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Messages - MGILBERT

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Singles / Re: (bsa b25 starfire poor starting
« on: 01 February, 2020, 18:27:22 »
HI. When quirting  carb cleaner into the pilot air screw hole, fluid came out of those two small holes which are located in the base  of the carb. cheers

Singles / Re: (bsa b25 starfire poor starting
« on: 01 February, 2020, 17:37:06 »
Well another afternoon in the garage with GOOD results i hope. Carb stripped and cleaned again but cleaning the pilot jet this time around, and then cleaned spark plug and reset, and then drained refilled system with new fuel.

Results. Now staring 3rd /4 the kick. Now just wants finer tuning to obtain a nice tick over etc. Bike pulls well.

Singles / Re: (bsa b25 starfire poor starting
« on: 31 January, 2020, 20:15:50 »
thanks dean for your input.
yes using the tickler, and fuel coming out.

regarding your other comment. to weak to start? it got me thinking , i have not cleaned the pilot jet which is situated behind the pilot air screw , so with that cleaned and re set could make the mixture richer. Hoping that make sense. bfn mike

Singles / (bsa b25 starfire poor starting
« on: 31 January, 2020, 17:19:42 »
Hi . Hoping someone can help, before i loose my rag and throw the teddy out of the pram.

I have a 1970 Bsa  B25 Starfire which is very difficult to start.i have a good spark, but its taking an age to prime the plug with petrol.
Carb fitted is Amal 928 concentric with all factory settings.
Carb has been rebuilt with new throttle slide,pilot air screw,throttle stop, the only item i have not replaced is the throttle needle.

I can take up to 25/30 kicks before its fires ,then running and restarting no problem.

When you remove the spark plug having primed/kicked you would expect the plug to be wet, not the case. Clutch adjusted so engine not slipping whist starting/running.
Yes the bike has been idle for a little while , so how can i improve the starting technique?

Bike performs well on the road, and very happy once its going

any advise would be helpful. cheers.



Singles / Re: B25 with Hiccups
« on: 15 July, 2019, 18:35:46 »
i had a similiar problem with my b25, albeit at 50 mph.  check your condensor connections. mine had vibrated loose. bfn mike

Singles / Re: bsa starfire b25, will not idle
« on: 13 July, 2019, 15:30:23 »
To be honest i didnt try a complete cable width as the blockage is found at the 90 degree turn within the galleries, approached the 90 degree turn from both ends of galleries.
then flushed the system with carb cleaner 

Singles / Re: B31 Loss of power
« on: 13 July, 2019, 07:12:38 »
When you have fitted your new plug, recheck carb/mixture, sounds like its running to weak/hot. plug should be a light brown/biscuit colour.
bfn mike

Singles / Re: bsa starfire b25, will not idle
« on: 12 July, 2019, 20:59:17 »
HI Guys. Checked out the you tube video and completed the job.  WE NOW HAVE A GOOD IDLE/TICKOVER.
Thanks guys.

Singles / bsa starfire b25, will not idle
« on: 11 July, 2019, 17:45:09 »
Hi guys.

I have for some time suffered on my B25 Starfirel with engine not idling,.currently fitted with Amal 900 concentric  Carb. Have currently replaced .
throttle slide
main jet
pilot jet
throttle stop
cleaned carb

Have also replaced condensor to cure misfire over 55mph. sorted.

Just ordered a replacement air screw.
Any thought/help would be appreciated.



Singles / Re: 1970 b25 starfire
« on: 03 April, 2017, 18:50:29 »
Thanks for the info Dean.Will have a look at the weekend. cheers. Mike :

Singles / 1970 b25 starfire
« on: 01 April, 2017, 15:51:55 »
Hi guys

i am having a misfire underload, albeit when reaching 55mph (cruise speed)/and 30 miles into ride all is well. Any ideas? Engine has recently
been rebored etc and still running in ?

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