95skinny240sx

So guys i have had a few issues with my 95 240SX KA. recently a hose busted underneath the manifold, changed that and car wouldnt idle right so we removed the egr still had the same problem. found 2 hoses that run up to the manifold for the pcv busted. Since we had it all back together already, i tape them up and car ran fine. then i got home and saw a little bit of steam and figured it was from the coolant that came out while removing the manifold. nope was another hose that connects to the heater hose busted. replaced that and then the car wouldnt start, it started acting like it was starting to go dead and didnt have enough juice to turn over, i have recently changed the battery and the starter and had both tested and checked out fine. starting to beleive that its the motor but any ideas.