Pilot jet too large?
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Pilot jet too large?
I have a 2003 with a woods pipe, stock silencer, vforce 3, and snorkel removed. I have jetted to where I thought it ran perfect until I went on a ride with a couple friends. After hours of just off of idle and very slow speeds my bike loaded up and began to fowl the plug. I got out on the road and it cleared out. I decided it is a little rich so I turned the air screw out another 1/4 turn (now at 2 turns out) I keep reading that a 38 is probably as small as I should go but it now seems that a 35 pilot is in order. The 148 main jet checks perfect if not a tad rich on the plug. starting at 4500 feet mnimum. usualy take off at 5500 and up. what do you all think?
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That's HIGH altitude. Give your bike what it wants....You're on the right track. Did it run better after the 1/4 turn? Go ahead and change it. You not going to hurt anything w/ the pilot....You'll know if it's too lean.
'91 KDX 200 Project $300 KDX
'95 KDX 200 Project $600 KDX
'94 WR 250 Always a project
'95 KDX 200 Project $600 KDX
'94 WR 250 Always a project
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Mostly same bike as yours except I have the carb and head mods.
I use 150/38 (normal hot Phoenix summer) or 148/35 (June & July hot Phoenix) at 1200 MSL.
For 7,000 in Flagstaff I've gone down to 145/35. Never done a plug chop up there, but it runs as well as I would expect it to that high.
I use 150/38 (normal hot Phoenix summer) or 148/35 (June & July hot Phoenix) at 1200 MSL.
For 7,000 in Flagstaff I've gone down to 145/35. Never done a plug chop up there, but it runs as well as I would expect it to that high.
I done KX-ed QuailChaser's KDX220R
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