I have a '93 850 GLT w/ 200k miles that was running great. Now it will turn over but won't start. I replaced the spark plugs before this all happened and started up for a minute- it ran fine. 2 days later I went to start and it doesn't fire up. I pulled 2 plugs to see a healthy spark in each and put a little gas in each cylinder but still it won't fire. Have had a service light on for a couple of weeks but thought that was just a maintenance warning. Is there some electronic gotcha that's preventing the engine from running and am I at the mercy of towing it to a dealer? How do I clear service light? Stevo