Author Topic: not running right  (Read 667 times)

0 Members and 1 Guest are viewing this topic.

Offline elevensies

  • Full Member
  • *
  • Posts: 98
  • Country: gb
  • Location: lincolnshire
not running right
« on: April 15, 2019, 04:09:40 pm »
only me with more useless drivel about the wreck i own,

ok, Ian did a great job sorting clutch out, i now see how straightforward that process was. Iv taken him up on his advice about what to buy to sort it, and on dealing with the carb issues it has / had, and deleted the choke assembly

carb is a 274 (not a 289 as i was advised)

starts up well after a few pokes of the tickler

tick over adjusted to tick over

2 mins ticking over it cuts out

press tickler again, starts up and does exactly above

iv screwed in the air screw, does the same, iv screwed out the air screw, does the same.

iv managed to ride bike 10foot with throttle needing to be full open, and then it cuts out.

follow the same routine and starts etc etc etc
iv lifted the float, but it just overflows immediately

all suggestions welcome please

Offline Paul S

  • Bronze Member
  • **
  • Posts: 1080
  • Country: gb
Re: not running right
« Reply #1 on: April 15, 2019, 04:39:58 pm »
Just a thought...Is the bike on the centre stand or a side stand? If they are left ticking over on the side stand they will do just as you describe.
Growing old is compulsory, but growing up is optional.
1955 C12
1961 Greeves Scottish
1998 Kawasaki zzr600
1967 Triumph Vitesse 2 ltr convertible
1959 BSA C1000

Online camman3

  • Moderator
  • Gold Member
  • ****
  • Posts: 7275
  • Country: gb
  • The more I know, the less I understand......in UK
Re: not running right
« Reply #2 on: April 15, 2019, 04:55:17 pm »
As you say it is cutting out almost immediately you pull away, even with full throttle, it sounds like fuel starvation.
Is the tank cap vent clear? if you disconnect fuel line, does fuel flow freely?, if not, does it flow if you remove cap?

Graham
1957 C12
In sunny (sometimes) Christchurch, Dorset, UK

Offline elevensies

  • Full Member
  • *
  • Posts: 98
  • Country: gb
  • Location: lincolnshire
Re: not running right
« Reply #3 on: April 15, 2019, 05:42:38 pm »
centre stand only
yeah fuel flows very well with fuel cap on

Offline ianinglis

  • Silver Member
  • ***
  • Posts: 2563
  • Country: england
  • FROM SPROATLEY NEAR HULL EAST YORKSHIRE
Re: not running right
« Reply #4 on: April 15, 2019, 05:46:11 pm »
you need to try another carb - i have a concentric AMAL. they were fitted to most british bikes from around the mid sixties and it worked ok on my C10L
you can try that but you may have to change the main jet
i will dig it out and check it over


ian
BSA C10L 1956 - JFO 588
BSA C10L 1954 - MVE 107
RM6 RALEIGH RUNABOUT
ENFIELD DIESEL KUBOTA OC 95
BSA M21 RIGID RKN 816
CBF 1000
BSA ARIEL 3

Offline Tman

  • Silver Member
  • ***
  • Posts: 2249
  • Country: england
Re: not running right
« Reply #5 on: April 15, 2019, 07:05:46 pm »
I'd start by checking the pilot jet and it's associated drillings, and then on to float height.

Offline ianinglis

  • Silver Member
  • ***
  • Posts: 2563
  • Country: england
  • FROM SPROATLEY NEAR HULL EAST YORKSHIRE
Re: not running right
« Reply #6 on: April 15, 2019, 08:01:26 pm »
the concentric i have is complete and ready to go
i also have various jets from 80 up to 300
its the smallest concentric available at 22mm bore but it should work ok


ian
BSA C10L 1956 - JFO 588
BSA C10L 1954 - MVE 107
RM6 RALEIGH RUNABOUT
ENFIELD DIESEL KUBOTA OC 95
BSA M21 RIGID RKN 816
CBF 1000
BSA ARIEL 3

Online chaterlea25

  • Silver Member
  • ***
  • Posts: 2576
  • Country: ie
  • nr Cork Rep of Ireland
  • Location: Nr. Cork
Re: not running right
« Reply #7 on: April 15, 2019, 09:33:51 pm »
Hi All,
It sounds like theres crap in the carb slow running drillings (pilot jet) or a worn out carb
attached is a pic of the jet block that need to be removed to clean them properly

John

Offline elevensies

  • Full Member
  • *
  • Posts: 98
  • Country: gb
  • Location: lincolnshire
Re: not running right
« Reply #8 on: April 15, 2019, 10:45:53 pm »
thanks ian, will message you tomorrow

Offline elevensies

  • Full Member
  • *
  • Posts: 98
  • Country: gb
  • Location: lincolnshire
Re: not running right
« Reply #9 on: April 16, 2019, 06:58:21 pm »
well i nearly went out on the bike, i got brakes sorted, seemed to be running up and down driveway ok,
got helmet on, opened gate

wouldn't start.

there's always tomorrow, its spluttering and coughing like a heavy smoker, so issues still there

Offline kdm

  • Full Member
  • *
  • Posts: 46
  • Country: scotland
  • Location: inverness
Re: not running right
« Reply #10 on: April 16, 2019, 08:45:04 pm »
we have all been there....
1954 C11g

Online donkey

  • Full Member
  • *
  • Posts: 651
  • Country: gb
  • Deamed slow,please excuse grammer.
  • Location: North East uk
Re: not running right
« Reply #11 on: April 16, 2019, 09:12:24 pm »
The joy of old clunkers as kdm said we have all been there and will probably keep going there as its all part of the thrill  ???
donkey

Online timsdad

  • Gold Member
  • ****
  • Posts: 7223
  • Country: england
Re: not running right
« Reply #12 on: April 17, 2019, 06:15:46 am »
You just speak for yourselves, you last two!

Ray
Just a motorcyclist.

Online donkey

  • Full Member
  • *
  • Posts: 651
  • Country: gb
  • Deamed slow,please excuse grammer.
  • Location: North East uk
Re: not running right
« Reply #13 on: April 17, 2019, 07:30:27 am »
OK Ray not a problem no one listens anyway
donkey

Offline Tman

  • Silver Member
  • ***
  • Posts: 2249
  • Country: england
Re: not running right
« Reply #14 on: April 17, 2019, 09:03:53 am »
If we just wanted press-and-go reliability we'd buy new bikes rather than mess with long-obsolete machinery.. ;)