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Lean at Idle

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I am running lean at idle and adjusting the mixture screw will not resolve it.

I get a hanging idle and 99% sure its lean. I did the side cover off vs on run and no effect.

Outside of the idle the bike runs strong especially on top.

What should I change to add a bit a fuel at idle range of 1800-1900 RPM's.

 

My Setup is below and I have a Full MRD and 3x3 and K&N.

160 main jet
200 main air jet
EMN needle
clip 3
45 pilot jet
remove pilot air jet
2 turns fuel screw
o-ring mod

R&D Racing Flex Jet Fuel Mixture Screw

 

Thanks so much for any help you can give, I am struggling.

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I found the standard TT jetting to be really junky at low rpm's and at idle.

 

Try putting the #100 pilot air jet back in and drop the pilot jet to a 42 and also important the float level should be at 9mm.

 

 

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On 5/1/2017 at 6:52 PM, bumtarder said:

I found the standard TT jetting to be really junky at low rpm's and at idle.

 

Try putting the #100 pilot air jet back in and drop the pilot jet to a 42 and also important the float level should be at 9mm.

 

 

bumtarder I just made he changes you recommended and raptor petcock mod.

 

Wow what a huge difference down low, runs so much stronger on the lower end.

 

Thanks a million for the help, I really appreciate it.

 

For those interested here is where I ended up.

Sea level,aftermarket pipe with open muffler and BMC air filter.

TT Store FCR39 Kit

160 main jet
200 main air jet
EMN needle
clip 3
42 pilot jet
100 pilot air jet
2 turns fuel screw
o-ring mod

Float level at 9mm

R&D Racing Flex Jet Fuel Mixture Screw

 

 

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