PlanetMinis Forums

2007 crf50 issues

This is a discussion on 2007 crf50 issues within the CRF50 forums, part of the General Talk category; I just picked up a real clean stock crf50, starts right up. When I'm riding it and give it full throttle it breaks up and ...

Results 1 to 13 of 13
  1. 03-14-2012, 03:31 PM #1
    jsander9 [OP]
    jsander9 is online now
    Senior Member
    This user has no status.
     
    jsander9's Avatar
    Join Date
    Aug 2008
    Location
    North Canton, OH
    Posts
    1,275

    2007 crf50 issues

    I just picked up a real clean stock crf50, starts right up. When I'm riding it and give it full throttle it breaks up and won't fully run out into high rpms....any suggestions?
    Reply With Quote Reply With Quote
  2. 03-14-2012 03:31 PM
    PlanetMinis.com
  3. 03-14-2012, 03:43 PM #2
    LongMooie
    LongMooie is offline
    Senior Member
    is excited to test the big valve
    50cc ripper motor
     
    LongMooie's Avatar
    Join Date
    Jun 2005
    Location
    originaly UK! now Central valley, Cali
    Posts
    4,056
    #1 clean out the stock air box/filter and pull the carb apart and fully clean it out
    #2 check the valve lash
    #3 check the electrical connections
    Reply With Quote Reply With Quote
  4. 03-14-2012, 03:50 PM #3
    jsander9 [OP]
    jsander9 is online now
    Senior Member
    This user has no status.
     
    jsander9's Avatar
    Join Date
    Aug 2008
    Location
    North Canton, OH
    Posts
    1,275
    Valve lash?? Sorry Im not sure what that is? Just the valve adjustment??
    Last edited by jsander9; 03-14-2012 at 04:24 PM.
    Reply With Quote Reply With Quote
  5. 03-14-2012, 04:45 PM #4
    mxmen
    mxmen is offline
    Senior Member
    This user has no status.
     
    mxmen's Avatar
    Join Date
    Jan 2008
    Location
    Québec, Canada
    Posts
    194
    Quote Originally Posted by LongMooie View Post
    #1 clean out the stock air box/filter and pull the carb apart and fully clean it out
    #2 check the valve lash
    #3 check the electrical connections
    +1 on cleaning your stock air filter or just put a UNI foam filter on that lil stocker!
    Reply With Quote Reply With Quote
  6. 03-14-2012, 05:28 PM #5
    tmas SMod Icon
    tmas is offline
    Super Moderator
    is in need of more ZB50's
     
    tmas's Avatar
    Supporting Member
    Join Date
    Apr 2005
    Location
    ...otnoroT...
    Posts
    6,853
    Quote Originally Posted by jsander9 View Post
    Valve lash?? Sorry Im not sure what that is? Just the valve adjustment??
    Yes,............. and throw a new spark plug in it.
    tmas


    tmas





    Reply With Quote Reply With Quote
  7. 03-14-2012, 08:07 PM #6
    manforrilla
    manforrilla is offline
    Senior Member
    This user has no status.
     
    manforrilla's Avatar
    Join Date
    Jan 2011
    Location
    Sonora CA (central cali in the hills)
    Posts
    221
    And pull the carb apart and blow out everything. You can carefully pull each of the screws with springs and such out and blast them with air from a compressor and gas will go everywhere but if there is dirt in there it will totally act like that.
    Reply With Quote Reply With Quote
  8. 03-14-2012, 10:25 PM #7
    eIghT-siX
    eIghT-siX is online now
    Senior Member
    This user has no status.
     
    eIghT-siX's Avatar
    Join Date
    Sep 2005
    Location
    T-Town
    Posts
    209
    make sure the ground bolt is tight. i forgot to tighten one and messed with the jetting forever before i figured it out.
    Reply With Quote Reply With Quote
  9. 03-15-2012, 05:12 PM #8
    jsander9 [OP]
    jsander9 is online now
    Senior Member
    This user has no status.
     
