New TV Ram 1500

Doesn't matter what you drive or fly, I think that is a common problem.

Most replies are correct, its for lower emissions, with CAFE (corp average fuel econ) manufactors clamor to lower emissions as cheaply as possible, aircraft have 2 complete seperate but similar ignition systems for safety, one fails the other still works, on aircraft one magneto is an impulse, it has a spring loaded device that snaps the mag over quickly for a hot spark at low cranking rpm, that is why you never move a prop unles you know what you are doing, with the mag switch off, if there is a broken p lead wire to the mag, with the ignition off that mag will produce spark and cut off your (what ever is in the way) I am glad R-Pods are safe and foregiving. But Donna is gonna kill me if I don't quit forgetting to take out the smoke alarm battery when making toast

I once had a Honda Motorcycle  in the early 80's that had two cylinders  and 4 spark plugs. It had very large cylinders so two spark plugs per cylinder gave it a more complete burn. 

Originally posted by David and Danette  Thank-you for the answer, I guess it is for a more efficient use of burning all the fuel. And that is one thing it has no problem of burning fuel  the MPG is not very great.

Originally posted by David and Danette    The Ram 1500 4.7 V8 engine has 2 sparkplugs per cylinder. Does anyone Know the reason for that ? I think I have heard of airplane engines having two plugs for safety but  I wonder the reason for this engine and  the 5.7 Hemi too has the two plugs per cylinder. Just curious.  David

It is called a waste spark system where each cylinder has a primary spark and a wasted spark for the exhaust stroke.