Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 1 of 2 12 LastLast
Results 1 to 25 of 50

  1. #1

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    need help getting tuned

    i just got a exceed mutant with the 18 cxp motor.after third tank of fuel it lost all power and dies at full thottle.what could be the probblem?

  2. #2

    Join Date
    Sep 2007
    Location
    Benton Harbor, MI
    Posts
    153
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    well what is happing? do you have blue smoke is fuel comming out of the exhaust? is your glo plug working? what happens when you try to restart it? how hot is the engine?
    If you haven\'t broken something your not driving it right!

  3. #3

    Join Date
    Jan 2007
    Location
    , PA
    Posts
    5,382
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    Have you checked temps at all durring break in. If you dont pay attention to your temps durring break in it is very easy to overheat teh motor. And if you do it several times you can easily loose the pinch in the cylinder. Also you may have to replace the glow plug 2-3 times durring break in. Change the plug and try again.
    The one with the most toys wins. I think I may have a good chance of winning.

  4. #4

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned


    ORIGINAL: jesskrza

    i just got a exceed mutant with the 18 cxp motor.after third tank of fuel it lost all power and dies at full thottle.what could be the probblem?

    if you dont have a temp gun, put a little water or spit on the head of the engine while your running it and see what happens, if it sizzles right away, its too hot, if it sits and evaporates in a few seconds your ok. if it sizzles you need to richen the mixture.

    125 characters and 2 lines is not enough to list my RC obsession!!!

  5. #5

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    ok i have it tuned good.but the needle valve has to be 4 1/2 turns out.i don't know how to check for air leaks.it runs good just don't know why it has to be so rich?

  6. #6

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    if it runs good and not hot, dont worry about it. thats alot of turns out though, i think you have an air leak, i would suggest spraying some fuel around the base of the carb, backplate and see if the idle changes, if it does then thats where your leak is. spray a little at a time, maybe put some fuel in an old, clean windex bottle.
    125 characters and 2 lines is not enough to list my RC obsession!!!

  7. #7

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    ok thanks.so does anyone know what kind of take off power it should have?it seem fast for what it is.but it seems to not have the best take off power.is it cause its a small motor or is 1:8.5 high gearing for the car?

  8. #8

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    you may have your low needle set to lean or rich, it should be flush with the collar and the high end should be 2 1/2 out. i would set it to these settings, watch these videos about tuning and see how it works for you. you may just have you low end needle too lean.

    http://youtube.com/watch?v=oSmMzpZM_As

    http://youtube.com/watch?v=BJFsJAxNoRg
    125 characters and 2 lines is not enough to list my RC obsession!!!

  9. #9

    Join Date
    Sep 2007
    Location
    , KS
    Posts
    164
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    My money is on Ehroof there.....


    Wolv.
    Hurricane XP Tornado BB

  10. #10

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    ok thanks i will try it tom.

  11. #11

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    good luck and let me know how it works out, if it doesnt help, let me know, we will figure it out.
    125 characters and 2 lines is not enough to list my RC obsession!!!

  12. #12

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    so i ran it for a few min. and put some water on the head and i would guess its way to hot it sizzled and was gone as fast has i put it on.so i most have a air leak.to rich wouldn't make it hot would it?

  13. #13

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    i have tohe low end 3 1/2 turns out and thats flush with the collar.if i turn it out anymore it losses all power.

  14. #14

    Join Date
    Jun 2005
    Location
    Clermont, FL
    Posts
    2,824

    RE: need help getting tuned

    whats your h igh end set at? I flush on the low end is stock and after break in most have to turn it in a bit. Running to rich will not make it run at
    Cen truggy, Bigfoot 1/5th, Cen buggy, Mg16, Redcat Earthquake, Redcat Drifter

  15. #15

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    put the high end to 2 1/2 out and the low flush with the collar and see how it runs and let me know, you do know the needles right?
    125 characters and 2 lines is not enough to list my RC obsession!!!

  16. #16

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    i have the low end flush and the high end 4 1/2 turns out.i ran 1/4 tank though it and it was at 280 degrees.is that to hot?on the high end needle valve should there be a washer on both sides of the fuel line?or is the both self sealing?

  17. #17

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    i am pretty sure there is a rubber o ring on the needle, i never took mine out on the vx but most if not all have a rubber o ring on them. 280 is hot, unless your giving it a beating and its warm out.
    125 characters and 2 lines is not enough to list my RC obsession!!!

  18. #18

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    bro, maybe your tank is clogged, there has been a few problems with clogged tanks, maybe your fuel flow is restricted, take the fuel line off the carb and off the exhaust, blow in the exhaust line and see how the fuel comes out of the other side, there may be a little restriction, not much, if its hard to get fuel to come out, thats the problem, clogged tank.
    125 characters and 2 lines is not enough to list my RC obsession!!!

  19. #19

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    i only ran it like three min. to get it that hot.inside the needle there is a o ring but im talking about the fuel line were the needle valve goes though the little ring at the end of the fuel line.if it needs washer there cause it has one on top but not the bottom.

  20. #20

    Join Date
    Feb 2006
    Location
    howard beach, NY
    Posts
    16,490

    RE: need help getting tuned

    you need to post a picture, i really dont know where your talking about, if you didnt touch it, i am sure its ok. has this been happening since you started the car? did you check the tank like i said?
    125 characters and 2 lines is not enough to list my RC obsession!!!

  21. #21

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    ok i check everthing for leaks and can't find any.checked the tank its not clogged.watch the tuning video.did what they said i got the car running great.i have the needle valve 4 turns out and the low end 3 turns out.but it still is getting to hot.its ran up to about 300 degrees and started to die.so i stopped driving it.i tryed to richin it up to were it stated to not run very good.it still ran at 250 degrees.so i have no clue what the probblem could be?and what temp. should they run at?

  22. #22

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    and does anyone know any name brand cars that parts would inner change with my exceed mutant.like a hpi or traxxes. something my local hobbies store has heard of.

  23. #23

    Join Date
    Jun 2005
    Location
    Clermont, FL
    Posts
    2,824

    RE: need help getting tuned

    are you running with the b ody on or off? Do y ou have wholes cut in your body for airflow?
    Cen truggy, Bigfoot 1/5th, Cen buggy, Mg16, Redcat Earthquake, Redcat Drifter

  24. #24

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    i haven't ever ran it with the body on.

  25. #25

    Join Date
    Nov 2007
    Location
    , WI
    Posts
    34
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: need help getting tuned

    i got sick of not being able to drive my car.so went and order a new motor.i got the o.s. 18 .every one said that its way bet and faster with more power then the vertex 18 that was in there.so is it really as much faster as everyone says it is?so what can i check next on my motor that i have?i don't just want to get rid of it i still want to try to get it fixxed.and everyone said that a .26 motor was to much power and it would tare my car apart is that true?


Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 03:46 AM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.