sorting starting problems on peugeots and yamahas

ok a quick guide to sorting starting problems out for gurtner and dellorto carbs.
it seems a common problem "help my speedfight takes forever to start" or "my jog wont start its got fuel and spark"
as i work as a motorcycle mechanic, i see this problem a lot.
first things first, get a NEW plug
the old one has had it, they dont cost a lot and its peace of mind.
next, take your carb off.
on a speedfight, take your seat out (and viva citys too)
on a yam, take your airbox off (you dont need to take the carb off on these)
then take your float bowl off.
this is where the magic happens
there is a tube in your float bowl where the choke draws fuel to start, this is where the problem is

spray some carb cleaner down this tube, then blow through it with an airline. then spray carb clean through the choke curcuit (from the front of the carb, and up from underneath) stick your carb and stuff back on.
it should start much better now, if you still have problems change your autochoke

 

thanks Ill try this on my speedfight as it starts but its very tempermental and when the engines cold to start it I have to roll abit whilst trying to start it!

 

one more thing, there is a kind of recall on the float bowls on jogs/aerox's/neo's if yours is the kind where you push up the pipe to drain it, its the old type, they changed the part for a kind with a drain screw, as the push up ones leaked, check you dont have this float fitted before going through the above guide as that could be the whole problem

 

Brilliantly useful information,

Sean

 

Great info, this is where I'll start at weekend, thanks

 

More info.
On Peugeot speedfight the early ones had a plastic float bowl, which would crack if you over tighten the drain screw.
They sort of recalled it and swapped them out to metal ones.
(the picture is a speedfight float bowl)

 

Really good info. Mine starts better cold than hot. Wonder if this is exacerbated by the air cooled engine? It get so hot under seat I no longer stick perishables there. At least air cooled car engines have fans. Unlike naked bikes the engine isn't as exposed to the air flowing past. Still it has it's benefits, the seat gets nice and toasty on a cold winters day.

 

Probably a little too rich on the mix milo.

 

I think it is running rich as it's smoking like a beast. Also going to use fully synthetic in future. Apparently it helps to keep temperature down?