: Solenoid EGR

12-17-06, 03:04 PM
Hello, As I was adjusting the timing on my 93 Fleetwood this afternoon, I took a look at the EGR solenoid. There is one vacuum line coming in the from the vacuum source (base of the TBI unit) and one vacuum line going out from the solenoid to the EGR. OK, that makes sense. . . but there is another orfice on the side of the solenoid that has no vacuum line attached to it. Why is that there and what is it for? At first I thought a vacuum hose had fallen off, but I couldn't see anything. Any thoughts, gentlemen?