MK2 wont tick over

twistednuts
Site Supporter
Site Supporter
Reactions:
Posts: 937
Joined: 07 Feb 2010, 00:37
Location: Lancashire
Re: MK2 wont tick over

Post by twistednuts » 17 Mar 2012, 23:23

You can test the float valve, but only to a certain extent, by checking it while the float bowl is off.

Whilst the carb is off, leave the float bowl off, connect the petrol pipe to the carb and hold the carb in your hand whilst switchin on the petrol. Do this over a bucket for obvious reasons.

If you gently lift and drop the float you can check the operation of the valve. Its only a rough test, but it can be helpful. Also give the float a shake to make sure its not damaged and lettin fuel in.

fallenmikethebike
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: MK2 wont tick over

Post by fallenmikethebike » 18 Mar 2012, 07:50

;) Wonder web, other guides available. google tuning, [your carb].
http://www.carbparts.com/keihin/needles ... r_carb.htm
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!

User avatar
Cadiddy
New kid on the block
New kid on the block
Reactions:
Posts: 47
Joined: 24 Jun 2010, 17:45
Re: MK2 wont tick over

Post by Cadiddy » 19 Mar 2012, 07:56

Right, I've reset the float hight using the the method described in that link (thanks mike) and just to double check the mk2's float hight is 16mm right? The old man is gunna run the bike up and see how it is tonight hopefully as i'm back away at work until friday so will update when i can,
Thanks for all your help chaps really appreciated:)

User avatar
njhardy
Forum Regular
Forum Regular
Reactions:
Posts: 204
Joined: 07 Sep 2011, 10:27
Bike Owned: CRM250 Mk3
Location: Vietnam
Re: MK2 wont tick over

Post by njhardy » 19 Mar 2012, 08:08

Tang height is 16mm from top of float to carb body- just when it touches the valve pin to stop the petrol flow. Check the tickover needle for cronk blocking it and open the air/mixture screw 1 1/4 turns from fully closed. Make sure petrol is flowing into the float chamber when reconnected by opening the float drain screw.

User avatar
Cadiddy
New kid on the block
New kid on the block
Reactions:
Posts: 47
Joined: 24 Jun 2010, 17:45
Re: MK2 wont tick over

Post by Cadiddy » 20 Mar 2012, 13:44

Right so Dad ran it again last night after i reset the float hight and was no different in fact petrol was pissing out the over flow, and it would stop when he hit the kill switch or the ignition all of a sudden, any ideas what might have caused that?

fallenmikethebike
NWAA Supporter
NWAA Supporter
Reactions:
Posts: 3520
Joined: 02 Dec 2007, 16:02
Bike Owned: MK3
Location: Mid Surrey
Re: MK2 wont tick over

Post by fallenmikethebike » 25 Mar 2012, 17:39

Cadiddy wrote:Right so Dad ran it again last night after i reset the float hight and was no different in fact petrol was pissing out the over flow, and it would stop when he hit the kill switch or the ignition all of a sudden, any ideas what might have caused that?
Pure coincidence I would say, the floats are either duff, i.e. not floating, or the inlet valve is still sticking open.
There seems to be more than one problem going on here.
Try and get a reliable petrol supply before moving on to other area's.
Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!

User avatar
Cadiddy
New kid on the block
New kid on the block
Reactions:
Posts: 47
Joined: 24 Jun 2010, 17:45
Re: MK2 wont tick over

Post by Cadiddy » 27 Mar 2012, 16:48

Well guys i finally found out what it was.... Was the slide not seating proper so she's all back in as should be and running like a dream:) feel a bit stupid now i know what the problem was,
Thanks guys for all your help really appreciated
Cheers n gone
Cadan

john7780
Site Supporter
Site Supporter
Reactions:
Posts: 617
Joined: 26 Sep 2010, 20:53
Bike Owned: crm 250 mk2
Location: manchester
Re: MK2 wont tick over

Post by john7780 » 27 Mar 2012, 17:31

told you to check the slide, always start with the easiest option
front brakes only slow you down anyway!!!!

back off road
Super Moderator
Super Moderator
Reactions:
Posts: 1027
Joined: 12 Sep 2010, 10:48
Bike Owned: KTM 200 exc
Location: Derbyshire/Notts border
Re: MK2 wont tick over

Post by back off road » 27 Mar 2012, 17:59

:geek: well done john go to the top of the class and give the pencils out :lol:
Im thinking about a bike with more valves than a powervalve

john7780
Site Supporter
Site Supporter
Reactions:
Posts: 617
Joined: 26 Sep 2010, 20:53
Bike Owned: crm 250 mk2
Location: manchester
Re: MK2 wont tick over

Post by john7780 » 27 Mar 2012, 18:29

hell yeah i just love it when im right, in ya face knackered ;)
oi trevor you coming fat cats this saturday?
front brakes only slow you down anyway!!!!

back off road
Super Moderator
Super Moderator
Reactions:
Posts: 1027
Joined: 12 Sep 2010, 10:48
Bike Owned: KTM 200 exc
Location: Derbyshire/Notts border
Re: MK2 wont tick over

Post by back off road » 27 Mar 2012, 21:21

:( working mate
Im thinking about a bike with more valves than a powervalve

john7780
Site Supporter
Site Supporter
Reactions:
Posts: 617
Joined: 26 Sep 2010, 20:53
Bike Owned: crm 250 mk2
Location: manchester
Re: MK2 wont tick over

Post by john7780 » 27 Mar 2012, 21:43

back off road wrote::( working mate
you and me are gonna fall out ;)
front brakes only slow you down anyway!!!!


Post Reply