carb secondary now works!

[Brownd3max]

My '77 40's stock aisen carb secondary wasn't working since acquiring the 40. After reading all the good info here, I did the paper clip test which verified that. So after pulling the secondary diaphragm assembly off the carb, and verifying a good diaphragm, I saw what appeared to be a small flat rubber gasket around the little vacuum hole. I replaced it with a small thin O-ring, and voila! It now pulls that clip down almost 1/2" FWIW

 

[tls3601]

I am curious what the paper clip test is??

 

[Brownd3max]

The paper clip "test" has been suggested by many carb experts on this forum, that's how I (a noobee) just found out. slide a smallish clip over the secondary diaphragm linkage pull "stem". put it right next to/under the diaphragm housing. Then go for a ride, WOT, up a hill in high gear preferably, then look to see if the clip moved (slid) down the shaft any. If not, it ain't working(opening the sec. butterflies).

 

[tls3601]

Cool, going to check that out-probably working just fine but my 33's making it feel sluggish-ha ha