Posted August 19, 2003 - 07:58 AM
Posted August 19, 2003 - 09:09 AM
It sounds like you have the EXACT same problem I have. I put the JD kit in last week (same jet and needle as you)and when I went to test it, it ran crappy through the middle. It was recommended that I cut the grey wire due to the fact that it changes the fuel mapping. I was told that it makes the fuel mapping much more steady and adjustable to un-hook the grey wire. Also JD himself told me that the 170mj, blue needle #4 is primarily for the WR426 and the WR450 has a little bit different carb therefore you probably need to go with 165mj, red needle middle position due to the fact that this carb likes a leaner configuration. I am changing the setup to this new one today as it's my first day off in awhile. I will definately let you know what happens. Believe ME I feel your pain....I would be lying if I said I wasn't a little disappointed when I shelled out $6399+tax and I can't get the thing to run really good yet. It didn't really run that great when I rolled it off the showroom floor. I just thought that it needed to be "broke in" ???!!!
Posted August 19, 2003 - 12:37 PM
Indy 450 has spent alot of time with the JD kit on his 450. He is running 160MJ and Red 5, a little over sea level.
Just a thought. Also missing is rich, weak is lean.
Posted August 19, 2003 - 11:09 AM
Posted August 19, 2003 - 01:14 PM
I am having the same problem with turning the fuel screw all the way in and the bike still runs pretty good. Prior to the JD kit It would stall if I turned the fuel screw in all the way in. I thought of changing the PJ to a #42 from a #45 but would have to order it cuz the 2 smallest PJ's I have are the stock 40 and 45. If I run the 40 PJ I will have to run the fuel screw out 3 or more turns and I am afraid at that setting it may fall out while riding. Over the weekend I changed the needle clip on the blue needle from #4 to #3 to lean it out. I got to ride Monday to test and found the popping or backfiring on start up was pretty constant and prior to going to #3 on the needle it only popped maybe 20% of the time. the temp has been in the 80's constantly around here but at sea level I didn't feel I needed the red needle. Maybe the blue needle #4, a 162 or 165 MJ with a #42 pj, fuel screw out 1 1/2- 2 turns will do it, I'm just not sure. THANKS for any advise!
Posted August 19, 2003 - 03:40 PM
Posted August 19, 2003 - 03:20 PM
Posted August 20, 2003 - 01:13 PM
Posted August 20, 2003 - 05:02 PM
Posted August 20, 2003 - 05:52 PM