I have always wondered. I have a Taco 4.0 6 cylinder and do much offroad. My question is this... when I use the engine compression stroke to decelerate going down hill (foot off gas pedal), is there gas being fed through the injectors into the cylinders?? Is fuel still being consumed in the engine? Does the computer know when compression is being used to slow the engine and shut off the gas flow?
To me, it sure makes sense that gas flow to the injectors is shut off in deceleration, but is it???
Thanks for any help.