Ever since I bought this Z06 corvette 7.0 L new I have had a problem with the spark plugs. The engine keeps burning the resistors in the spark plugs (not the same cylinder every time). The plug is not fouled but the resistor value is lower that 5K. Thus causing a serve miss fire.
I have changed the plugs from AC 41-104 to Denso 5326 the Denso plugs last a little bit longer but still develop the same problem over time. Any ideas?

Is it completely stock?

If not then what'* been modified?

It'* running lean.

My Z06 Is it completely stock? 25K miles on the odometer.

If not then what'* been modified?[/QUOTE]

Did you put a scan tool on it?

What carfixer007 said ^^^^^^^

. . . and what is the fuel pressure?

The corvette is completely stock it has 25 k original miles on it . Never been raced. I scanned the engine with a Actron CP9695 scanner showing a miss fire on number 7 cylinder. I replaced #7 spark plug. The ohm reading on the spark plug remove was 4K and the reading on the new plug was 5k. Restarted the engine. The engine ran fine. No problems show on the scanner. I will have to check the fuel pressure and get back to you.