after driving my 94 z28 m6 lt1 for about 30-40 min it starts missing sputtering, backfireing then it dies,(it comes on gradually) and wont start back up for about 5-10 mins,but then when it does start up it can only go for about 5-10 mins unless i let it set for a coulpe of hours, then it will go for about another 30 mins!!! what is wrong with my car??? i put mew o2's and a new filter on and it still does the same thing!!!!!!!!!! what fuel presure should my car idel at and drive at, im checking that 2-day?????????

 

fuel pressure 43.5

 

That's EXACTLY what mine did when it WAS the opti.

 

man dont tell me that, are you sure its exactly what yours did....

 

I'm sure......sorry, it sucks!

 

well i put a new coil on and drove it for about 20-25 mins and had no probs. i am going to drive it some more 2-morrow. the fp was around 40 and jumped up to 45 at wot, so my fuel system is ok!!!! we will see...