Does anybody know where to find both primary and secondary jets for an Aisan carb on my 1977 w/20R truck?

I've been trying to get this truck to pass the CA smog test. I actually had it idling quite nicely but it still fails the CO test so I still need to lean it out. I've gone through everything - float level is fine, traced down vacuum leaks and verified vacuum connections.

Looking through the access ports for the jets I see that they are pretty chewed up which leads me to believe that someone at some time attempted a re-jet. This also explains why I get such crappy mileage.

I have heard that Weber jets fit but I am not sure what size to ask for.

 

usually anything over 25 or 30 years old meets smog exemption.....

 

Not in Cali. Anything 76-up has to pass emissions still. With factory parts or CARB approved parts

As for the jets id say find somebody here who still has their stock carb from a weber swap and get small parts from them. I may still have a stock carb but I think they're all gone. Ill look around this weekend. Pm me a reminder if nobody else pops up.

 

Thanks! Will do - I really appreciate it! Truck's been in the garage too long.

 

Are you sure it's not your catalytic converter that is bad?

 

It's pretty new. I have probably less than 1K miles on it.