Electric Start Question

2008 CRF450X

05r Cam

162 Main Jet

R and D Fuel Screw

NCYS Needle in 3rd Clip

Stock Pilot, Leak Jets

Pro Circuit Full Exhaust

Stock Air Filter and Backfire Screen

I have been fumbling around with a carb issue for the last few days which has led to a dead battery which means no e-start. First off, the bike started and ran great around the block a month ago when I pulled the 02r cam and installed the 05r cam. Before that, no problems at all. As soon as I get home from vacation the other day I go to start it and it dumps about a half cup of gas on the ground through the carb hoses. Then it started with the choke on, backfired and died. Then it started with the choke on and dies when I turn the choke off. So I'm pretty sure that is a pilot jet issue and have disassembled the carb for a full cleaning. Before this, the bike ran great, but I am still open to suggestions. So the first time I kick my bike during all of this, I can hear the e-start 'wind' inside the motor. Now, I may be digging, but is this an issue? Is the e-start dragging on the motor and possibly bogging it so it can't idle? When was checking the valves, I turn the motor with the Allen socket in the right crankcase and it seemed like it wanted to go backward a couple times. I know it's probably a simple issue that I'm blowing out of proportion, but I wanted to see what anyone else thinks.


With the fuel leaking out it could be a stuck float.

I pulled the carb and did a clean up with no obvious results. It seemed clean. The fuel dumped out, like real fast.

Did you lose the tiny o-ring on the fuel screw? Or is it worn? The tip of the screw can also wear

It turns out the hot start cable was pinched between the gas tank and frame. Sometimes I hate my own stupidity.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By cmckay4
      Anyone having or had problems with the starter not turning over easily on the 450X???
      I have read about this problem on CRF's ONLY and not seen anyone come up with a fix.
      Problem being is that you think there is a problem with the battery, when infact the battery is OK. When you have a good fully charged battery in the bike and press the e-start, it turns over very slowly.
      I have checked the electrical circuit and it seems OK. I am wondering if it might be the starter itself - any suggestions?????
    • By Dust_Devil
      I'll start, if you see the "Fox Sticker" out in the Dez you know you crossed paths with ol' DD.....

    • By JohnnyAirtime

      Guys and Gals...
      Post your links to any of your pictures in this thread....
      (proper placement of pictures is in the "picture" threads)
      Post your links to any of your ride reports in this thread....
      (proper placement of your ride reports is relative to the area you live/ride)
      NO TECHNICAL issues, questions or comments in this thread.
      (it'll be deleted to keep this thread clean and with only the above listed).

      Please follow this format;
      Ride Report: Gorman, Tuesday 4-17
      (by Skoot22)
      Pictures from Ride: Baja 4.14.07
      (by Johnnyairtime)
    • By dakynz
      Guys, because of a member ban the jetting database has been removed. Let's start a new one to get this great information created into a sticky for everyone's benefit. Please stick to the information below.
      Temperature Range:
      Smog (AIS):
      Airbox Modified Top:
      Airbox Modified Sides:
      Backfire Screen:
      Air Filter:
      Pilot Jet:
      Main Jet:
      Needle Clip Position:
      Fuel Screw Type:
      Fuel Screw Setting:
      AP Modified:
      Leak Jet:
      AP Cover:
      Exhaust Type:
      Exhaust Modified:
      Pink Wire Modified:
    • By 2can
      I've studied the Jetting sticky's but still have a number of questions:
      I bought my '06 a couple of years ago and had a smog block-off kit installed and the pilot jet was upsized to a 48 and the air box opened up top only. The bike has appeared to run a little lean at times and got hot on a couple of occasions in elevation and on one other occasion. I'm looking at upping the main jet to either a 165 or 170 to help with the possible lean condition. The bike currently has a 142 main jet in it which I believe is the stock size. It looks like the most widely used Needle Jets are the JD Red, but it doesn't look like they are sold separately, is this correct?
      I was going to also get a 45 pilot to have options for further tuning. My assumption is that every bike is a little different and that where you ride is going to have a lot to do with jetting. We ride mostly, mojave desert, baja, and southern Utah with elevations from sea level to 9,000 feet but the higher elevations are generally for a short period as we generally continue through the peaks and head back down.
      I'm looking to convert from a stock exhaust to possibly an FMF Q4. I want something a little throatier but not overly loud and will provide a balanced flow of intake/exhaust.
      So can I get the JD Red Needle Jet by itself or can I get by using the stock and move the clip and be just as happy. I'm just looking to enhance overall performance of the engine and maintain reliability.