Popping back through carb during warm up.

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Popping back through carb during warm up.#72066

By Bullet Whisperer - Sun Nov 12, 2017 6:42 pm

- Sun Nov 12, 2017 6:42 pm #72066

Retarding the inlet cams in everything I have done it with, apart from that AJS, has brought benefits. It is easy to do - and undo if necessary and worth a try in my book. The youtube link I gave above doesn't seem to access all of the videos, but this one should work ... https://www.youtube.com/my_videos?o=U

Popping back through carb during warm up.#72067

By Bullet Whisperer - Sun Nov 12, 2017 7:04 pm

- Sun Nov 12, 2017 7:04 pm #72067

This video might be of interest re exhaust systems, spitting back and idling etc ... https://youtu.be/owIQcjBfDAQ

Popping back through carb during warm up.#72068

By papasmurf - Sun Nov 12, 2017 7:07 pm

- Sun Nov 12, 2017 7:07 pm #72068

That link does not work either.

Popping back through carb during warm up.#72069

By papasmurf - Sun Nov 12, 2017 7:09 pm

- Sun Nov 12, 2017 7:09 pm #72069

Is this the right one:-

Popping back through carb during warm up.#72070

By Bullet Whisperer - Sun Nov 12, 2017 7:15 pm

- Sun Nov 12, 2017 7:15 pm #72070

Thanks for trying, papasmurf, but that last link opens ok for me and shows the 612cc bobber 'Slo Poke' undergoing light experimentation with the exhaust system. Regards, Paul.

Popping back through carb during warm up.#72074

By Alan R - Sun Nov 12, 2017 8:30 pm

- Sun Nov 12, 2017 8:30 pm #72074

Hello TREW BIKER----OK, so whilst the "Brains Trust" are debating the issue, go to our hosts catalogue and on page 18 you will find the recommended jetting for various different set-ups.......I take it you still have the original 28mm Mikcarb fitted ??........Be honest with yourself as to what air filtering there is / isn't fitted.....

Popping back through carb during warm up.#72075

By Alan R - Sun Nov 12, 2017 8:45 pm

- Sun Nov 12, 2017 8:45 pm #72075

Hi BW & P-Smurf, that link opened ok for me also---Slo-Poke going over the Level crossing etc..

Popping back through carb during warm up.#72086

By Paulk - Mon Nov 13, 2017 8:48 am

- Mon Nov 13, 2017 8:48 am #72086

"Once started, it pops back through the carb if I try to give it any revs until its warmed up" - are you knocking the "choke" off too soon? "occasionally popping and stalling when I pull off" I would re-check the pilot air screw setting according to the set up procedure not just 1.5 turns out. Also if Mikcarb check float height. Last step if it still stalls after warm - new slide as per Tim. Good luck.

Popping back through carb during warm up.#72088

By Trew Biker - Mon Nov 13, 2017 8:56 am

- Mon Nov 13, 2017 8:56 am #72088

Hi Alan R, I will check the jetting according to our hosts and with the bellmouth fitted to the crb. It came on the bike when I bought it in June and I am thinking of fitting a cone filter instead so If there are jetting changes to make I can do them according to the filter I fit.
Thanks to the others, the technical information is very interesting and helps a lot if I decide to do stage 2, the cam retard.

Popping back through carb during warm up.#72113

By Trew Biker - Tue Nov 14, 2017 8:53 am

- Tue Nov 14, 2017 8:53 am #72113

I have checkrd the carb and the pilog jet and slide are not right and the float is half full of fuel so the level is wrong. Parts are ordered but the float is out of stock so repair may be on the cards. That will be interesting.