[DeTomaso] Oil Smoke From Breathers

[JDeRyke at aol.com]

In a message dated 4/23/11 9:22:36 PM, dfcex at pacbell.net writes:

> Anybody have a guess as to highly visible oil smoke coming from the 
> breathers, mainly between 3,000 & 4,000 rpms?
> 
1- worn valve guides and/or missing guide seals (NOT the stock umbrella 
seals that don't work)
2- broken or frozen ring(s)
3- plugged oil return in one head. The return ports are small and the 
dog-leg passage in each head is easily plugged; then the rockers fill up and 
flood the guides and PCV
4- vacuum leak between intake & head sucking oil from the lifter galley.   
5- a PCV installed upside-down.
All have happened to 351-Cs. Good luck- J Deryke