SII Li150 with Casa kit won't start when warm ...

[Devo McDuff]

Howdy,

My Lammy starts okay from cold, maybe 3 or 4 kicks. But if I stop even after a short run, it won't start again until cool .... unless I find a hill or get a decent push that is.

The kit should be run in now and was going well until it died a while back. Went in the shop and had oil seal replaced, also new crank at the same time. Been like this ever since.

Any ideas chaps?

Ta,

Dan

[a.j]

Wrong grade of spark plug / wrong gap, Dirty air filter, (includes poor quality air filters that are either too small, or incorrect paper elements)
Incorrect points gap / wrong timing, Worn rings / worn piston bore, Float needle worn, Throttle slide worn, Wrong pilot jet size / blocked pilot jet.
Choke on, either worn choke or check choke cable is adjusted correctly, Air scoop blocked, or wrong size scoop / airbox for carb.
Break down of coil, Break down on pick on on electronic kit.

Take your pick out of any of these. Good luck. :bigsm:

[bizzly]

Howdy,

My Lammy starts okay from cold, maybe 3 or 4 kicks. But if I stop even after a short run, it won't start again until cool .... unless I find a hill or get a decent push that is.

The kit should be run in now and was going well until it died a while back. Went in the shop and had oil seal replaced, also new crank at the same time. Been like this ever since.

Any ideas chaps?

Ta,

Dan

I had a problem with mine...same symptoms....I changed my spark plug for a colder one and never had a problem since. I was using an 8 plug...now using a 9

[coaster]

As ststed above, there are numerous reasons for poor warm starting but a trick you can try if all else fails is to turn your petrol off maybe 50 yards or so before stopping. When re-starting leave the fuel turned off until it fires up.

[Anthonb]

Had same problem with my p200, replaced needle and seat and starts first kick....

[Devo McDuff]

Blimey, that's a lot of options

A bit more back ground … after the kit was fully run-in and going okay it just died at the lights and wouldn't kick-over at all. Can't have been a seize as it was only a short-run at low speeds around town. Since then it's been in the shop and had new seals and bearings.

Plug that was in before was a 7 and is a 7 now. Could try using an 8, think I already have one at home somewhere. It had a 12v conversion at when it was kitted so no points anymore. Choke looks okay. Will try and have a butchers at the other stuff but I think most of that was checked in the shop, it was just re-jetted last week.

Ta.

Dan

[Toddy]

If you are checking the faults listed on your own try and do them one at a time to elimanate each one, Lambrettas never easy eh

[Devo McDuff]

Will do, ta. Will also give the fuel cut-off trick a go.

[sideout]

If you're running a carb with a filter, try disconnecting the rubber elbow from the carb. If it then starts I would look at reducing your jetting a bit. [Don't be tempted to run without the filter though, or you could hole a piston.]
I've found Mugellos to be prone to this in the past.

[lockman69]

Sounds to me that your choke is stuck open (on)....