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fuel

  1. ltr bogging out

    Engine/EFI/Drivetrain
    hello, i recently have just done a top end on my quad. it ran great for awhile but one day at the track the quad bogged out and died. it would still crank over but wouldnt start. when i got home i pulled the plug out and it was black and i crank over the engine with the plug out and alot of gas...
  2. 13:1:1 piston race fuel?!?!

    General Discussion
    I am rebuilding my ltr and decided to go with a 13:1:1 piston while the motor was apart. I have a yoshi rs5 slip on with fmf mega bomb header. Custom intake,cherry bomb and a few other little thing. I plan to buy a pc3. Does anyone know if they will make me a custom map and do I have to run race...
  3. 2006 LTR 450 no swirl or inline filter

    Engine/EFI/Drivetrain
    Hey guys. New to this site and a new owner of a 2006 ltr (cherry bomb, air box lid removed and spark arrestor removed). I picked it up for cheap and it runs but not so good (idles ok, hard starting sometimes, and dies when you let off the throttle quick). I took off the petcock to see what the...
  4. Not Running ? need help !!

    Engine/EFI/Drivetrain
    My bike recently starting bogging under hard throttle so i thought it must be a dirty swirl filter ! i took the swirl filter out and it was really dirty so replaced it emptied all the tank of the old fuel and checked the fuel pump filter which was fine . Put everything back together and it...
  5. Need ASAP Fuel injector and Fuel pressure regulator

    For Sale
    Just like the title says I need Injector and regulator. Need ASAP. The cheaper the better. Trying to sell the quad and cant the way it is. Send pics and prices to 6056309844 Thanks Dan
  6. bogs and dies, help

    Engine/EFI/Drivetrain
    ok, so im in Afghanistan right now. before I left I drained my tank and filled it with AV gas, then started it up and let it idle for awhile to burn out any "gasoline" (magic water producer) that was in the lines, filter, pump, etc. It ran fine, sat and idled for about an hour. shut it off and...
  7. What could be wrong?

    Engine/EFI/Drivetrain
    I have a 2007 LT-R and can't figure out what is wrong with it. When idling barely giving it gas kills the engine and when riding, half way through throttle it stops accelerating. Thought it might not be getting enough fuel but fuel flow, injector, pump, and filters seem fine
  8. Fuel Pump

    Engine/EFI/Drivetrain
    I was Riding and all of the sudden it stalls out, so I go to re start and it just cranks, so my friend came over on his four-wheeler and I asked him if it was leaking gas, (I smelled gas before i asked him) and he said yes, so I look at my fuel pump and it had broken the black plastic part on...
  9. newbie just traded for my first ltr but it wont stay on please help! Hardstart...

    Engine/EFI/Drivetrain
    So I just traded my yz426 dirtbike for an 06 ltr450 that is having issues. Heres the story on it... started smoking on the previous owner & slow starting so he dropped of at a guy that worked out of his house to have the top end rebuilt with a 480 bigbore or something like that. 7 months later...
  10. Fuel ATV 1 1/8 Clamps question

    Body/Controls/Protection
    Hey guys, tried to do a search but had no luck with my specific question. I'm wondering if anyone has installed the 1 1/8 clamps without any modification to the stock stem. I tried to bolt up my new clamps to run my flexx bars, but there are bushings with metal cups that seat inside of the stock...
  11. LTR Parts, engine, tranny, etc

    For Sale
    LTR450 Parts, cases, misc, ecu I have some LTR450 parts left from parting out my machine. Can send pictures of anything you would like. Payment by Paypal or money order threw a wal-mart. Call or Text Message 978-228-9037 for easy contact and pictures. Engine: Inner cases (both...
  12. 2007 LTR leaking fuel problem!!!! HELP!

    Engine/EFI/Drivetrain
    I have a 2007 LTR and I noticed fuel slowly dripping onto my battery box top...I looked underneath the body panel and noticed a little fuel dripping from the fuel shutoff...it also has some sort or thick rubber hanging out from underneath the shutoff...I'm not familiar with this?!?! Any help...
  13. Advice needed!!!

    Engine/EFI/Drivetrain
    I have an 07 450 ltr....stock rs5 exhaust, stock engine, cherry bomb wit air box lid removed...I'm wanting to remove the air box...what is the absolute safest intake to install to do away with my air box....I don't wanna harm my engine...also I'm wanting some more easy installs that will give me...
  14. LT-R450 will not start or run. Help

    Engine/EFI/Drivetrain
    My LTR 450 sat up for a couple weeks and then it was incredibly hard to crank, the starter would turn over but it was a problem getting it to start, but once it started it was fine and ran great until it sat for a few hours. I have done everything I could think of to fix it because now it will...
  15. 06 carb conversion help?

    Engine/EFI/Drivetrain
    I have an 06 ltr and its done nothing but give me problems .... it will not run correctly, I have changed every single part of the fuel system otger than the throttle bbody which I may try... but anyways Does anyone know of a cheaper way to do a carb kit other than buying the whole kit from...
  16. 450 running/idle/fuel problems help needed!

    Engine/EFI/Drivetrain
    Ok guys I'm a new 450 owner, that being said i just purchased an 06 450 tgat had some work done by williams performance it has a hotcam oversized valves and port and polished head Here's the deal, Cold start: Starts perfect just push of a button no throttle assistance to fire up Rev's nicely...
  17. Swirl Filter changed but ? leaking now..

    Engine/EFI/Drivetrain
    so, ive had my LTR for 4yrs and now i began to see issues with rough starting so i decided to go and splurge and spend 49 dollars on the swirl filter ! i figured out how and where it is after making a mess with gas everywhere and replaced the spark plug too since i hadnt done it ever ... and...
  18. Pim-2 problems

    Engine/EFI/Drivetrain
    I just bought a bran new pim 2 and installed it to my 06 ltr450 and my motor cut out bad when you gas it , sounds like its gargling lol. I tryed both maps that come pre installed and also zeroed one map and also tryed every map on yosh's web site. I have yosh rs5 oval un corked no arrester , no...
  19. Will idle but dies when u give it gas

    Engine/EFI/Drivetrain
    Im new to the LTR community, i had a best friend who passed away back in april, god rest his soul. Me and him always went to the races togther and we were riding buddies growing up. His parents felt it was what he would of wanted so they gave me his 2007 LTR 450 and when i got it i charged the...
  20. A Few Problems I have Solved

    Problem Solved!
    First comes to first i love my ltr. Great quad. First problem i came across the quad bogging in the air, turned out to be the fuel filter. (see filter forum) Then one day quad just quit and was very difficult to start. Noticed the fuel pump wasnt priming after turning the key on. Checked all...
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