1996 3000 gt automatic has no spark
 

I have a 96 3000 gt automatic i bought it with a no start /no spark problem .. the previous owner put a used pcm in it still no spark i have tried a ignightor and coil packs still no spark, The crank and can sensor seem to b putting off a siginal .. does anyone know where to start this diagnosis fresh seems like something is being missed ..

Spark plugs in a Mitsubishi 3000GT need to be replaced every 30,000 to 60,000 miles for optimal performance. The spark plugs in a Mitsubishi 3000GT needs to be inspected and cleaned every 10,000 to 15,000 miles. Your previous owner may have had more miles on it. Check it with an automotive technician and replace the spark. Replacing the spark plugs extends the engine's life and enhances fuel efficiency.