I got a p0304 the other day. It was the spark plug. Why would the plug look like this after only 30,000 miles?

 

[QUOTE=chrism9232;4887216]I got a p0304 the other day. It was the spark plug. Why would the plug look like this after only 30,000 miles?



Maybe because it's an Autolite ???

 

Try a set of motorcrafts. They are what is recemended for our trucks.

 

Exactly, -heat range doesn't always hold up. What's that stuff sticking to it, Engine shrapage?

And where did you learn how to quote lol.

 

 

I'd say his is sort of a cross, a mutt rather lol.

Looks like Ash deposits maybe. Looks white, actually a little white isn't bad, - close to normal for that particular engine. A little lean is average IMO. BUT, that's some serious deposits . Looks like it may have bridged, -then it's all over. For the plug anyway. Looks like a snake-oil attack as well. What are you feeding that thing?

 

x2???

 

you putting additives in fuel? been using same fuel from same company from last 30k?

 

APP104/764? Wrong plugs for the engine. The correct plug is Motorcraft SP493.

 

Denso or NGK will work also....

 

Its not from my truck its from my crown vic but its a 4.6 same as my truck. I use mostly marathon gas. The only thing i have put in the gas is seafoam.The car does need valve seals could valve seals make the plug look like that?

 

Doesn't look like I've learned yet, does it? I didn't pay any attention to that. Check the time though, I guess I was a little foggy by then.

 

Yep, thar's the problem!

 

Ding ding ding.....we have a winner!!!!!!

That crap is junk

 

seafoam is the devil for the modulars. small engines like lawn mowers, or little dirtbikes are ok with it.