Hey guys, I posted the earlier thread about the plug gap for the iridiums......the reason I had to change mine were because the other day I day I was driving around 70-75 NO BOOST and blew a plug out of the head!!! Has anybody else had this problem? The reason I ask is because when the guy from the machine shop came to ttry to heat coil the head so I didnt have to replace it, he said they have had several Lightnings come into their shop with this problem. The guy putting on all my mods said these trucks were notorious for this. Just wondered if this had happened to anyone else and wanted to warn everyone. I was told it was a good idea to check the plus about every oil change or so to make sure they are tight. Sucks when a $10 plug costs you $400 in repairs!!!!!!

 

If you are still under warranty I would take it to the dealership and have ford fix it. Pretty much everybody knows about the spitting plug issue. It happened to me and ford fixed it under warranty

 

Yeah, plug spitting hs been happening since the gen 2's inception....I got all my holes helicoiled now....but I heard tht the 03 Lightnings come stock with all helicoiled plug holes.....

 

All the 5.4 liter motors have had issues with spitting plugs. Do a search here and you will find dozens of threads on the subject

 

any updates on the truck? Im not racing this weekend so i will be out in town.

 

QIKSLVER, if your in warranty and have a mod friendly service dept have the replace the head! but if not..do not heli coil! use a time sert! I have been repairing v6,v8 and v10 heads withthem for some time now and NO failiers. Time serts work and have been araound for 20 years! so look into them!

Scott

 

If you're getting new heads (either out of your own pocket or under warranty), ask for the updated 03 heads with 8 threads. You'll be glad you did