valve cover gaskets

[Yetti]

you do not have to use a tubing bender. you are not reshaping the lines, just moving them up out of the way. I suggest you take the line clamps off on the intake side so they lift a little easier. secondly the reason your gaskets are leaking is because you are not pulling a crankcase vacuum. most like the resperator is not working. either its plugged with sludge or the hoses & seals are cracked and leaking. check where the hose attachs on the sides of the intake and make sure its all there & working.

when you remove the lines from the injectors make sure you gaurd againest dirt getting into the injector opening. use plastic caps or something to keep the dirt out.

[leenigen]

By resperator do you mean the CDR valve? I checked the vacuum a few months ago using a gauge connected to the dipstick tube...0 at idle 3-5 at ~50mph depending on rpm . I thought that might be a little low but i think it's about what I read it should be.

[phazer42]

yes, he means the CDR valve.... however if the truck is older, it can dry rot the gaskets, especially if the truck sat for a good length of time. I don't recall what the numbers are for the venting, but a new CDR doesn't run that much...

if ya need help one weekend let me know I am not toooo far from ya, Iam in Waterford in the middle of Oakland County.....

[pdsq99f4]

Whatever you do, don't use cork gaskets that you get from the parts stores. I use silicone rtv.

[ssgharkness020147]

Originally Posted by pdsq99f4

Whatever you do, don't use cork gaskets that you get from the parts stores. I use silicone rtv.

RTV failed on my truck once. Hopefully this time its better.

[Yetti]

as for Gaskets. The GM Black RTV was the best at holding. you have to scrub down the rails and get every bit of old gasket off with a wire brush and carb/brake cleaner. I used to take a drill bit and clean out the bolt holes so as to not crack the head when putting the new gaskets on.

CDR...yea thats it, I couldn't think of the name. I once had a 5.7 diesel that was leaking 6-7 quarts a day in a Caprice. me and my buddy did some figureing and created a SUPER CDR. we used a length of vacuum hose on the intake snorkle to find the peak vacuum at crusing speed. we then welded a peice of tube into the snorkle and on in the oil filler neck. we dropped oil cunsumption down to 1 quart a day by tuning it in.

if I remember right the GM RTV comes in a caulk gun tube for around $40. you might find it cheaper at the parts store.

[leenigen]

Phazer42, I'm taking next week off and plan on working on the truck most of that time. I can take care of the repairs myself but if you want to come down and play on a weekday send me an email at LEenigenburg@Arcadis-us.com.