Jeepjeepster wrote:
tommudd wrote:
they have been putting the "washers" on for years and years now. I have taken them out before with them installed both ways and the vehicles ran fine but I always put flat side to the plug. They are like a little crush sleeve in a way
ohh no! I always put the round side towards the plug!
Going to switch them right now...

Ok Blake, I know you are just kidding. No need to resurrect your flashlight.
Some plug brands come with them already on (NGK's I bought recently) and some like the Autolites have them loose in the box. I have bought them both ways. I usually put the flat side of the washer toward the flat base of the plug. But to tell you the truth I have done it both ways on different vehicles with no problems.. It is not critical and your motor will not implode or anything. But flat side of the washer to flat side of the plug is probably more correct. Snug up the plug + 1/4 turn and they will seal anyway.
Just my 3 cents worth.........now I am broke.