assuming you did not use the arrows, not the arrows, never the arrows, you could be a tooth off on one of the cams. it is not unusual for them to be off on the first try.
recheck all the vac lines and hoses in and around the intake. especially the large on the under side of the black plastic between the air filter box and the throttle body.
check the timing.
Last edited by johnegg; 01-03-2013 at 09:13 AM..