Dude...
Pull off your cam gear and tell me if it looks like this...
They are interference motors.... So, yeah... At least one or two bent valves. The picture is from my d15a3, but the same pricinple should apply. Check your oil jet... Mine had a foreign object get stuck in the cam journal and freeze the camshaft, causing the end of it to sheer off... More than likely, your either just missing the key, or you need a new cam and gear... So.. Good luck, though.
__________________
"Short, sweet, and to the point"
1987 CRX Si -
Project Si 'RexSi'
1996 Ford Thunderbird 4.6L V8 - Plastic Intake Manifold, FTL.
2004 Nissan Sentra, 1.8s - The "s" stands for smooth....... ?