Hello together, have a longer problem with my Omega B Z22XE year 2002. For a long time it stutters if I want to start it in cold condition or after a longer standing (1-2 hours). Then it tuckers like a tracktor for about 10 sec. with short and repeated gas giving it comes out of the exhaust with a bit of blue smoke and then runs as if it had been nothing. I changed spark plugs for safety (original GM). For 1 1/2 days it went then, nevertheless came again. The DIS module is also only 1 year old. I exclude this as an error. I also switched out and the following combination came out: 10-3-10-4 does someone have advice for me? LG