carb help
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- Supporting Member II
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carb help
Ok, this one has thrown me for a loop. Cold my 03-200 hybrid idles really high compared to when its warm. Just this past week installed new top end (piston and cylinder). no change. Had the RB carb mod done just prior to the top end. No change. If I set the idle when bike is warm, it is crazy high when cold, as bad as having the choke pulled up. Current jetting..38 pilot, needle in 4 clip, 152 main. 1 1/2 out on screw. Ron sent carb out with 40 pilot, got lots crisper with the 38. Have checked for air leaks around the carb many times. Reeds appear to be fine, no craks or chips. What the He** am I over looking?
04 kx220 hybrid
03 kx 250
05 kdx 200
03 kx 250
05 kdx 200
- scheckaet
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that's normal. it will settle down once the bike is fully warm up.
02 KX 200 hybrid: RB head and carb
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
Sold ☹ DRZ 400 SM
bike build: http://www.kdxrider.net/forums/viewtopi ... ike+stable
bike profile http://www.kdxrider.net/forums/viewtopi ... 0709#30709
newb info: http://www.kdxrider.net/forums/viewtopi ... 57#p117919
jetting guide: http://www.kdxrider.net/forums/viewtopi ... 105&t=1156
- SS109
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Well, you are supposed to get the bike up to full temp before making any adjustments, carb or otherwise.ecojbr wrote:Makes setting my new revloc a pita !!!!
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Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
AZ State Parks & Trails OHV Ambassador - Trail Riders of Southern AZ
Current KDX: '98 KDX220
Old KDX: '90 KDX200 -White/Blue
'11 GasGas EC250R
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The idle speed on my KDX is annoyingly varying. When first starting from cold, it idles well (I have it set fairly high). After some slow woods riding, the idle speed drops considerably. After a high speed/high rev session, the idle speed returns to normal. I have inspected my carb and all of the parts closely, but I did not see anything wrong at all. I suspect a leaky float valve, though. It just does not bother me enough to warrant buying the parts yet...
I may try "T"-ing the vent lines though.
I may try "T"-ing the vent lines though.
2004 Dual Sported KDX200
1999 Ninja 250 (Daughter's)
1996 DR 650 (stock, mostly street use)
1999 Ninja 250 (Daughter's)
1996 DR 650 (stock, mostly street use)
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You'll have to buy one of those fuel injection programmers you see in the back of Dirt Rider Magazine and plug it into the connector under the seat...Oh wait, you just turn the screw on the left side of the carb.
The really small slotted screw is the air screw and the larger screw is idle speed. You should be able to turn the speed screw with your fingers.
The really small slotted screw is the air screw and the larger screw is idle speed. You should be able to turn the speed screw with your fingers.
KX 250, KDX 220, KDX 220, KDX 200, CR 80
I don't believe in a society where the thrill of living is traded for the safety of existance---Nick Inatsch
I don't believe in a society where the thrill of living is traded for the safety of existance---Nick Inatsch
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Or maybe I misunderstood your question.
If your question is the mechanical part of adjusting idle speed use the screw as mentioned above.
If your question is what do you set your idle speed to (rpm), I just set mine so it has a stable idle. If it is so slow that it wants to die then I speed it up a little but not so much that the bike won't slow down when I let off the throttle.
How well it idles also depends on idle fuel mixture. If it's too rich it will tend to load up and sputter to a stop (like the choke was on too long on your lawnmower or something). If it's too lean it will tend to stall abruptly and never really feel like it wants to idle at a stable speed anyway.
If your question is the mechanical part of adjusting idle speed use the screw as mentioned above.
If your question is what do you set your idle speed to (rpm), I just set mine so it has a stable idle. If it is so slow that it wants to die then I speed it up a little but not so much that the bike won't slow down when I let off the throttle.
How well it idles also depends on idle fuel mixture. If it's too rich it will tend to load up and sputter to a stop (like the choke was on too long on your lawnmower or something). If it's too lean it will tend to stall abruptly and never really feel like it wants to idle at a stable speed anyway.
KX 250, KDX 220, KDX 220, KDX 200, CR 80
I don't believe in a society where the thrill of living is traded for the safety of existance---Nick Inatsch
I don't believe in a society where the thrill of living is traded for the safety of existance---Nick Inatsch
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