The mornings in Perth have been a bit chilly lately, maybe around 10C.

When I start up the 4k in the morning, the choke has no effect until the cars warmed up a bit and then it works as expected.

I have to keep my foot on the pedal for a minute or two to stop it stalling.

The vacuum hoses are connected to the choke. (aisan carb) The original air cleaner has been replaced with an open filter style.

Is this normal or is my choke stuffed?

thanks

I found the problem, so its running sweet again.

The clamp holding the choke cable near the carby was loose, so the choke wasn't opening/closing fully.

Take a look- whip the air cleaner off and watch as someone slowly pulls the choke out.

 

It should close the flap over half the carb & lift the accelerator off the idle stop at the same time.

 

You can adjust those I think (its been a while) so you can have the idle speed increasing before the flap closes over. That way you can keep a slightly higher idle without making it richer.