I have an 88 Chevy C1500 with a 5.7liter v8 2wheel drive. The motor is a aftermarket GM crate motor. When I have the engine running in Idle or if I am in stopped traffic it smoke's like a freight train. I have checked the compression and all cylinder's are at about 150psi. Was wandering if my valve seal's could cause that? I also have a clatter in the top end under load and don't know if I can adjust the rocker's or if they have to be torqued down to spec.My main concern is the smoking though.

 

might be the seals, what color is the smoke?

 

The smoke is a blue color, pretty sure it's the oil. Just wasn't sure if the seal's could get that bad, trying to change them now having trouble getting the keeper's out. I have them where they get loose and spread but can't get a hold of them to pull them out.

 

angled needle nose pliers works for me (sideways bend) get the cly u r working on to tdc on the valves you are working on