check valves

[QUIP'6']

just found my two checkvalves were blown out. one on the fuel canister and the other in front of the egr valve what would this do to my idle and performance?also my blms are 113 at idle.

 

[MistaScott]

The valves protect the solenoids from boost pressure, so it could potentially blow them out in which case the canister solenoid and EGR solenoid would no longer work properly. If the EGR solenoid blew, you'd likely get a code and a rough idle. The canister won't throw a code but could mess with the BLM a bit.

 

[QUIP'6']

thanks how do i test the egr selonoid and thecanister? my egr wont hold vaccum