OK, This is more as an info. thread than a question, just to help anyone else who may have had the same issues. My trusty 1993 200 always started, until a month back. One cold morning I twisted the key, touched the pedal, and all I got was the starter motor turning, no ignition. Right, so went and bought plugs ( NGK BCP6ES ), fiddled with vacuum hoses, checked fuel flow, etc. After changing plugs, it started perfectly. Next day, go and drop wife at the airport, turned off car, helped get her bags out, kissed goodbye, and the car won't start ( warm now ). The guards got suspicious of me not being able to start in a stop 'n go, but after an hour it just started firing and I was able to go. Since then, I have been looking at everything, and checking everything I could think of ( reading plenty on these forums ), and trying everything out. My lifestyle and planning had to change dramatically, given that I couldn't go anywhere else within an hour after arriving somewhere. My main fear was stalling in traffic. ( ) I didn't take it to anyone, because I have an unlicensed 230E that I can just risk driving ( would rather not ), and I have just been laid off, and have not secured another job, so every cent counts. Anyway, today I climbed in and thought to take a look at the plugs I changed at the start of this hassle. I checked plug gaps on the internet (.8 mm ). They were correct. I looked at the old plugs I had removed. ( Champion S9YC ) and saw that the gaps were way different ;- 1.1 mm. Now, I don't gap new plugs, because I thought that was the manufacturer's job. I installed the old plugs, and now my problem appears to be over. Last thing I would have thought. I hope this post may help someone in the same bucket one day. Any ideas on this strange phenomenon ?