replacing the valve oil seals - how big of a job is this?
CK5
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replacing the valve oil seals - how big of a job is this?
- Thread starter wazzabie
- Start date
str8axle55
1/2 ton status
Kind of a project with the heads on, guessing that is what you mean. Need to pressurize the cyl with air, remove valve covers, rockers, valve springs, change seals, re-assemble. Smoking issue at start up?
Yeap it smokes at startup.. like a white smoke. The plugs are also oil fowled.
Some people also use the rope trick to keep the valves open.
Is this beyond a do it yourself home repair? I have an air compressor. What would happen if a valve fell?
79rustyk10
3/4 ton status
that would be a real bitch with the heads on. is the engine strong otherwise or is it pretty tired too?
the engine still has good compression last time I ran a compression tester. It has about 120K on it.
Maybe it might be good to remove the heads and clean/ scrape any junk from the combustion chamber.
You could probably pull the heads, replace the seals, and reinstall quicker than doing them on the motor (but you would need to buy gaskets).
I'm not sure I have the skill set for this. It would be a big learning curve.
79rustyk10
3/4 ton status
gotta start sometime, this is what I would do as well.
specs on the truck?
specs on the truck?
on the psi for the cylinders or engine? just a stock 350... would like to put headers on it some day.
AlaskanK5
1/2 ton status
I got to do this also. Having the same problem in my 1991 Fullsize Blazer (gas) 5.7 Been eating oil like crazy
Pulling the heads is WAY more work, seriously it's as easy as moving the piston in the cylinder you're working on to bottom dead center (so the piston is at the bottom of it's travel) and screwing a piece of tube into the spark plug hole with pressurized air. Then remove the rocker arm, compress the valve spring and remove the spring retainers. Then the seals just slide off, that's it.
x 2......
str8axle55
1/2 ton status
If it's blowing through lots of oil, guides might be worn to. If you're gonna pull the heads might want to send them out. I`ve done this job in the truck before, it`s not that bad. K-D I think makes a tool to push down the spring, bolts to the rocker stud, just don`t drop the valve keepers into the engine.
wasted wages
1 ton status
What he said.....block all the oil return passages you can with rags....keep a magnet handy for retrieval....
I like the rope trick better....less chance of dropping a valve into the cylinder if something goes wrong....