    jsander9's Avatar
    Join Date
    Aug 2008
    Location
    North Canton, OH
    Posts
    1,275
    Ok so here is an update......cleaned carb, cleaned air filter, tightened ground bolt, all wires are tight. The only electrical that was removed was the kill switch. Valves were measured and seemed to be set appropriatley.( drug just a little bit on the feeler guage at .0025) Now what?????
    Reply With Quote Reply With Quote
  10. 03-15-2012, 06:41 PM #9
    jsander9 [OP]
    jsander9 is online now
    Senior Member
    This user has no status.
     
    jsander9's Avatar
    Join Date
    Aug 2008
    Location
    North Canton, OH
    Posts
    1,275
    Oh and put a new spark plug in.
    Reply With Quote Reply With Quote
  11. 03-15-2012, 07:18 PM #10
    jsander9 [OP]
    jsander9 is online now
    Senior Member
    This user has no status.
     
    jsander9's Avatar
    Join Date
    Aug 2008
    Location
    North Canton, OH
    Posts
    1,275
    Help!
    Reply With Quote Reply With Quote
  12. 03-15-2012, 08:49 PM #11
    eichkay
    eichkay is offline
    Senior Member
    is Rocking a 88cc DOHC on 8's
     
    eichkay's Avatar
    Join Date
    Jul 2005
    Location
    Perth, Australia
    Posts
    811
    got a pic of the setup.. make sure the stock carbi is the stock carbi and not something bigger .. you just never know sometimes
    20plus

    Fifty Riders
    Reply With Quote Reply With Quote
  13. 03-15-2012, 11:59 PM #12
    eIghT-siX
    eIghT-siX is online now
    Senior Member
    This user has no status.
     
    eIghT-siX's Avatar
    Join Date
    Sep 2005
    Location
    T-Town
    Posts
    209
    stock throttle housing? they have a limiter. bad gas? did you look thru the main jet when you cleaned the carb? ive had a flake of sand stuck sideways in one before. acted kinda like a butterfly valve. could hardly see it.
    Reply With Quote Reply With Quote
  14. 03-16-2012, 12:01 AM #13
    LongMooie
    LongMooie is offline
    Senior Member
    is excited to test the big valve
    50cc ripper motor
     
    LongMooie's Avatar
    Join Date
    Jun 2005
    Location
    originaly UK! now Central valley, Cali
    Posts
    4,056
    If you have another bike you can swap parts out one at a time to locate the issue if there is a bad part
    CDI box
    coil
    stator

    the only other mechanical thing you could check is the cam timing
    and i know this might sound silly but dump the fuel and put some fresh fuel in the tank
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Ads

Posting Permissions

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

Forum Rules

Similar Threads

  1. 2007 crf50
    By troyweaver in forum Complete Bikes For Sale - All makes and models
    Replies: 54
    Last Post: 03-22-2011, 07:02 PM
  2. 2007 crf50 OEM Plastics
    By rc164racer in forum CRF50/CRF70 Parts For Sale
    Replies: 0
    Last Post: 02-10-2010, 11:41 PM
  3. 2007 crf50
    By fhathog in forum Complete Bikes For Sale - All makes and models
    Replies: 1
    Last Post: 10-30-2009, 02:06 AM
  4. 2007 crf50
    By emr102378 in forum Complete Bikes For Sale - All makes and models
    Replies: 9
    Last Post: 08-11-2009, 02:40 PM
  5. 2007 crf50 mod
    By bigb2244 in forum Complete Bikes For Sale - All makes and models
    Replies: 3
    Last Post: 09-21-2008, 08:30 PM

Search tags for this page

07' crf50
,
2007 crf 50
,
2007 crf 50 air filter
,

2007 crf50

,
bigger air filter crf50
,

crf50 air filter

,
crf50 carb cleaning
,
crf50 carburetor cleaning
,
crf50 jetting
,
crf50f breaking up at full throttle
,
how to clean a crf50 carb
,
spokane craigslist
Click on a term to search for related topics.