At idle when you connect the hoses, the timing should advance by 7-9 deg. If it doesn't then either the hoses are bad or the vacuum advance controller is bad. You can test it by removing it from the distributor and applying vacuum to either of the ports. The arm should move when you apply the vacuum. If it doesn't move or the unit won't hold the vacuum, then it's bad.

BTW, Toyota is proud of those. About $140 list. <img src="/forums/images/graemlins/frown.gif" alt="" />

Bob

Bob Garrett
83 Toy Pickup
95 FZJ80
Shawnee, KS