.
  3. GroceryRun

    GroceryRun Been here awhile

    Joined:
    May 4, 2010
    Oddometer:
    230
    Location:
    Central NJ , USA
    Make sure both throttle cable ferrules are fully seated into the throttle body.
    #3
    rg sw wa. likes this.
  4. Jim Moore

    Jim Moore Souped-Up Weasel

    Joined:
    Dec 24, 2001
    Oddometer:
    32,044
    Location:
    Jax, FL
    Make sure your fuel line disconnects are completely squeezed together.
    #4
    rg sw wa. likes this.
  5. miker325

    miker325 Been here awhile

    Joined:
    Sep 9, 2015
    Oddometer:
    808
    Location:
    Sonoma County, CA
    +1 on above. If you've confirmed all that, I'd pull an injector to make sure it's got a good spray pattern of fuel because like Jim, I'm curious to see if something got hosed up while reinstalling the tank. If you have a blocked line, a poor fuel line connection, or the fuel pump isn't working as it should, the fuel flow test will confirm that.
    #5
    rg sw wa. likes this.
  6. Steve W.

    Steve W. Boxer Pilot

    Joined:
    May 14, 2005
    Oddometer:
    763
    Location:
    Upstate South Carolina
    It is possible to plug the air cleaner sensor wire into an injector and vise versa. It won't run. I have heard of this being done. (damhik) Cheers
    #6
    rg sw wa. and LAFS like this.
  7. LAFS

    LAFS Long timer

    Joined:
    Dec 15, 2016
    Oddometer:
    1,601
    Love a honest man sharing a mistake to help. Nice job.
    #7
    rg sw wa. likes this.
  8. H96669

    H96669 A proud pragmatist.

    Joined:
    Nov 20, 2009
    Oddometer:
    5,541
    Location:
    Hiding off Hwy 6, B.C.
    Pump humming and not building up pressure?My Kiwi buddy did as we recommended and checked fuel pressure with a gauge.His humming pump was putting out less than 10psi so no start.
    #8
  9. Spaceweasel

    Spaceweasel n00b

    Joined:
    May 26, 2019
    Oddometer:
    8
    Location:
    Denver, Colorado
    Thanks for all the help, everyone. I continued checking everything I could think of along with doing every maintenance item that I could find. Need to replace the alternator belt... maybe it's the hall sensor. Nope, wires seem in good shape. Brake pads, tires, and fluid flush... that's probably not keeping it from starting. Need to replace the fuel filter...maybe it's the fuel pump. After removing the pump/filter plate I noticed the hose between them had slipped off. Did I do that while pulling it out? I didn't think so, but replaced the filter and put new clamps on everything. Put it back together and - voila! She runs. Thanks again for all the input and advice.
    #9
    PineyMountainRacing and lewisjr1 like this.
  10. lewisjr1

    lewisjr1 Long timer Supporter

    Joined:
    Sep 26, 2008
    Oddometer:
    4,150
    Location:
    DC metro
    Low fuel pressure... Nice find!
    #10