Vac. Secondaries Question

[76bonanza]

I have a set of springs for my holley was wondering how to change them?

[Cole's 87]

Take the cover off the vac sec diaphram by removing the four screws. Circled in yellow
then lift up on cover There you have it

[76bonanza]

My cover only has three screws and I have removed them but the cover will not budge.

[DCRANER]

Originally Posted by 76bonanza

My cover only has three screws and I have removed them but the cover will not budge.

COLE'S 87 was referring to a Holley Avenger which is a new model and gives access to 4 screws. Your Holley is most likely not an Avenger, but there is a 4 th. screw, just cannot get to it, been that way on Holleys for many years. You have to remove the 3 or 4 side mounted screws and remove the diaphram housing, be careful not to mix up the linkage, etc, then you will see the 4 th. screw.

Stock Holley spring is probably silver, very stiff so secondary most likely not working, go to the yellow spring for the quickest secondary opening response if that is what you are looking to do.