vt spitting out need some help

[eko]

hi guys i serviced the vt commodore put new brakes on oil oil filter coolan air filter and new spark plugs...started the car it was like kind of not firign that good took for a test run it was spitting out bad, the tensioner had alot of movement soo i thought that might have been the problem, i put the old psrak plugs bak on it was better worked much better, toook for another test run it was spitting out a little bit what may be the problem

[accentstencil]

My guess is one or more of your spark plug leads is no good.