clearances

So I just finished adjusting the valve clearances using the guide on this website was pretty straight forward, just wanted to know was I supposed to drain the oil before I opened the cover for the exhaust valve cause when I open it oil proceeded to leak everywhere. Is this normal or not? Looks...

I just put a head back on my engine after I have reseated the valves and put in new piston and rings after a quick hone of the bore. Put it all back together and I have 0 compression. There is no leaks through new head gasket and head bolts are tight. So what is it? My thoughts are on the...

What sized feeler guages do I use for intake and exhaust on the 150 lifan motor?

ok so I done my valve clearances on my atomik nitrous 150cc...now all of the sudden sicei done it i got oil leaking from the bottom tappet cover.... I haven't broken or over tighten anything,there was never oil here befor please any advice would be appreciated! is the bottom tappet mabey not...