My 93 V8 is misfiring on cylinder one left bank. It is sparking OK at the plug. I am struggling to find the answer to my problem. I have recently identified the following problems and wouild be grateful for feedback on what effect they would have: The vacumn advance unit does not hold pressure...

I have recently bought a 93 3.9. I went to use it this morning and it won't start, the engine cranks, fire then immediately stalls, when I attempt to start it again the engine spins but does not fire. If left to stand it will fire and immediately stall again. I have tried everything obvious...