flat spot

4 replies to this topic
  • alarming

Posted July 22, 2000 - 06:03 PM


i've got a small flat spot just of idle and it is really pissing me off....right in the power sweet spot i use for climbing slippery steep hill climbs
any help would be great

  • James_Dean

Posted July 22, 2000 - 07:01 PM


Is this something new for your bike? What are your current carb settings, mods, model and year?

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  • alarming

Posted July 22, 2000 - 11:41 PM


I had the carb off striped and cleaned & reassembled now there is a flat stop at low engine rpm with high load eg(steep slippery clay hil)checked adjustment of throtle cable and accelerator pump clearance .I had the carb of because of h20 in carb and the bloody thing won't run.
The bike is going fine apart from the flat spot.........help as i enjoy the steep techy hill climbs.

  • RodH

Posted July 22, 2000 - 11:51 PM


Did you make sure that your pilot screw is set at the corect position ?
The reason I ask this is that put in a carbon fibre air box, and a few more disks in the E-Series, a 48 pilot and 170 main.
It was now a rocket right through the rev range, ecept the flat spot right off the bottom, then I went out another 1/2 a turn on the pilot screw, and it's 99.9% perfect.

RodH Canberra, Australia<A HREF="http://www.400thumpers.com" TARGET=_blank>
400 Thumpers Australia</A>
2000 WR400F See Photo's and Modifications

  • James_Dean

Posted July 24, 2000 - 05:11 PM


Have you sorted the problem out? Was there moisture or crud in the carb still?


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