Hi there I have rebuilt the carb etc cleaned out gum but the bike won’t cold start.if you give it some help with easy start she does straight away .As soon as warm no problems any ideas out there please .Thanks John new to your site .

Ok thanks have a look and see

As said sounds like the Choke circuit is blocked.

what did you use to clean it?

I use a sonic cleaner to make sure it's totally clean.

I picked this up off eBay, The 3.2 Ltr is big enough for a single carb to be fully submerged. 

 

egr valve cleaner super strong stuff thanks anyway for your help 

7 hours ago, John Seymour said:

egr valve cleaner super strong stuff thanks anyway for your help 

Yeah but didn't seem to work or you wouldn't still be having starting problems. 

Edited March 7, 20188 yr by shakennstirred

yep used cleaner when stripped down and used a repair kit but still don’t to start when cold got spark ok and fuel going to cab.if squit easy start fires up ok 

Float level ?

Try to use a hotter plug, they work better with a beit hotter plugs in general, how is the color of the plug:
- black,
- dark brown,
- light brown in the middel and dark Brown around,
- whitish to light Brown,
I'am now using for all old bikes slightly hotter plugs with very good effect deoending starting running and durability of the plugs in general.

Are the reeds still straight and do they close well, is the reed cage well sealed too?

Edited March 7, 20188 yr by pschrauber

Ok there’s something’s for me to check at weekend .so will keep you posted thanks for the help

Ok thanks I will take carb off at weekend and have another look.cheers 

Ok thanks everyone ,cleaned carb again took all to bits gave a good blow out and she started on 3rd kick with ckoke on.Thanks again for your help.I think shes running a bit hot as burning leg on exhaust will have to adjust mixture and rebuild the seat as not much foam in it so no support.

Timing to far advanced will make it run hot, as will running weak.

ok cheers something else for me to play with thanks

Old gas?  Do not use gas with Ethanol in it Premium non-ethanol gas only.

 

Do not open the throttle at all when cold starting the bike (owner's manual)

Spark must be blue-white and strong. Check compression as well. Timing - points open 21mm BTDC. on the flywheel circumference. Works for me.(suggestions from Feetupfun)