I have a 78 280... I have one valve that really ticks loud..i have located the tick from #1 cyl exhaust...i have adjusted valve twice.. Once hot and once cold..still ticks..how do i check to see if enough oil is getting to this rocker? And does the oil lube through the cam? Thanks for any help..

280Zs have an internally oiled cam system. There is a hole on the base circle of each cam lobe where the oil comes out. Maybe you have a sticky valve guide.

thanks curtis... is there a way to check to see if this is a valve sticking? is there any way to repair other than removing the head? thanks

A valve train with accumulated varnish can have sticking problems. Try running a high detergent motor oil -- or possibly adding a quart of Rislone.

I've also flushed engines with Gunk with great success (including on a previously owned '75 280Z and a 2001 Z3), but I was strongly cautioned against that practice by others on this list. It seems that if you flush an absolutely filthy engine (like my '78), your engine can suffer a loose-sludge attack. (I'm doing fine so far, but I'll be changing my filter at 500mi.)

Anyway, that's the solution for sticking valves -- getting them clean.