Quote:
Originally Posted by motorhead
With older carb cars it wasn't because the motor needed oil to warm that you had to let it warm up. It was because the choke needed time to open to let the motor run smooth. I think that's the reason people think you need to let todays car warm up for several minutes which is wrong. I always wait until the rpms drop down which only takes about 15 seconds before I take off.
|
Carbureted engines use a choke to enrichen the fuel/air mixture to prevent a lean stumble/stall...exactly why you had to let an engine warm up a bit because if you start out with a (carb) engine and open the throttle plates; basic physics will tell you that air moves quicker than fuel and an immediate lean condition can easily result and the engine will suffer....new vehicles with fuel injection don't have that problem. Running an engine lean will create lots of problems (ask any drag racer). A few minutes and you're good to go; just don't get on it hard until things are up to temp.