5.4

[fdtrucks]

I've been fortunate when doing mod engine plugs. I hit each plug hole with a crapload of ob blaster or liquid wrench and let it sit overnight. Then I run it up to op temp the next morning. Haven't broken one yet.

I may have to try the impact method. My f150 is ready for a set soon. Might be my test dummy...

 

[shane96ranger]

I've heard of the PB Blaster, or Carb Cleaner method. I would be worried about all of that crud going down in the combustion chamber.

I'm fairly certain my 4.6 had the original plugs in it when I changed them a couple months ago. Ford quit using the plugs with shorter threads quite some time ago, and these are short. It for sure had the original plug wires. Over 205,000 on the originals.

EDIT: Pics of a plug, and wire (note the 1996 on it).....

 

[adsm08]

Adsm, have you seen the 3/8" impact method for plug removal? There are a couple videos on youtube on this. I'd be a little gun shy.

Ok, just tried this and pulled out my last plug. 7 out of 8 came out in 1 piece, including 2 that I thought I had broken before I remembered about this and tried to losen them by hand. the one that broke was #4, the one way in the back.

Sorry Shane, can't rep you yet. I gotta spread the love around first.

 

[shane96ranger]

How hard was the broken plug to extract?

Sent from a Commodore 64 using a 300 baud modem

 

[adsm08]

We have the good extractor, but I was pussy-footing it because I snapped the electrode off. It took me longer to get that one plug out than it did to get the other 7.

It isn't hard, it is just delicate because, despite what the tool maker says, it is possible to push the ceramic in too far.