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anyone have a yamaha yfz 450

Discussion in 'All Terrain Vehicles' started by red neck toy, Mar 17, 2010.

  1. Mar 17, 2010 at 1:03 PM
    #1
    red neck toy

    red neck toy [OP] Well-Known Member

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    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    ive got a question if you do. or if you know anything about it
     
  2. Mar 17, 2010 at 1:04 PM
    #2
    derekAV

    derekAV Well-Known Member

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    i got one..ask away hahaha
     
  3. Mar 17, 2010 at 1:04 PM
    #3
    619Tacoma

    619Tacoma Baja bound

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    - Billstein 5100's all around with OME 885 coil springs. - K&N Air Filter - HID Headlights & Fogs - Kenwood Stereo & Infinity Speakers - CB Radio, - Fog On Anytime mod - Anti Tailgate theft mod. More comming...
    I have an 04 but don't know ALL that much about it mechanicly... :S
     
  4. Mar 17, 2010 at 1:11 PM
    #4
    red neck toy

    red neck toy [OP] Well-Known Member

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    adams center, New York
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    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    well it traded an old chev y truck for an 06 special edition. it looks brand new.
    but it doesnt run quite right. if i hit the gas it almost dies out but when i gradually get on it its fine.
    i pulled the carb and it looked clean but it was too confusing of a carb for me to mess with lol
     
  5. Mar 17, 2010 at 1:15 PM
    #5
    derekAV

    derekAV Well-Known Member

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    could be tons of things..what kind of gas are you running in it?

    or the valves could need adjsting,

    or the air filter could be really dirty,


    but most likely the carb just needs adjusting, like the iddel or the throttle cables might have too much play in them.
    or put a new plug in it
    hard to tell really, but it can be fixed
     
  6. Mar 17, 2010 at 1:15 PM
    #6
    619Tacoma

    619Tacoma Baja bound

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    - Billstein 5100's all around with OME 885 coil springs. - K&N Air Filter - HID Headlights & Fogs - Kenwood Stereo & Infinity Speakers - CB Radio, - Fog On Anytime mod - Anti Tailgate theft mod. More comming...
    The yfz450 is known to have a "bog" when you apply full throttle. I used to log onto a YFZ forum and that's where I learned that from. I'm not sure if it could also be something else but that's my guess.

    If you give it lots of gas, it will bog a bit...

    Check out yfzcentral.com
    It's a yfz450 & yfz450R forum. VERY informative stuff there.

    search for "bog" or something like that. You should get lots of help at that forum.
     
  7. Mar 17, 2010 at 1:17 PM
    #7
    ScottyKC

    ScottyKC Well-Known Member

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    I have a 2005 suzuki RMZ 450. I had the same problem. I stored the bike in a shed under my deck. It was always moist in there and it ended up screwing up my carb. I looked at the carb and it looked good and clean. The bike shop replaced gaskets and it ran great after that.
     
  8. Mar 17, 2010 at 1:17 PM
    #8
    red neck toy

    red neck toy [OP] Well-Known Member

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    adams center, New York
    Vehicle:
    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    no its not just a bog. like i cant even lift the wheels off the ground or punch it around a corner cuz it just it nothing. i almost get thrown into the bars. and then it kicks in and almost throws me off the back haha.
    alright ill check that forum out thanks.
    one more question tho is my header supposed to glow red?? lol ive heard its normals on these but is it really?
     
  9. Mar 17, 2010 at 1:19 PM
    #9
    red neck toy

    red neck toy [OP] Well-Known Member

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    adams center, New York
    Vehicle:
    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    plug is good, air filter is good, and carb is clean. and i have 93 octane in it
     
  10. Mar 17, 2010 at 1:20 PM
    #10
    derekAV

    derekAV Well-Known Member

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    mine never glows red! but it runs hot as hell.

    is your radiator good?
     
  11. Mar 17, 2010 at 1:29 PM
    #11
    red neck toy

    red neck toy [OP] Well-Known Member

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    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    i just looked up on that yfz central site. it says it normal for a glowing header. cuz its only a single walled pipe or something.
    the engine runs normal temp. just the header glows red. i noticed that last night. i havnt even riden the thing yet just up and down my drive way. i got it over the winter so thats why.

    i just cant understand why it runs fine except for when i punch it.
     
  12. Mar 17, 2010 at 5:35 PM
    #12
    red neck toy

    red neck toy [OP] Well-Known Member

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    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    fixed the problem tonight.
    looked it up on yfz central.com
    it was where the throttle cable attaches inside the carb.
    the screw thing and plastic piece was separating so i did the "zip-tie mod" and now it runs beautiful
     
  13. Mar 17, 2010 at 5:37 PM
    #13
    1TUFFTRD

    1TUFFTRD WTF

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    shoulda got a honda:D
     
  14. Mar 17, 2010 at 5:54 PM
    #14
    lowchef

    lowchef Member

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    sound like your running lean...you probabbly need to rejet it...
     
  15. Mar 17, 2010 at 7:03 PM
    #15
    derekAV

    derekAV Well-Known Member

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    hahaha i called that one hahaha jkjk

    glad u got it fixed
     
  16. Mar 18, 2010 at 3:38 AM
    #16
    FoxySandChick

    FoxySandChick Well-Known Member

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    Just saw this thread..was going to suggest this ^^, glad you got it fixed.

    But I 2nd this ^^...you might want to check your jetting, check the condition of your spark plug after riding a bit and see how it looks.
    It is ok for the header to glow a little, but if its bright solid red that is a problem and it shouldn't glow from just a little ride down the street.
     
  17. Mar 18, 2010 at 4:00 AM
    #17
    red neck toy

    red neck toy [OP] Well-Known Member

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    05 tacoma dbl lifted
    -3in toytech lift -33" x 11.5" firestone destination m/t -16" x 10" mickey thompson classic II. -cut and boxed in body mounts so no more rubbing!! -black headlight covers -anytime foglight mod -35%tint front -5% over stock on back -custom built bull bar -mossy oak camo seat covers -k&n cold air intake -tornado gas saver -dual straight pipes. only tacoma i've seen with them and it sounds really good. (but not if you dont like loud) lol.. soon to come: -black headlight mod -aftermarket grill -blacked out emblems -headers -new shocks and leafsprings - considering all pro front bumper
    yeah im new to yfz's i had a fully modded kfx 400 before. but everything on the yfz is different lol.
    i ran it around yesterday and the header was glowing while it was sitting there warming up but after i rode around i pulled in the shop and shut the lights off and it was just slightly glowing
     
  18. Mar 18, 2010 at 4:29 AM
    #18
    FoxySandChick

    FoxySandChick Well-Known Member

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    The header shouldn't be any more red than your KFX got...it shouldn't look like it just came out of a fire ;). A slight glow is normal.

    What's done to the YFZ?

    I have a LTZ400, LTR450 and YFZ450...the YFZ has been the hardest to tune.
     
  19. Mar 18, 2010 at 5:06 AM
    #19
    Dan893

    Dan893 Well-Known Member

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    If your header is glowing just warming up it's usually a sighn your bike is running to lean. I know almost every bike Now comes on the lean now for emissions. I know on the ktms also have a leak jet and accelerator pump I know I had to mess with that on my 250sxf to get rid of bogging when you cracked it open out of a turn it would sometimes hesitate and then takeoff like a rocket
     
  20. Mar 18, 2010 at 5:12 AM
    #20
    SManZ

    SManZ el tráfico más lento se queda derecha

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    Before you mess around with the carburetor, try running some SeaFoam through it. Stuff works wonders!

    [​IMG]
     
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