Hard Start

Ever since I started mucking around with my exhaust manifold, an odd starting issue has popped up.

Once in a while I will get a hard start, itll whirl n whirl n whirl, let off, try again, itll kick and start, try and idle at around 400 rpm. Give it a little gas and itll start spitting and sputtering at 1200rpm and doesnt come out of it, but if I shut it off and restart, the problem is solved. Recent tune up, fuel filter and such.

Any suggestions?

Your average high mileage '95 Kee, 4.0L AW4.

Getting any air in the exhaust pipe?

I am sure there is, the manifold still leaks a bit, much less than before the hard starts came along. Exhaust was %93 of the way to open manifold.