Sleepin' GT woken up to black smoke tonite !!

[jetuomi]

Hey guys, just wanted to ask if this is normal operation for a car that has been put away for the winter..

I started it up, started right away, let it warm up for 12 minutes, and then I gave it some gas, upto 2800 rpm's +, and black smoke came out of the right tail pipe (looking from the back) but not the left. This right side also has a leak in the manifold, SO, my question is, is this normal ?? The motor has never smoked any colour, and passed emissions with a perfect score 8 months ago..

Also just got the oil changed before I put it away...

Also, is it okay to let it sit for 3 more months, or should I try to start it once a month or so??

Thanks !!!