What Does the Timing Belt or Timing Chain Do? On a conventional piston engine — which is found in virtually all modern passenger cars — the up-and-down motion of the pistons turn the crankshaft, and ...

You just put your new crate engine together and your adrenaline is pumping. Pump the throttle, turn the key, and… the thing runs like a total dog. It idles fine, but as soon as you step on the ...