Hey.....I am contemplating replacing my plugs and was reading where it says not to work plug back and forth while the solvent is soaking down the threads. Why is this? I would think that working it back a forth just a tiny bit would help soften the carbon after it has soaked through. I found on another forum where a tech said that he worked the plugs back a forth a bit and he thought that it helped.

 

If your talking about the 04+ 5.4l engine I would follow the TSB to the tee. Crack them loose about 1/4 turn and soak for a while then try to work the plug back and forth during the removal process. I have not removed these myself and not willing to try. I'm taking my truck to the dealer next week to have the dealer change them and put a set of the new champion plugs in.

 

You need to wait a while for the solvent to do its job. It is all laid out in the procedure.

Regards

Jean Marc Chartier

 

Another vote for following the procedure to a tee. If I get one that gets real tight I will back it off just a bit, but not working it back and forth.