Hi, Believe it or not a friend who helps with the racing team brought in a 95 F355. Its misfiring on the left bank (5,6,7,8), but the slowdown 1-4 light is coming on on the dash. We pulled the plugs and tbh only 3 of them are good. The other 5 are missing cores. Also the 3rd plug on each bank (from rear to front) is wet... if it was a cat problem surely I wouldnt be getting a wet plug on each side would I? Any ideas, cheers.
Take a look at the ignition sensor connectors. One of them were completely wasted on my 348. On the 348 engine they are located in the front of the engine in the middle. You can easily get to them from underneath. Disconnect the metal piece that holds the connectors in place and inspect the "plastic housing" of the connectors. I repaired mine with PVC glue. Just to be sure the insulation between the pins were ok. There are three pins in each connector. Some water added with oil and dirt can cause all sorts of problems. Good luck! B
