i got a 2000 ranger it keeps burning up left side rear spark plugs ive put new plugs, wires, coil but it keeps doing it now since it has gotten cold were i live it doesnt like to run in the morning when i first start it up idk what it could be or what to do

 

Could you be a little more specific by what you mean by burned up?

 

it was fowlin up the plug to were the truck wouldnt run right until i replaced the spark plug

 

Can you determine if the fouling is anti-freeze or excess fuel that could possibly be a faulty injector?