I'm somewhat puzzled. My 75' injected 1.8 always seemed to be a little cold blooded. It needed a good three to four minute warm up, every morning, to prevent stalls, even in warm weather. On a cold morning last week it started right up, and I was able to immediately start driving down the road. I may be my imagination, but I think the engine is also running better too. I thought this first easy start & run was a fluke, but this has been the improved case for a week straight, in both warm and cold weather. Hey, I'm not complaining, but would sure like to know what the heck happened. I replaced the vacuum hoses about five months ago, but would have expected a vacuum line improvement to have happened then. Any ideas on what could have made this sudden improvement?