2003 chevy van 5.3 liter When you replace the plugs how do you torque them?
the auto zone person to put some antisieze on the threads ,but does not that change the torque readings ??
oh yeah the plugs have a metal tube(heat shield ?) around them. does this come off with the boots or do you leave it in place ?
I couldn't get a torque wrench on any of the back bank of plugs, so I hand tightened then turned them a quarter turn or until tight. I used a stubby ratchet so it would be hard to over torque them. Since they only require 15 ft pounds, that was close enough. I put anti seize on mine and so far all is operating normally. My back bank all had heat shields. They came out with the wire. You just take them off and slip them on the new wire.
Sidenote: I was a bit surprised that the plugs that came out were heat range 3 while the replacement plugs were heat range 9. Yet both are listed as suitable for my mini-van. Interesting.