garydwall Posted October 28, 2022 Report Share Posted October 28, 2022 Hello. Can someone please help. My 2009 starts easily from cold. However when hot it gives a little backfire when kicking and eventually starts. I've done everything to try eliminate. Carb cleaned twice, new reeds, new plug, new plug cap , adjusted fuel screw etc etc. Have a 2008 which is much easier to start.... Any suggestions much appreciated. Thank you Quote Link to comment Share on other sites More sharing options...
garydwall Posted October 28, 2022 Author Report Share Posted October 28, 2022 Quote Link to comment Share on other sites More sharing options...
lineaway Posted October 28, 2022 Report Share Posted October 28, 2022 She be running lean. What size bike and what carb and your elevation. Quote Link to comment Share on other sites More sharing options...
garydwall Posted October 29, 2022 Author Report Share Posted October 29, 2022 250cc , dellorto, 300 mtrs above sea level.... Thank you lineaway Quote Link to comment Share on other sites More sharing options...
lineaway Posted October 29, 2022 Report Share Posted October 29, 2022 You need a 36 to 38 pilot and might want to go up one size of main jet. When you clean the carb you need to make sure the pilot circuit and the choke circuit blow clear. Good luck. 1 Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted October 30, 2022 Report Share Posted October 30, 2022 On 10/29/2022 at 12:29 AM, lineaway said: She be running lean. What size bike and what carb and your elevation. Elevation not applicable in uk. 1 Quote Link to comment Share on other sites More sharing options...
lineaway Posted October 30, 2022 Report Share Posted October 30, 2022 That`s hard to remember when we ride from 3,000 to 13,000 ft all the time. My home is at 6700ft. Quote Link to comment Share on other sites More sharing options...
Jeff B Posted October 30, 2022 Report Share Posted October 30, 2022 Had same problem. Newer, but same carb. Flip the choke on. Try that. Works on my bike. Stil, starts easier cold. 1 Quote Link to comment Share on other sites More sharing options...
eddie1 Posted October 30, 2022 Report Share Posted October 30, 2022 Something else to try is to pull it back in gear, as already mentioned, and give it a bit of throttle 1/8 or 1/4 turn. This seems to be necessary on the bikes with Keihn carbs. I even use a touch of throttle with the choke when its cold and that was always a no no with delorto. 1 Quote Link to comment Share on other sites More sharing options...
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