O-rings in Dorman UIM PN# 615-180 for 1997 Pontiac Bonny
I bought the Dorman PN# 615-180 Upper intake manifold. The only documentation included is about the tightening sequence and torque specs for UIM. There are 5 loose O-rings included in the package, but there is no documentation as to what they go to.
My guess is as follows:
1.) Two of the O-rings are orange in color and look like they must go to the coolant bypass elbow.... I did buy the coolant bypass elbow from the dealer.
2.) There are two small black O-rings which appear to go to the fuel injector, where one would be for the injector to fuel rail connection and the other for the fuel injector to intake manifold connection... What bothers me is why only include O-rings for just one of the six fuel injectors.
3.) The fifth and last O-ring is black in color and has an ID of about 3/4" to 7/8" in diameter and has a thickness of about 1/8". I have no idea as to what this is for.
In fact, I am not certain about ANY of these 5 loose O-rings. Does anybody know?
Did the other folks out there get what I got ? Does it sound like my box didn't come with a parts list ?
Thanks for the help,