Can someone do me a favor and send me some photos of the routing for the negative battery cable from the engine case to the battery. I do not believe that mine is routed correctly and is always either trying to lay on the pipe or its in the way when I'm working on my carb. My email is wrenchhead427 at gmail.com Thanks, Travis.
wrenchhead427 posted a topic in Motorcycle Jetting & Fuel InjectionHi, I have a 2008 KLX450R that I am having trouble with. The bike is mostly stock but it has had the AIS delete done to it. This winter the bike has been impossible to start, I actually haven't been riding since last spring I think. I figured the Carb needed cleaned so I bought an All Balls rebuild kit and went through the carb. While I had it apart I adjusted the accelerator pump squirt to be as immediate and full as possible without wetting the slide, and did the oring mod. The jets in it were a 65 Start, 48 Pilot, 100 Pilot Air, 150 main and a 50 power/leakj jet. I cant remember where the fuel screw was, I doubt it was correct because my dad used to own the bike and he didn't know what the screw was for. So now I have reassembled the carb, put it back on the bike and tried to start it. I kicked it 20 to 30 times with different combinations of Choke on/off, 2 acc pump squirts, 3pump squirts, adjusting the idle screw and so on. I finally noticed it trying to fire.....barely....... when the choke was on and I had wicked the throttle 2 or 3 times. I then tried hitting the throttle halk way through the kick and it started. It ran with the choke on and died when I turned the choke off. I was able to keep it running with the throttle but it sounded like it was lean poping out the exhaust. I took the carb back off and installed a 45 Pilot but no change. I'm at a loss and frustrated. I have searched the posts and tried to do what was suggested including this - Fuel Screw/Pilot Jet Fuel screw settings in the 'book' are recommended starting points. Every bike is different, as is the temp and altitude. Set the screw according to this method. Do it with the bike fully heated up. Gently turn the screw all the way in. Now back it out two turns. Start the bike and fully warm it up, go for a 10 minute ride. Set the idle to speed to 1,500~1,800 RPM as best you can (I know, without a tach this is tough, just set it to were it idles relatively smoothly). Once warmed, slow the idle to the lowest possible speed. *** When turning the fuel screw, keep an accurate 'count' of the amount you are turning it and record it in case you have to reset it for some reason. Makes life easier when you can just set it from notes Vs. going through the procedure again.*** Turn the screw in until the idle becomes rough or the bike stalls. if it stalled, open the screw about 1/4 more turn. Restart it and slowly screw it in till you can just perceive a change. If the screw can be turned all the way in and the bike still idles perfectly and does not stall, then you need to go down a size in pilot jet. Now very slowly, open the fuel screw till the idle is smooth. Blip the throttle, let the bike return to an idle, wait say ten seconds. Confirm it is the same smooth idle. If the screw has to be opened more than 3 turns to get a smooth idle, you need to go up a size in pilot jet. If you find it does not stall with the larger jet but has to be open more than three turns with the smaller pilot jet, put the larger one in and set the fuel screw at 1/2 turn. If the idle speed increased, adjust the idle speed knob to return the bike to a real slow idle speed. You must then re-visit the fuel screw. Keep doing this till the fuel screw is opened just enough to provide a nice steady idle at the lowest possible RPM. Once this is done, increase the idle speed to the normal one for your bike, typically about 1,800 rpm, but go by the spec in your manual. Main jet comes into play at 7/8's throttle to WOT. I think you'll find you need to work on the pilot/fuel screw some. Follow the above instructions exactly. If I can't even get it to idle with the choke off how can I proceed at all? Please someone if you can help me I do appreciate it. My son just got an 02 XR 100 for Christmas and I want to go riding but this bike is taking all the fun out of it. I have struggled with this bike since day one and really hate it. I wish I had my old 91 kx250 still. I'm hoping that someone can restore my faith in these new Commifornia regulated motorcycles. Thanks, Travis