I'm working on an 86 deville and am replacing the camshaft and lifters. I was wondering if anyone could answer some questions;
1) What is the best way to "prime" the lifters? Chilton says one thing, some other sites say other ways. What do you guys think/do?
2) I have the complete engine gasket set, but I don't really want to mess with the valve springs/stems if it's not needed. They are a bit carboned, but don't look too bad. Can I get away with not changing the seals and leaving the heads assembled as they are, without having near future problems? From what Chilton says, I have to perform a bunch of part testing, take springs, valve seat concentricity etc. to be checked professionally. Chances are, not gonna happen.:cookoo:
3) I also wonder if I can get by without changing the pushrods, though common sense is telling me otherwise. The problem was that I found 2 of the lifters minus the lock rings, and everything above the plunger was floating around. (I did locate all the loose parts) Both of the rods to those lifters were scored just above the ball end on the lifter side. See pic.
http://img.villagephotos.com/p/2005-10/1089030/pushrod.JPG
Other than those marks, all the others appear straight and in good shape. I think there is no way those 2 could have been seated at all, but I couldn't tell because I removed the rods before I took off the intake manifold. Anyone ever seen that happen before or have a theory as to how that happened?
I guess also I'm just looking for any other quick tips to keep in mind when I reassemble this fine piece of machinery. I have searched the forums for months now and hate to ask questions if I can figure it out, but I haven't found much of what i'm looking for except the diagnosis posts. (Just like I hate to ask for directions)
This is the first time I've done this, so I guess I'll take all the advice I can get on this one.
Thanks in advance for any answers/thoughts.
Milk
p.s. Where is the outside temp sensor located? I am getting that error code, and figure it needs changing. Might as well do it now if it needs it.
1) What is the best way to "prime" the lifters? Chilton says one thing, some other sites say other ways. What do you guys think/do?
2) I have the complete engine gasket set, but I don't really want to mess with the valve springs/stems if it's not needed. They are a bit carboned, but don't look too bad. Can I get away with not changing the seals and leaving the heads assembled as they are, without having near future problems? From what Chilton says, I have to perform a bunch of part testing, take springs, valve seat concentricity etc. to be checked professionally. Chances are, not gonna happen.:cookoo:
3) I also wonder if I can get by without changing the pushrods, though common sense is telling me otherwise. The problem was that I found 2 of the lifters minus the lock rings, and everything above the plunger was floating around. (I did locate all the loose parts) Both of the rods to those lifters were scored just above the ball end on the lifter side. See pic.
http://img.villagephotos.com/p/2005-10/1089030/pushrod.JPG
Other than those marks, all the others appear straight and in good shape. I think there is no way those 2 could have been seated at all, but I couldn't tell because I removed the rods before I took off the intake manifold. Anyone ever seen that happen before or have a theory as to how that happened?
I guess also I'm just looking for any other quick tips to keep in mind when I reassemble this fine piece of machinery. I have searched the forums for months now and hate to ask questions if I can figure it out, but I haven't found much of what i'm looking for except the diagnosis posts. (Just like I hate to ask for directions)
Thanks in advance for any answers/thoughts.
Milk
p.s. Where is the outside temp sensor located? I am getting that error code, and figure it needs changing. Might as well do it now if it needs it.