New G450X from France !! - BMW G450X Riders Forum & Registry



Remove this advertisement by REGISTERING.

Page 2 of 2 FirstFirst 1 2
Results 51 to 54 of 54
  1. #51
    Tims1572's Avatar
    Points: 36,626, Level: 100

    Real Name
    Tim
    Location
    Arizona
    Joined
    Mar 2012
    Online
    6 Hours Ago
    Posts
    1,468 / 18 / 46 / 116
    Motorcycle
    '15 FE 501
    Motorcycle
    '77 Mc400
    Motorcycle
    '10 Road Glide
    Motorcycle
    '09 G450X
    With that hesitation I would think you either have a dirty or bad injector that needs cleaning/backflushed or the fuel pump is weak or the strainer screen at the base of the fuel pump is partially clogged. Have you checked both of these things.

    Quicker throttle response can also be achieved by removing the second butterfly in the FI unit. This can be done by removing the seat and ECU hold down plastic bracket and going in at it from the top after removing the FI units top hose clamp for the removal of the rubber neck through the hole in the airbox.

    This could also be an issue with the TPS (Throttle position sensor) setting, that could need adjusting or at least checked. You need a set of test leads and a multimeter to do that. I believe the TPS setting for our bikes is .78 -.80 with the throttle closed.

  2. Remove Advertisements
    F800Riders.org
    Advertisements
     

  3. #52
    badaboum's Avatar
    Points: 481, Level: 9

    Location
    France
    Joined
    Dec 2020
    Online
    3 Weeks Ago
    Posts
    38 / 0 / 0 / 0
    Thanks Tims

    I agree, my attention was now focusing on the fuel part of the system. My question a few weeks ago about the fuel filter removal. The strainer at the base of the fuel pump is my next guess

    I'll be down in the country house in a few weeks and I will do the strainer first before moving to the fuel pump. The strainer is located within the pump assembly?



    My question on the topic dedicated to the fuel pump and the cleaning of the flter was not in vain

    Also, any tutorial on how to get to the TPS ?

    Thanks

  4. #53
    Tims1572's Avatar
    Points: 36,626, Level: 100

    Real Name
    Tim
    Location
    Arizona
    Joined
    Mar 2012
    Online
    6 Hours Ago
    Posts
    1,468 / 18 / 46 / 116
    Motorcycle
    '15 FE 501
    Motorcycle
    '77 Mc400
    Motorcycle
    '10 Road Glide
    Motorcycle
    '09 G450X
    To adjust the TPS you need a set of test leads, they have a set for KTMs that work on our Keihin FI system that connects to the bottom TPS terminal on the FI Unit and the other end fits on the wire harness plug on the FI units lower right hand side.
    This test lead has 3 pairs of wires of which only 1 of the wires is required to read the TPS Voltage, that you can get the TPS setting with the throttle closed at the Idle position is all that's really required.

    It should be exactly the same for the Husky 449/511.
    Here is a link to the Cafe husky forum where (Dangermouse designs) "David Bates" does a video that explains this. www.cafehusky.com/threads/449-511-manually-setting...

    Slavens Racing sells the test leads for about $33.00 that I am talking about. They have 3 different versions of these leads so you will have to pull the plug off the TPS terminal to visually match it up to the pictures of the 3 different plug types on the website.
    I'm thinking about getting a pair of these test leads myself as they will likely work on my Husky FE 501 as well. But I can reset my TPS and read its value anytime on my laptop since I run the Power Commander 5 with Autotune on my G450X.
    Here's the link for the TPS leads: https://slavensracing.com/shop/throttle-position-sensor-adjustment-tool-ktm

    If the idle setting doesn't fall into the range on "David Bates" video there is a lock screw and adjustment slot that allows it to be adjusted, but this is a bit touchy and barely needs to be moved and even tightening down the lock screw once adjusted can make it move a slight amount .


    As for the Fuel pump filter screen strainer you can see it in the picture below. It sits at the base of the pump and comes up along its side. If the bike has sat for any length of time prior to you getting it, it can clog with deposits with today's shit ethanol gasoline.
    Sorry the picture is sideways as I was at work when I sent the picture from my phone to my work email at my desk to download it to the forum for you.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	G450X Fuel Pump assembly.jpg 
Views:	6 
Size:	311.1 KB 
ID:	371635  
    Last edited by Tims1572; 3 Weeks Ago at 07:37 PM.

  5. Remove Advertisements
    F800Riders.org
    Advertisements
     

  6. #54
    badaboum's Avatar
    Points: 481, Level: 9

    Location
    France
    Joined
    Dec 2020
    Online
    3 Weeks Ago
    Posts
    38 / 0 / 0 / 0
    Thanks Tims!

    I have my next job card for next trip down the country house. Get the fuel pump out for cleaning the strainer

Page 2 of 2 FirstFirst 1 2

Bookmarks

Posting Permissions

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