Help and clarrification needed for fcr39 on 2001 DRZ400e

Back in May The Drz would loose power in the whoops. After checking found water in the Carb bowl and tank. Drained, cleaned and dried tank. Removed carb , cleaned jets and so forth. No jetting changes were made and no mods to carb done, i.e. (removal of CE and taffy mod). I did add seafoam green to the fuel thinking I could have missed something like build up somewhere I couldn't see. Well I rode a few more times after that but the problem continued and I became very frustrated. A few guys tried to help me in a prior post but I dropped the ball by never following back up with them.

This past weekend I decided to not let it whip me, so I removed the carb to clean it and get the jet info. Well I found what appeared to be dried greenish colored cheese consistency stuff all over the bowl, jets, etc. I now have a very clean and happy carb.

I'm listing jetting info and mods and other info for you guys. All your advice and help is much appreciated.

2001 DRZ 400E

Ridden mostly in Central Florida so Elev. is SL to 100ft 40's to 90's temp.

yoshi RS-3 slip on

Mods: Taffy mod and removal of coast enrichner

Pilot 45

Main 160

starter(i think) 65

Main air jet 200

Piot air or slow air 60

Needle is OBDXP 4th clip from top

2 turns out on the mixture needle

With the taffy mod I temp decided to loop the two ports on the carb together based on eddie's comments in another post. My plan is to get the 100 pilot air jet or PAS.

Do I need the 45 pilot jet with the 100 slow air jet?

Is the DXP needle ok with the above changes? or do I need the EMN ?

What other advice can ya'll offer?

Thanks in advance and sorry about the long winded post.


Check your float height.

Thanks William1 for replying

I did a search for how to adjust the float level and found info for the Fcr-mx, however I've got the older style non mx.

Would you provide instructions for a link that I can reference.

Also, any opinions or suggestion about the jetting info?

Same as the older style.

Eddie is the expert regarding the older style FCR and OBDXP needle, though I suspect you'd be better of on the 3rd clip.

yesterday went for 69mi ride in Ocala Nat'l forest here in Florida. Lots of water, packed sand, great ride.

The DRZ performed super. Some deceleration poping but I haven't got the 100 pilot air jet in. Really didn't notice any low end bog

Except for the poping on deceleration I'm pleased.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By Sammy_1101
      Hi Guys,
      So I recently bought a 1997 XR400. I've done some research into getting more power through some basic mods and rejetting the carbs. Though all of the ones I've found have been for post 98 XR400s so the stock carb set up is a lot different. Usually people are opening up the airbox, exhaust ect. ect. and Jetting their carbs up to 160/162 for mains around 60 ish (I think) for the pilot. However for the 97 model this is close to stock for the jets.
      So essentially what Im asking (Just to cut to the chase ) Has anyone got a 96/97 (maybe 98, not sure) XR400 and has done these similar mods, and what sort of jetting have to done as a result.
      Thanks in advanced, also its my first post so apologies if I havent done everything correctly.
    • By Jturn
      38MM Cast SmartCarb. Purchased a couple years ago for a yz250. Don't have the bike anymore, and it has been sitting around for about a year. Used, but in fine working condition. You can also purchase a different needle for different bikes, as well as rebuild kits from their website.
      Asking $250 shipped to continental United States. I can arrange other shipping options at the buyers expense.
    • By faizakhtar125
      Hey guys I just bought a bike last night. So the seller said the bike will turn on but then die. We didn't try it because it was really late at night and it was raining (seat was wet). But he said if you bump start it, it will turn on and ride. So what do you think the problem is? I just want to make sure it runs... I probably won't be able to bump start it till Saturday (rain)... It's a four stroke, and I know absolutely nothing about them. Thanks.
    • By knotduke08
      I know this topic has been discussed in the past, but I have not found any options available for the new 2018 bikes. I live and work for a new Beta Dealer (Auburn Extreme Powersports) in California, and we are having a difficult time mapping the RR-S bikes for full FMF exhausts. We have tried contacting Beta Support several times for this issue to no avail, and we typically are given the runaround when transferring to techs and secretaries. From what we can gather, the FMF flash is designed for the RR bikes, but not the street-legal counterparts. Every time we try to install the FMF map onto an RR-S errors occur, and the programmer screen goes virtually blank. We have heard through the grapevine that some are using the RR maps on the RR-S with success, but we have yet to try it, even on our own bikes for fear that it will permanently erase or damage the CDI. Any and all help or suggestions regarding this topic would surely be appreciated! Thanks, Ben.