Quote:
Originally Posted by madcap
I agree, I don't flog the engine 30 seconds after startup. This is just turning onto the road and accelerating normally. There is a noticeable surge in power during light acceleration but only soon after startup. After that initial surge the engine seems to make power evenly for the remaining time the car is running. I figured this may be something with the direct port fuel injection system coming up to full operating pressure or something like that, but after the engine has been running for 30 seconds or so.
|
Do you notice this surge while maintaining consistent rpms? The engine pulls stronger higher up the revs. What your describing is how all engines work, at least to my ears.
The other thing is that engines run rich when cold, this generates excess heat to get the catalytic converters up to temperature to reduce emissions, called "light off temperature". This is similar to what was called a "choke" in the old days, after the car warms up you can dial back to the proper air-fuel ratio and it'll run better. Add in what others said bout oil circulating and this should satisfy most curiosities.
~7k miles in and my foot rest wiggles a bit too if I don't put my food directly on it. I'm not concerned.