Quote:
Originally Posted by Stubby79
If it hasn't been pointed out...if you prevent the gas pedal going down all the way, I doubt your engine will ever be able to hit peak efficiency. In theory, you want to floor it (at least up until just before fuel enrichment kicks in) to get up to speed most efficiently.
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Yes! this is a very important point. It would be best to not have a throttle, cut fuel when up to speed, if it was practical. The throttle is the enemy of good fuel consumption as it forces the engine to do work drawing air past the restrictive throttle, I noticed this when I ran out of fuel. With the engine turning but not firing, opening the trottle results in less engine braking, felt by deceleration. This is one of the reasons diesels get better consumption.