The BSA A7-A10 Forum

Technical => A7 & A10 Engine => Topic started by: huddie on 14.04. 2010 15:09

Title: Why would she not start?
Post by: huddie on 14.04. 2010 15:09
Hi You Guys, Did a 25 mile run yesterday, georgeous weather. This run was to take the mileage up to 50 since a full rebuild prior to torqueing the head again and starting a full running in program. I stopped about a mile from home for a photo shoot by a dis-used garage, the relic pumps are still there. Got my Shots went to start it up for the mile home, no joy!!. fuel was ok! By this time she had cooled down quite a bit but wasnt stone cold. Like a wally I had no mobile phone and no coins/keys with which to open the tool box. I tried for about 1/2 an hour still no joy so I pushed it home!!
I decided a step by step diagnosis was required. First I disconnected the kill switch wire to the mag as this was the last thing I did to stop her. Tickled the carb, away she goes first kick. Re-connected the wire thinking that would prove it but alas she fired up straight away!!.
I am going to go for another run tomorrow, no stopping til I get home and then leave it for 20 mins and try starting her again.

Any ideas why a warm/start should be a problem!!
Title: Re: Why would she not start?
Post by: MG on 14.04. 2010 16:21
Sorry to hear that, I hope you are not too frustrated.

Did you have the mag rebuilt?
Could be a faulty condenser (or armature).

Cheers, Markus
Title: Re: Why would she not start?
Post by: LJ. on 14.04. 2010 21:40
Hmmmm process of elimination I think... sticking kill switch? much sympathy for pushing an A10 home, you soon get to realise just how heavy the bike is.... got the t shirt! Hope you get sorted out soon.
Title: Re: Why would she not start?
Post by: Josh Cox on 14.04. 2010 23:03
Quote
you soon get to realise just how heavy the bike is

I had my bike weighed last week, with a full tank of gas, 201 KG (442 LBS for you old farts *smile*).
Title: Re: Why would she not start?
Post by: wilko on 15.04. 2010 00:37
Check that little plastic mesh screen inside your banjo fitting on the monobloc.Mine is always semi blocked with crud allowing only just enough fuel to flow.Also these twins need lots 'o tickling hot or cold. How long does it take to dribble fuel whilst tickling? This is a giveaway!
Title: Re: Why would she not start?
Post by: huddie on 15.04. 2010 19:16
Thanks for your concern re pushing it home, to many hours gone into this one to abandon her. Haven't tried her again today, work got in the way. For you Markus, yes the mag was rebuilt about a year ago when she was first assembled from the basket case she was. Thanks wilko, will check the gauze. I have never checked how many depressions of the tickler before it dribbles, but I will now.

Regards to all Huddie