Spark plugs Loosening up
I have NGK Tr55's, when I first tightened them I followed the instructions from the box, and I've had 3 plugs all from the driver's side head that have loosened up over these past few months. Now, I keep re tightened them but they seem loose up after a couple of weeks. any one have any input? it would be appreciated
TIA
I got to be careful though because one good compression stroke, can blow number 1 right out, If I dont check it often.



