Tim_WS6

iTrader: (16)

For the last few weeks i could tell my valveseals were going out. It would smoke alot on startup and when i got on the gas. Then the last time i drove it a couple weeks ago something went different, i could tell i lost alot of power and it even sounded weaker. And a couple days ago i noticed oil on top of my passenger side header flange. So last night i got my valveseals replaced, it still drives the same like i lost alot of power and it still smokes, but now even while at idle and while driving. I have no idea what to do next.
heres a pic of the oil on top of my header. where could this come from and why?

Old Geezer

iTrader: (3)

Oil smoke from broken ring[s], cracked piston lands.
The oil on the header is likely from blowby forcing oil past the rocker cover gasket.
Low on power could be the result of the condition of the ring seal.

Tim_WS6

iTrader: (16)

now i'm kinda thinking the valveseals were'nt the problem. would a leak down test find whats wrong in my case?

Old Geezer

iTrader: (3)

A. A leakdown.
B. A compression test.
C. A good look at the plugs.

The plugs should be a somewhat accurate indicator of cyl condition.
Once the plugs are out, either the leakdown, or the comp test can be run.
I'd do the leak and comp tests while the engine is still warm.
I'd start with the cyl[s] that have plugs that are questionable.
Some help to get things done while warm is probably needed, given the "nice" plug locations...