JeJeBul198 Posted November 29, 2021 Report Share Posted November 29, 2021 hello, I have a problem with my bultaco sherpa. the bike don't want to take turns. it is very soft on acceleration. I have a well adjusted carburatzur phbl26. What is the problem. thank you Quote Link to comment Share on other sites More sharing options...
b40rt Posted November 29, 2021 Report Share Posted November 29, 2021 Is your timing correct ? Quote Link to comment Share on other sites More sharing options...
JeJeBul198 Posted November 29, 2021 Author Report Share Posted November 29, 2021 I have levistronic Rp5 Quote Link to comment Share on other sites More sharing options...
sherpa325 Posted November 30, 2021 Report Share Posted November 30, 2021 Was it running OK before you changed the ignition or did it happen after you changed to the Dellorto Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted November 30, 2021 Report Share Posted November 30, 2021 (edited) As Sherpa325 says you must find out "what is wrong with what" before trying to rectify it. If you suspect the Dellorto, test OKO. Pay attention to the air filter and how the carb is connected to the air box. I found out this is very important OKO can be bought here http://www.mid-atlantictrials.com/Bultaco.html Edit Spelling error Edited December 2, 2021 by carl ekblom Quote Link to comment Share on other sites More sharing options...
peterb Posted November 30, 2021 Report Share Posted November 30, 2021 Can you advise the pilot, main jets, and needle type in the Dellorto. Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted December 3, 2021 Report Share Posted December 3, 2021 Tried different PHBL combinations. This is one of the latest Idle 25 Needle 266K Needle jet D36 Throttle 60 Main 115 Thought first it was very nice. Strong mid throttle and full throttle Later found out it was little weak at low throttle. Perhaps PHBH is more all round. Also more period. OKO or Mikuni for Bultaco is more all round. Today OKO is my first choice. However OKO may not be permitted for competition everywhere. But flat slide is period Quote Link to comment Share on other sites More sharing options...
JeJeBul198 Posted December 3, 2021 Author Report Share Posted December 3, 2021 what setting with Oko ? Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted December 3, 2021 Report Share Posted December 3, 2021 Main 112 Idle 50 Needle Quote Link to comment Share on other sites More sharing options...
carl ekblom Posted December 3, 2021 Report Share Posted December 3, 2021 Needle JJH All jettings for 199A and OKO quite cold (late autumn) Basically the Mid-Atlanics jetting 1 Quote Link to comment Share on other sites More sharing options...
JeJeBul198 Posted December 8, 2021 Author Report Share Posted December 8, 2021 Levistronic RP5 --> HS Timing is not correct Quote Link to comment Share on other sites More sharing options...
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