Ticking noise from top part of engine

[dave]

Dave, the Air Injection Control Valve is for purging the charcoal canister. Its part of the evap. emissions system.

As far as the diagram showing 2 and saying you need 4. Look closely at the space the reeds go in. There are 2 spaces per side. So 4 number 8 and 4 number 5 are needed.

Thank you Lord Popgun. Maybe somebody else can reply concerning the O-ring.