spark plug seal tubes

[loquito]

What are they, where are they, And do they get changed when I adjust the valves.
Steven

 

[landtoy80]

They are under the valve cover. You replace them when you pull the cover.
The PCV gromet, valve cover seal and maybe some other seals (look in the FSM) should be replaced.
You may want to clean the intake chamber at that time too.

 

[robbie]

If you have a 91 truck you have not spark plug tube seals, if your truck is a 93-97 you will have these items. Need to know what year truck you have. later robbie