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2000 DRZ400 idle problems/hesitation

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2000 DRZ 400 with Baja kit to make it street legal (I'm in Kauai). It has an FMF powercore IV pipe, K&N filter, and I assume the carbs were jetted to match the pipe. (the local dealer said it wouldn't run well if it wasn't)

I don't know if it is an S or E model (how can I tell?)

I've had the bike for about a year, it was running great when I parked it in March. I drained the carbs before I parked it.

Started it back up in May (it sat for 3 months) and started up no problem, but it started to hesitate on initial acceleration after changing gears. It wasn't a big deal so I kept on riding it and the condition has slowly gotten worse.

My friend took the carb apart, as I suspected it could have clogged jets, but everything looked fine. He adjusted the float bowl height, as it was a little off spec. It still hesitates when I accelerate after changing gear, usually around 5500 RPM. It runs great on full throttle, but sputters on half throttle above 5000 RPM.

It now has a hard time idling. Struggles to idle around 1100 RPM and dies. The bike has a hard time starting when it's warm now.

Any input is greatly appreciated. :thumbsup:

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2000 DRZ 400 with Baja kit to make it street legal (I'm in Kauai). It has an FMF powercore IV pipe, K&N filter, and I assume the carbs were jetted to match the pipe. (the local dealer said it wouldn't run well if it wasn't)

I don't know if it is an S or E model (how can I tell?)

I've had the bike for about a year, it was running great when I parked it in March. I drained the carbs before I parked it.

Started it back up in May (it sat for 3 months) and started up no problem, but it started to hesitate on initial acceleration after changing gears. It wasn't a big deal so I kept on riding it and the condition has slowly gotten worse.

My friend took the carb apart, as I suspected it could have clogged jets, but everything looked fine. He adjusted the float bowl height, as it was a little off spec. It still hesitates when I accelerate after changing gear, usually around 5500 RPM. It runs great on full throttle, but sputters on half throttle above 5000 RPM.

It now has a hard time idling. Struggles to idle around 1100 RPM and dies. The bike has a hard time starting when it's warm now.

Any input is greatly appreciated. :ride:

What are the current jetting settings? If you read the left side of the steering in-between the headlight and the forks it should say next to the vin e or s model...I believe you probably have an e since you said it didn't have lights to begin with...as for carb(s) there's only one (I hope :thumbsup:) lol. But in all seriousness jetting settings would be important.

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Dump the fuel and add some fresh..Replace the pilot jet..

Get your friend to remove the carb for you and Check what jets are installed...If it's got a jet kit the needle will have adjustment grooves(clip positions) in the upper half...

What size is the inlet on top of the airbox ?

Edited by CraigoDRZ400sm
text error..

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thanks guys i will get back to you with the jetting info
cheers
What was the issue?

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