Hello, have the following problem. After a short service life ( approx. 2 weeks ) my Corvette ( C4 ) did not want to start any more. After long orgling and the use of Startpilot the engine then started again, but did not run on all 8 pots. In the meantime I have installed 8 new spark plugs, new ignition cables and a new distribution cap. The 1st and 2nd cylinder is still missing. The respective spark plugs have a strong spark. They show however no discoloration. The other 6 have after short test runs assumed a deer brown discoloration, which of 1 and 2 are still white. Compression is fine. Stress is present at all injection nozzles. Are the injection nozzles from the 1st and 2nd cylinder defective ???