Seafoam - 2.3L Check Valve ???
Reading instructions on running Seafoam thru the engine to hopefully clear up some gunk and lifter noise.
Wondering if anyone can tell me where the "Check Valve" is located on the 2.3L ??? Instructions say to suck the Seafoam up thru the main manifold vaccum line.. no problem.. got that.. but it says to be sure to NOT run it thru the check valve.. can find any signs of a check valve.. but want to make sure im not missing something??? Is the check valve attached to the brake booster ???