spark plugs

[Idaho]

hey
...so I've been lurkin' here the last few days. my keyboard is greasy. thanks for all the info to all y'all.

My 2000 xlt 4.0 was coding p0305. i changed the plugs. and still got the annoying miss. I got down past the throttle body, into the rail and got the injectors out. I can work on tractor implements but never gone this far into my own truck....fun though. had my injectors worked and eventually put it all back together and still got the missfire.

during a compression test i found two hairline cracks in #5 inside plug(new plug) porcelain. !!!! damn. all that work.

anyway, running great now, check engine light wet off by itself. great.

right now i've got autolite iridiums in there.

can y'all tell me what the factory plugs you're speaking of are?


thanks again. you guys are funny mofo's .

cris

 

[almostclueless]

autolite double platinums.

 

[Big Jim M]

hey
...so I've been lurkin' here the last few days. my keyboard is greasy. thanks for all the info to all y'all.

My 2000 xlt 4.0 was coding p0305. i changed the plugs. and still got the annoying miss. I got down past the throttle body, into the rail and got the injectors out. I can work on tractor implements but never gone this far into my own truck....fun though. had my injectors worked and eventually put it all back together and still got the missfire.

during a compression test i found two hairline cracks in #5 inside plug(new plug) porcelain. !!!! damn. all that work.

anyway, running great now, check engine light wet off by itself. great.

right now i've got autolite iridiums in there.

can y'all tell me what the factory plugs you're speaking of are?


thanks again. you guys are funny mofo's .

cris

CRIS Look in the back of the book in the glove compartment! It will tell you what came in the truck..

My book in my 02 SOHC says: USe AGSF34FP .. Nobody carries that plug, prolly because the off brands have more proffit.

So I called FORD and they said the plug NUMBER had been supersided by the # SP-440 (mororcraft).

So I called several local parts houses and found one that said the plugs were in the warehouse downtown and they would be at the parts house in 2 hours..

SO I have in my hand 6 new plugs! The boxes have BOTH numbers printed on them and the plugs ONLY have the OLD number on them.

Big JIm

 

[Idaho]

Big Jim-
thanks for the response.
unfortunately i ain't got the book that came with the truck. grrr

I'll have to get on some research.

mine's a 2000 4.0 v6


anyway, thanks for your time.

i'll try and find'em plugs

 

[Bob Ayers]

Big Jim-
thanks for the response.
unfortunately i ain't got the book that came with the truck. grrr

I'll have to get on some research.

mine's a 2000 4.0 v6


anyway, thanks for your time.

i'll try and find'em plugs

I just looked your plugs up on the Motorcraft website, and they are:

AGSF22FM

 

[Idaho]

...you guys are the greatest. thanks for doin' my research for me.
...ever make it up to north idaho, come and have some real good beef.

 

[Idaho]

....other than defect or being dropped before being installed, what would cause a spark plug to crack inside?
coilpack malfunction?
cylinder goblins?
too much beer in gas tank?

 

[Bob Ayers]

....other than defect or being dropped before being installed, what would cause a spark plug to crack inside?
coilpack malfunction?
cylinder goblins?
too much beer in gas tank?

Pre-ignition (pinging) is probably the most common way to crack the insulator.

 

[Big Jim M]

Most are cracked on installation. Some have internal stress from the casting which eventually leads to a crack.. I really never heard of one cracked from pinging...but I wouldn't doubt that either.
Big JIm

 

[Bob Ayers]

Most are cracked on installation. Some have internal stress from the casting which eventually leads to a crack.. I really never heard of one cracked from pinging...but I wouldn't doubt that either.
Big JIm

Check this out Big Jim.....Page 17:

http://www.northernstar.ab.ca/ftp/images/pres/BrentPowers.pdf

 

[97ranger4x4]

...too much beer in gas tank?

How could you waste such a precious drink? I think its a sin to even let your beer get warm!

 

[Idaho]