vacumme advance ported to carb but tees off to the EVAP can???

[cheyennesuper]

The hose from my vaccume advance to the carb is split off to the EVAP canister too.Is this right?

 

[pauly383]

Does your state really look close for emissions ? In my state I redid my hose routing and took off the ported switches and still pass visual .

What I did is run PCV , EGR , pump diverter valve , and spark straight off the carb . Then I made the 1978 Evap can I got from a yard tie into the PCV valve at the cover ( 2 port PCV valve ) . And power brakes off rear of carb . Works simpler and I passed in AZ /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif

 

[cheyennesuper]

I'm not worried about emmisions...my vaccume advance is not working properly...i think /forums/images/graemlins/confused.gif

 

[pauly383]

What carb ? If its a Q-jet , run it direct to ported on the carb . The smog era carbed engines need vacuum advance under light loads and cruise for economy /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif

 

[cheyennesuper]

I have a holley 4-barrel but i'm not sure exactly which holley

 

[pauly383]

Its been a long time since I worked on a Holley of my own . I don't remember which port is ported , try running engine and find a port that has no vacuum at idle , and run the advance straight to that . I do use a timing light right before emissions , but all other times I time it by ear until I can drive all the time without pinging /forums/images/graemlins/k5.gif /forums/images/graemlins/k5.gif