Mine doesn't do it anymore. Stopped when i filled the tank back up.

 

Using any specific brand, Kwando? Mine starts rough and even stalls sometimes in this cold. Perhaps the 91 octane from the QuickieMart isn't cutting it for me.

 

Kwando, that's about the only other thing I can think of. What brand of station do you use? I don't live in Denver or else I would try the same station you use. I consistently use Conoco, sometimes Texaco (I guess Shell now). Always 91 otctane. Rob says he uses 100+ from the race track and his still does it. But he's not worried about it. Do you park your car in a garage or outside. I don't have a garage, so maybe this is an issue as well. I don't know. I've also get friends who build engines all the time that say what I am experiencing is actually common with high compression engines. At this point, I'm just not sure what else I can do. Or if there even is anything I CAN do.

 

Another quick thought. Kwando, when's the last time you tried a fuel system cleaner? I've never used on in the 6 months I've owned her, mostly because people say you shouldn't need to since additives are built into the gas. Unless maybe this isn't the case, and Colorado gas is just plain crap. I don't know, just an idea.

 

I live in Texas, pretty damn close to sea level, and I just saw that you are in Colorado, so I'm curious if this could be an altitude thing. Is there anyone NOT experiencing this that lives at a high elevation?

 

[QUOTE]Originally posted by gernby
[B]I live in Texas, pretty damn close to sea level, and I just saw that you are in Colorado, so I'm curious if this could be an altitude thing.

 

What's the altitude in Colorado Springs, CO? Isn't it going to be much higher than 3500 feet?

 

bash and baldy74 no specific kind of gas. Mainly use 91 octane. Use mostly Conoco or Phillips 66. Car is always parked inside of a garage. This has actually happened a few times in my S2000. Every time I have driven the car until it needed a fill up, after a full tank of gas everything was fine. Never used any fuel system cleaner in the 19 months I have owned the car.

It could be the additive that they use in CO's gas...

 

The first time I had this happen, was in the beginning of Oct. when I was back in Wisconsin (~1000 ft above sea level), and it was a cold morning (30-40ish). I started the car and it stalled. I started it again and it was fine. It then happened again when I got back to Boulder (~5300 ft) on a cold morning. So I don't think its the altitude. I had never started it in the cold prior to Wisconsin. I was using 93 octane in Wisconsin, and I use 91 in Colorado.

 

I put a bottle of fuel injector cleaner in at every oil change now. I don't know if this would resolve your problem and it is certainly not needed in a car that is still relatively new (less than a year old) but even with the new fuels and all their additives, it would hurt to spend a 3-4 bucks for a bottle of FI cleaner every oil change.

The fact that I was able to "cure" the problem artificially by plugging it in "might" point toward something to do with one or more of the temp sensors in the engine. I just can't say for sure.