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TT FCR kit pilot and PAJ

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I just recieved and installed my TT FCR kit on my 2007 DRZ400S.  Everything went smooth and fit well.  Bike runs fantastic except there is a 0-1/4 throttle hesitation.  Below are my mods and jetting info.

 

Stock motor 

3x3

FMF Powercore 4 w/ FMF powerbomb header.  Open, no spark arrestor.

800' Above sea level.

- 200 Main Air Jet
- 160 Main Jet
- 45 Pilot Jet
- 100 Pilot Air Jet
- EMN Needle 3rd clip
- Fuel screw 2 turns out

Safety wired AP (o-ring mod)
 

I believe the pilot is rich.  Started with fuel screw at 2 turns.  Kept leaning it out to where it is now.  I am 1/2 turn out on the fuel screw and the hesitation is much better, but still there.  I can also completely close the fuel screw and bike will stay running fine.  I know that they say to keep the PAJ in the newer carbs.  I left the 100 in.  The picture in the TT install guide is a little confusing.  It says it is a 200 PAJ and to leave it in.  Searched and could not even find a 200 PAJ..........  

I've also read that guys leave the 100 PAJ in and go to a 42 pilot.  I'm thinking this is my best bet as I believe the pilot circuit is to rich with the 100 PAJ and 45 pilot.  Any suggestions or thoughts are appreciated.  

 

I will say this......... Night and day!!!  This bike should have come with an FCR on it from the factory.  

 

 

 

 

Edited by 1MEANGT

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Just now, ohiodrz400sm said:

Is it at steady throttle or when you blip it?

Steady throttle.  

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EMN needle 3rd clip.  It is at very light steady throttle only.  0 - 1/4 steady throttle

Edited by 1MEANGT

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If your idle is too high then the bike is actually running off the needle as oppose to the pilot. The kit should have included the EMN needle which is richer at closed throttle. An "R" is lean and sounds like a Tommy gun during deceleration.

If you didn't do the O-ring mod you will have hesitation/ bogging to quick throttle input.

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5 minutes ago, ohiodrz400sm said:

If your idle is too high then the bike is actually running off the needle as oppose to the pilot. The kit should have included the EMN needle which is richer at closed throttle. An "R" is lean and sounds like a Tommy gun during deceleration.

If you didn't do the O-ring mod you will have hesitation/ bogging to quick throttle input.

I am running the EMN needle 3rd clip.  With 2 turns out on the fuel screw I get absolutely no popping on deceleration.  At 1/2 turn out on the fuel screw I am now just starting to get a little popping on decel.  So I believe I am to rich.  I do not believe the idle is to high either.

o-ring mod was done with safety wire.  Bike has no bog and feels strong everywhere in the throttle.  

Cruising at very light throttle is where i get the hesitation.  

Edited by 1MEANGT

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Sorry didn't see the wired mod.

Did you double check the float level? Rough handling could of knocked it out of range. Too high will cause a rich condition. If it measures between 8-9mm then I would agree you should try a leaner pilot.

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1 minute ago, ohiodrz400sm said:

Sorry didn't see the wired mod.

Did you double check the float level? Rough handling could of knocked it out of range. Too high will cause a rich condition. If it measures between 8-9mm then I would agree you should try a leaner pilot.

Thanks.  I will go ahead and order a 42 pilot.  When it comes in I will check the float level but I was pretty gentle with the carb.  If all looks good I will throw the 42 pilot in and go from there.  

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Just now, ohiodrz400sm said:

Although, if the hesitation is closer to 1/4 than closed that is needle height position. You may want to try the 2nd clip .

Honestly it is probably closer to 0.  Super light steady throttle.  Give it a little more and she is fine.

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10 minutes ago, 1MEANGT said:

 With 2 turns out on the fuel screw I get absolutely no popping on deceleration.  At 1/2 turn out on the fuel screw I am now just starting to get a little popping on decel.  So I believe I am to rich.  I do not believe the idle is to high either.

The popping on decel is normal and indicative of lean, not rich. :)

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6 minutes ago, Bermudacat said:

The popping on decel is normal and indicative of lean, not rich. :)

When I lean out the fuel screw (1/2 turn out from closed) I just start to get a little popping in decel.  So with 2 turn out I am rich and have no popping on decel.  

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Just installed a 42 pilot and a NCYR needle.  WOW!!!  She is running like a top!  That snap!  The low end hesitation is gone and getting some popping on decel now.  Pulls hard all the way to the limiter.  Instant grin!

Here are my final setting.  Thanks again for all the input, I appreciate it.

- 200 Main Air Jet
- 160 Main Jet
- 42 Pilot Jet
- 100 Pilot Air Jet
- NCYR Needle 2nd clip
- Fuel screw 1 turn out

Safety wired AP (o-ring mod)

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