Low compression question 240z

I have a 73 240z. The car has a L28 with the 240 head. I'm not very familiar with these motors quite yet so looking for some advice. I recently did a compression test and only my number 2 cylinder is low the rest are 150 and above.

The car has dellorto triple side drafts as well. One major symptom is the car isn't sucking fuel (more less spitting it from) into the cylinder at all and also it's making slight valve ticking noise. In addition the car misfires in the low rpms. Just curious at to what you guys think the problem may be? I'm thinking it's a valve problem not a piston ring issue. Anyone have a similar experience and can lend some insight?

Any advice would be very much appreciated.

Thanks.

Edited April 3, 201411 yr by spoolin4life