What years were the most common to see the spark plugs blow out of the cylinder heads? 97-01 or did it go all of the way to 03? Thanks.

 

Till 03 (I think, look out, I'm thinking again) LOL

 

Thanks. So 03 is included in this. Basically all the way up until Ford released the new 5.4L?

 

Well, I am just going on what I have in my notes. And yes, they updated after 03, so, that would make sence. I am sure others will confirm that or set me strait.

May I ask what year and motor you have?

 

They fixed the plug blow out problem in late 02 early 03.
Most 03s have the better heads.

Phil

 

my '02 5.4 spit one out

 

Was there a casting number change on the heads - I heard that as well, changed sometime in 03. You should be able to verify from the head #'s. I just don't know the #'s..

 

My 2002 Expedition spit one out 3 weeks ago. Lucky for me I was just about to pull into the parking lot at work.

 

I was driving through a neighborhood and noticed an older guy working on an 02 f150 so i pulled over to see what he was doing. He said he had an air leak in engine and he was trying to install a new plug and coil. He stated that he could not get the coil tight enough to hold the plug in. So I mentioned to him that the plug needed to be threaded into hole like a plug on a lawnmower, motorcycle, etc. He said that all he had ever worked on were chevys and wasn't sure about installing a plug on his ford that he just purchased a week earlier. He thought the coil was suppose to hold the plug in!!!

I asked to look at the old plug and it was attached to the coil with some alum on threads left from head after getting blown out of engine. I told him to call his dealer and have a tow truck sent over because the head needed an insert installed. I think he said truck had about 120,000 so I wonder if the dealer new there was a problem with the engine.

I bought my son a used '01 4x4 and we changed the plugs this past summer and we found two plugs just finger tight. Truck had about 70K miles on it.