runs better cold

[TheFather]

One thing I've noticed with my 2 stroke...

Immediately taking it for a ride without properly warming up the motor after a cold start, it runs like a demon for the next 5 minutes or so. Loads of "pull", "crispness" of throttle, etc. Then it settles into its normal-type behavior/performance once warmed up.

What causes this? Cause I sure like the way it runs for the first couple minutes after a cold start and would love that kind of responsiveness after the engine fully warms up too.

Just as a note... I live in South Florida where average temps are obviously/normally on the warm side.

[jprestonian]

My Vino does just the opposite. Below 50F, it takes a bit to warm up, and there's hesitation when accelerating from a dead stop for the first couple of miles. Below 30F, it's REALLY balky -- nearly, but not quite dies trying to pull away from a stop.
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[90GTVert]

If it runs way better or worse while cold it could mean your tune is a little off. The auto-enrichener adds fuel when the engine is cold. If adding more fuel makes it run abnormally strong, you may wanna make sure you aren't running a little lean once warm. If it runs abnormally weak, you might wanna make sure you aren't running too rich once warm.

[TheFather]

The auto choke... Of course. Obviously it didn't accur to me that the auto choke may have something to do with a different state of air/fuel once the engine reached normal operating temp. I will experiment a bit with the mixture and see if that makes any differences. I'm sure it will.