my roommate just purchased a hardpipe kit for his 92 stealth tt. we began to install it, and got all the pipes reachable from the top. when we attempted to start te car, surprise...it wouldn't. we think and it sounds like we have eliminated any possible leaks in the new set-up. any suggestions? the car has been running a little rich for about 3 months, could his spark plugs be damaged? the starter sounds just fine, it just soesn't want to catch.