NEK5
3/4 ton status
make sure that all my motor needs is valve seals??? i know she`s burning oil.......just want to be self assured thats my only problem
chvymudin3388 said:u need a rebuild dont feel bad im in te same boat fixing to yank her out, my number seven shoots oil out the cylinder

i dont know how its done, and if i`ll even be able to do itWhy don't you do a leakdown before you settle on a rebuild?
hawkeye649 said:Or the 350 I have that he never got back to me about.![]()
readymix said:Why don't you do a leakdown before you settle on a rebuild?
original balzer said:i dont want to sound negitive but IMO fixin something like valve seals to fix the smokeing issue is kinda like puttin a bandaid on a severed arm.
BIGBLAZE433 said:will one of those tests tell me if its either the pistons/rings, or the heads?
could the seals be so bad that its constantly letting oil blow by?MarcS said:Not really. Just verifys if the combustion chamber is leaking or not.
What 79k20350 said-If it smokes on start up, then clears up, it's probally just the valve seals. It will cause oil loss over time.
If it's smoking all the time, and the oil levels going down alot, then it's probally the rings.
Valves themselves not seating properly in the head will cause a leak, but shouldn't burn oil.
Comparing the pressure cylinder to cylinder during a compression check will detect bad head gaskets.
BIGBLAZE433 said:could the seals be so bad that its constantly letting oil blow by?
---Time to rebuild/replace engine.TDAWG1 said:My 350 as well is in need of some repair before it gets worse. I have a good power loss and some smoke So as soon as money allows Heads off and down to the Machine shop. Is it a good Idea to find some heads in a Junk yard and just go have tem work over then swap mine and do them when I have time and money? Then hold the extra set.