Just got round to changing my plugs only to find 2 finger tight, 1 almost finger tight and 1 nipped up. What sort of issues would this have had on the car?

 

Count yourself lucky you didn't have to use a heli coil.

 

I'm glad they're done and dusted to be honest. I manage to fit them without incident, well apart from getting the extension bars.......... I've torqued them up to the correct amount as well so fingers crossed all will be well.

 

Could have caused lose in compression leading to a misfire and could have been blown out stripping the thread.

 

Glad I decided to do them now!