no
Intake valves are larger than exhaust valves, and are aligned with the intake runners on the intake manifold.
Yes the intake and exhaust valves have to be close.
Trace the runners. You can see the exhaust runners leading to the exhaust valves, and the intake runners leading to the intake valves.
The intake valves are bigger, and lead to the carburetor. the exhaust valves are smaller and lead to the manifolds or headers.
Most likely that a valve is installed backwards, or two (or all three) valves are in the wrong position or you are not vibrating your lips in the correct manner
Intake valves are cooled by the gasses passing through them, exhaust valves are heated by the gasses passing through them and can be burned by overheating.
The intake valves line up with the intake runners on the intake manifold. The exhaust valves line up with the exhaust runners on the exhaust manifold or headers. With #1 at tdc you can set 1,2,5,7 intake and 1,3,4,8 exhaust valves. Rotate the engine one revolution to #6 tdc and set the remaining valves.
Exhaust valves are always smaller.
There is NO Timing belt...- has one primary and two secondary chains. If chain broke possible to bent one or more intake valves, if slips- all intake valves need to be replaced... Good luck. G.
Intake valves are in the cylinder heads.
A d16z6 has 16 valves 8 intake and 8 exhaust valves.
The intake valves are in the intake ports, the exhaust valves are in the exhaust ports.