The BSA A7-A10 Forum

Technical => A7 & A10 Engine => Topic started by: Padsta33 on 03.01. 2017 15:05

Title: Plugs...
Post by: Padsta33 on 03.01. 2017 15:05
Having issues starting (nothing unusual there) and noticed my plugs are old. Any recommendations for what plugs I should buy for "winter" starting?.Cheers guys.
Paddy.
Title: Re: Plugs...
Post by: Topdad on 03.01. 2017 15:25
I've never changed plugs for summer or winter so can't help with this .
Title: Re: Plugs...
Post by: metalflake11 on 03.01. 2017 15:57
Iron or ally head?
Title: Re: Plugs...
Post by: muskrat on 03.01. 2017 19:12
G'day Paddy.
You could try a grade hotter plug. NGK go down 1 number, Champion go up 1 number.
Colder winter air leans the mixture off a bit so it might also help richening the pilot 1/4 turn.
Cheers
Title: Re: Plugs...
Post by: Triton Thrasher on 03.01. 2017 23:04
There are no plugs "for winter starting."

Buy new plugs of the grade recommended for your bike and set the gaps to 0.018".
Title: Re: Plugs...
Post by: Rgs-Bill on 03.01. 2017 23:26
G'day Paddy.
You could try a grade hotter plug. NGK go down 1 number, Champion go up 1 number.
Colder winter air leans the mixture off a bit so it might also help richening the pilot 1/4 turn.
Cheers

G'day Paddy.
You could try a grade hotter plug. NGK go down 1 number, Champion go up 1 number.
Colder winter air leans the mixture off a bit so it might also help richening the pilot 1/4 turn.
Cheers

      Musky, maybe in the down under you still get good NGK plugs, here in the U S they are crap, 1 out of say 3 boxes is a dud.  Bosch burn better, cleaner, foul less, and go one hotter for the shi**y fuel.               Champions, (the cheapest made plugs on the planet) run well in these bikes, Bosch would be my first choice in the U S though.
Title: Re: Plugs...
Post by: Padsta33 on 04.01. 2017 06:33
Iron or ally head?
Iron...
Title: Re: Plugs...
Post by: Padsta33 on 04.01. 2017 06:40
G'day Paddy.
You could try a grade hotter plug. NGK go down 1 number, Champion go up 1 number.
Colder winter air leans the mixture off a bit so it might also help richening the pilot 1/4 turn.
Cheers
I took the pilot screw out a few weeks ago to clean the carb, but didn't note how many turns it took. So that may be an issue also, because back in summer she was starting 1st-2nd kick. How do I know how to set the pilot up again? Also had a complete maggy rebuild in spring 2016.
Title: Re: Plugs...
Post by: muskrat on 04.01. 2017 12:54
G'day Paddy.
I have a bad habit of missing the most simple things. TT is right, throw a new set in first NGK B6HS or equivalent in your fav brand.
Pilot screw 1 1/2 turns out from seated. Get the bike to operating temp (15 minute ride), set idle then adjust the screw in till she falters then turn out (count the turns) till she falters. turn in to half way between the two. Then re-adjust the idle. This should be pretty close, you might find it needs no more than an 1/8 turn either way to get a clean transition onto the slide.
This may not be the way the "book" says but it works for me.
Cheers
Title: Re: Plugs...
Post by: Padsta33 on 05.01. 2017 13:23
G'day Paddy.
I have a bad habit of missing the most simple things. TT is right, throw a new set in first NGK B6HS or equivalent in your fav brand.
Pilot screw 1 1/2 turns out from seated. Get the bike to operating temp (15 minute ride), set idle then adjust the screw in till she falters then turn out (count the turns) till she falters. turn in to half way between the two. Then re-adjust the idle. This should be pretty close, you might find it needs no more than an 1/8 turn either way to get a clean transition onto the slide.
This may not be the way the "book" says but it works for me.
Cheers
Thanks so much Muskrat. Really appreciate your info. I'm waiting on new plugs too arrive then I'll sort this ol girl out!
Cheers
Paddy.