1500 gx doesnt like early mornings

My 83 1500 gx is giving me problems its had a new webber carb on but wont run early in the morning it starts first time and will reverse off the drive but 100 yards up the road wont pull the engine wont rev and stalls take a while to restart and will rev like mad after restarting.After about 10 in the morning its great runs around no problem at all did about 100 trouble free miles over the weekend but first thing monday its as much use as a bull with tits.I think its iceing up but carnt think how to get around this or is it a thing that happens with webber carb conversions
Cheers chris

Hi,

it's not going to be iceing up unless you've been running for a while - the ice is formed as the air being sucked in freezes the petrol, generally when the engine has been running for a while and the vehicle is moving at speed. This used to happen at motorway speedonmy old Spitfire…
Are you giving it time to warm up and then closing the choke, or is it cutting out with the choke still on and the engine cold?
Either way, I would guess it's dirt in the jets or the mixture needing to be set up.

Robin

Cheers for the reply im not sure if its dirt in the jets as the carb is new 100 miles maxand the inline filter is clean the only other thing is i dont think its running a thermostate will this be a problem will fit one when i do the water pump and cam belt.

Just been out in the silver beast (9.30 at night) and it drove great didnt wait for it to heat up just drove it .All i did today was jammed the flap open in the end of the air cleaner so it is getting its air from the manifold ducting .Will have to see what happens

does the choke go from fully open to fully closed when you pull the cable?   check the 'hedgehog' heater in the manifold is working, leaving the ignition on for a minute before you start it helps because it gives the mani a chance to warm up..  check the vacuum lines that open/close the flap in the end of the airbox and check the flap is working.
 i have the same engine/carb as you and i had a problem with icing so i used the coolant hoses that went to the waterchoke on the old carb and connected them to the base of the weber - this keeps the carb warm and stops it from icing.
its unlikely the carb is dirty or blocked after 100 miles, especially if the filter is clean, but it might be worth chaging the filter anyway, maybe even using two filters instead of one (i do this to help keep my carb clean so i dont have to strip it down so often! lol!)
when all thats done you should be good to go but its worth dhecking your timing and CO and you'll have a car that runs like a dream!