Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Are you sure you didn't cross 2 spark plug wires when you put the new ones on. 5 and 7 get crossed a lot since the sit right next to each other on the cap and are also right next to eachother on the engine, too.
Now at what point did you tell me what engine was in this before you just said it was a 6 cylinder?