1957 M16 not running properly

General purpose topics/chat goes in here
Locked
ChrisTheChippy
Member
Posts: 274
Joined: Wed Feb 07, 2018 12:02 am
Location: Essex

Re: 1957 M16 not running properly

Post by ChrisTheChippy »

Hi think this is one of those problems where you have to be patient and persistent . If you are now satisfied that the carb is spot on then look for another cause . Have you considered that one of the valves might be sticking ? Have a quick look at the top end just to eliminate that potential cause .
Cheers Chris
User avatar
Expat
Member
Posts: 1033
Joined: Thu Nov 12, 2015 2:22 pm
Location: Tennessee, USA

Re: 1957 M16 not running properly

Post by Expat »

Any possibility valve timing is off? ;)
Keep shiny side up.

These are my principles, if you don’t like them, I have others. (Groucho Marx)
User avatar
Janet
Member
Posts: 4147
Joined: Mon Jan 01, 1996 12:00 am
Location: EAST YORKSHIRE UK

Re: 1957 M16 not running properly

Post by Janet »

I tentatively alluded to a valve problem back on page 2 so I assume that it had been considered and dismissed.
Image
Plugsnpoints
Deceased
Posts: 598
Joined: Sun Oct 07, 2018 11:36 pm
Location: Essex UK

Re: 1957 M16 not running properly

Post by Plugsnpoints »

Not at all. The valves are on my list of things to look at this weekend. I thought I'd look at the more obvious (to me anyway) things first. Thanks :)
User avatar
Expat
Member
Posts: 1033
Joined: Thu Nov 12, 2015 2:22 pm
Location: Tennessee, USA

Re: 1957 M16 not running properly

Post by Expat »

Janet wrote:I tentatively alluded to a valve problem back on page 2 so I assume that it had been considered and dismissed.

Oops, my bad Janet. I didn't re read the topic or wouldn't have made the suggestion again.

:oops:

Steve
Keep shiny side up.

These are my principles, if you don’t like them, I have others. (Groucho Marx)
Plugsnpoints
Deceased
Posts: 598
Joined: Sun Oct 07, 2018 11:36 pm
Location: Essex UK

Re: 1957 M16 not running properly

Post by Plugsnpoints »

After several weeks/days/hours I have finally sussed it (thanks for asking! :rofl:) I had to use tweezers to pull any remaining hair out!

I bought a new coil just to eliminate it from the equation, the old one had been wrapped in foam under the tank and I assumed it might be cooked.


Anyway, after rebuilding the carb yet again, with the correct jets according to the book.



It's the advance retard unit that appears to be stuffed. I double checked the timing and it's spot on.


I experimented by wedging the unit fully open with lolly sticks. It fired up straight away and revs, ticks over and behaves itself with no unburnt fuel or pops and bangs. I am very happy.




What I would like to know is where do I locate a new advance retard unit for my points model M16.


Can anyone advise me on a part number and possible tell me what is compatible with it please? At a guess it might fit other singles like Beeza C15s or Tiger Cubs etc.?

Thanks in advance.

Andy
Mick D
Posts: 2886
Joined: Mon Mar 24, 2014 5:44 pm
Location: Aberdeenshire

Re: 1957 M16 not running properly

Post by Mick D »

Hi

There are Lucas manuals in the archive which will contain the info:

http://archives.jampot.dk/technical/Electric/

Regards Mick
User avatar
spookefoote1956
Member
Posts: 1836
Joined: Mon May 01, 2017 7:32 pm
Location: Wales Innit

Re: 1957 M16 not running properly

Post by spookefoote1956 »

https://www.ebay.ie/itm/Nos-Lucas-Auto- ... :rk:1:pf:0I would check with the appropriate parts lists available but this might do. Failing that try feked or draganfly I think ariel ones fit. Could be wrong though.
Hail Joe Lucas ............ Prince of Darkness!
All my bikes are original........ to me!
"Creativity is your intelligence having fun" Albert Einstein
alanengineer
Member
Posts: 1175
Joined: Wed Oct 12, 2005 10:45 pm
Location: KENT UK

Re: 1957 M16 not running properly

Post by alanengineer »

Are you setting the timing with the bobweights in their relaxed position or jammed open with lollypop sticks. I use the old wooden pegs. Made for the job
alanengineer
Member
Posts: 1175
Joined: Wed Oct 12, 2005 10:45 pm
Location: KENT UK

Re: 1957 M16 not running properly

Post by alanengineer »

And i think i read here recently, the a/r unit dosnt like its chain too tight

What do you think is wrong with the unit?
Locked