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valve seal removal


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Hi guys, I am redoing head gaskets on my third Northstar. As long as the valve seals come with the gasket set I thought I would replace them too. The heads are off and I can get the valve springs off no problem, but how do you pull off the seals? Never Mind they are not that tight come off pretty easy with a slip joint pliers.

Edited by caddidaddy55
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Remove the valve spring retainer and valve spring.

Important

The valve stem seal should not be removed unless replacement is required.

use the J 38820 in order to grip the seal. Remove the seal by exerting a twisting, pulling motion. Discard the old valve stem seal

It is my understanding that the valve seals rarely need replacing, but maybe someone else will chime in on that

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Hi guys, I am redoing head gaskets on my third Northstar. As long as the valve seals come with the gasket set I thought I would replace them too. The heads are off and I can get the valve springs off no problem, but how do you pull off the seals?

Replace them if you are worried about them, I wouldn't worry though. They seem to keep their softness and the spring tension. The worst thing that could happen is that you get a blue smoke cloud everytime fou fire the engine up from a cold condition :P

I use a piece of thin sheet metal formed as a cone, I slide o-rings and seals over the cone in order to avoid sharp edges when replacing o-rings and seals.

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The valve stem seals are viton and rarely go bad. If the replacement seals are not viton, they could go bad in short order - leaving you with clouds of blue smoke on startup. If your car did not puff blue smoke on startup before the headgasket job, I'd just leave the existing seals alone...

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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