XR400 - I think it is an offspring of Satan

Discussion in 'The Garage' started by ibeme1, Jan 1, 2013.

  1. ibeme1

    ibeme1 Adventurer

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    I need someone to come and sprinkle holy water on my '04 XR400. I am ready to throw a match on her and watch her burn.
    #1
  2. sailah

    sailah Lampin' it

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    Plenty of talented mechanics here how about a description of problems?
    #2
  3. ibeme1

    ibeme1 Adventurer

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    I need someone to come and sprinkle holy water on my '04 XR400. I am ready to throw a match on her and watch her burn.
    #3
  4. larryboy

    larryboy Chopper Rider

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    Let's torch it!!

    :pope
    #4
  5. ibeme1

    ibeme1 Adventurer

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    The owner is a wuss and did not have any luck starting her. I kicked and kicked aaannnd kicked and she wont start. This is my first (last?) and I am 99.9% certain its operator error. =)
    #5
  6. dirtybike

    dirtybike Been here awhile

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    First start of day, I push mine up small hill and bump start it. Kind of weird, maybe due to the automatic compression release, but I can never get a good feeling if it is going to catch or not when kicking. Maybe insure for fire and theft so I can buy a bike with an electric leg.
    #6
  7. ibeme1

    ibeme1 Adventurer

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    #7
  8. whisperquiet

    whisperquiet Been here awhile

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    My '98 XR400R was the hardest starting bike I ever owned. I started the bike when cold by turning the fuel petcock on, leaning the bike over to the left until fuel ran out of the carb overflow tube, then kicked when just past top center on the compression stroke...............it usually started. Then, I would fall and it was a bitch to start when hot/flooded.
    #8
  9. knobbyjoe

    knobbyjoe knobbyjoe

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    Just saying, I had a XR 400 that was a beast to kick over when hot. When I decided to sell it, I tuned it up. Found out that the honda guy at the counter had given me the wrong plugs! After changing plugs it started like a dream. Still sold it cause I bought a KTM!
    #9
  10. Dolly Sod

    Dolly Sod Red Clay Halo

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    A quick Google search turned up this thread...

    http://www.advrider.com/forums/showthread.php?t=281120

    Lean carb from the factory means hard cold starts. That thread has a good technique for kicking it over.


    ...and don't touch the throttle while kicking it.

    Assuming you've gone through the carbs or are confident they are clean and flowing well. Valves in spec and good spark.
    #10
  11. Switchblade315

    Switchblade315 Long timer

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    you need to find someone one that can ajust the valves the right way. this will fix 99% of the cranking problems. I fought a 96 for years when i raced. I fixed it the week i sold it because I learned this trick on that same motor on the quads. you want to know it PM me. I cant type how to do it good enough for it to be easy to understand but I can give you my cell number and tell you how. it's quite easy.
    #11
  12. D.T.

    D.T. Difficult but useful

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    Put gas in it.

    Or on it and light it on fire.

    I have a big single kicker too that won't start well in cold weather. Starts fine in warm hot weather. I tried modifying the choke circuit and richened up the pilot circuit which helped.
    #12
  13. ibeme1

    ibeme1 Adventurer

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    Thanks everyone. I thought for sure I was going to catch soooo much grief about how terrible a bike owner I am. :D

    I will some more reading (using the link on this thread). I did some research before I bought the XR but I figured it couldnt be that hard to start. :huh
    #13
  14. freetors

    freetors Been here awhile

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    Feb 20, 2011
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    Collinsville, OK
    Ship it out to me. I'll dispose of it properly :evil
    #14
  15. Switchblade315

    Switchblade315 Long timer

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    Nope yours in not the first XR400 to have this problem, but before you throw money at it trying to fix a carb problem adjust the valves the right way. on 400EX quads if they are right they crank as soon as the starter button is touched, if they are wrong they have to turn over 3 to 5 times before they crank.
    #15
  16. Dolly Sod

    Dolly Sod Red Clay Halo

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    What are they hydraulic or something? Or do you mean to make sure you adjust them on the compression stroke and not the exhaust stroke?
    #16
  17. ibeme1

    ibeme1 Adventurer

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    Tried to start it again today and no luck. I have decided that I hate this bike and I hope it rots in he**
    #17
  18. Dolly Sod

    Dolly Sod Red Clay Halo

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    Tried starting fluid and all that? Do you know the last time it ran? Is it stored in a heated garage?
    #18
  19. Sasquatch2112

    Sasquatch2112 scatology expert

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    My XR was a beast to start until I got a pumper installed! If I bought another the first thing that I would do is install a pumper!

    Spend the $400.
    #19
  20. Switchblade315

    Switchblade315 Long timer

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    no. I tryed at the very lest 10 times to adjust them on mine with filler gauges. i finely stopped trying to do it that way because there's no way in hell to get a filler gauge under the tapit strait on that head. it's just not possible. I do them the old fashioned way, by feel. you have to get them where you just barly can feel and maybe hear them tap by wiggling them. also they are stupidly hard to hold still when you tighten them down. the first time will take a wile, but once you get them right its easy from there, i can do them in about 30 minuets now. I did my 82 XL500R this way and I can crank it with a 10.5/1 compression piston in flipflops. one kick every time.

    the carb might need cleaning but do not lessen to anyone here about buying a freaking thing until you check a few things that are free.

    1. clean the carp, do NOT get carb cleaner on the diafram. it's not cheep
    2. set the valves.
    3 new spark plug
    4, make sure it's firing
    5.check for water in the gas.

    do not kick it over and over and over and over.

    cold choke it, rotate the motor over 7 times. don't kick it just push the kick starter down 7 times to rotate the motor. find top dead center. if you cant feel TDC keep easing it over until you do. actully kick it only on TDC and other kick is a wast.

    also the air fuel on teh front bottom of the carb should start at 2 1/4 turns out. if it's somewhere close to that when you clean it put it back where it was if it's way off that set it there to get started.

    again i offer if you PM me i'll give you my cell number and i'll walk you through this. i raced one for 4 years fighting this problem every race. 2 years later i learned what was going on and have fixed 10 of these motors.

    i have one in pieces in my shop right now. i wish i had one whole. i miss mine.
    #20