Adjusting auto choke l series

jims · Post by **jims** » Fri Aug 09, 2013 4:11 pm

So my choke operates correctly: closed when cold and fully opens when warmed up. My problem is that on cold start up it idles the car too high, around 2500rpm.

Can I adjust the choke so that cold start idles lower?

pzs · Post by **pzs** » Sat Aug 10, 2013 2:27 pm

There should be 2 idle screws, normal idle screw, and fast idle screw,

jims · Post by **jims** » Sat Aug 10, 2013 4:04 pm

So adjust down fast idle screw you're saying?

tambox · Post by **tambox** » Sat Aug 10, 2013 6:23 pm

Yes, but check for any vac leaks first, as they will give you high rpm.
The choke has start up stages, depending upon what year it is.
There is also a choke pull off diaphragm, that opens the choke a bit as soon as you start the motor.
If everything is not set correctly, that can give you high rpm as well.

jims · Post by **jims** » Sat Aug 10, 2013 8:37 pm

Thanks Tam.

The pull of diaphram seems to engage on start up and I checked for vac leaks with some carby cleaner around the vac lines.

Will adjust down the fast idle and see how I go.