V10 Spark plug blowout
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4wd High
Joined: Apr 2014
Posts: 9
Likes: 0
From: Roanoke, VA
V10 Spark plug blowout
Heys guys. Just got a 'nnew' 2002 F250 4x4 , V10, after several years with Dodge (sorry). I love this truck. Only 69k on it, one owner, spotless. My question.
Having heard of the spark plug blowout issue, what percentage of engines does this occur? Is there any preventative measures? Should I go ahead and redo all plugs, or ' if it ain't broke don't fix it?
Thanks guys
Having heard of the spark plug blowout issue, what percentage of engines does this occur? Is there any preventative measures? Should I go ahead and redo all plugs, or ' if it ain't broke don't fix it?
Thanks guys
Laughing Gas
Joined: Jan 2019
Posts: 868
Likes: 84
From: Florida
I am dealing with a spark plug repair kit for the second time. I have a 5.4L 2V 2002 F-250 CCLB 4WD. Plug number 7 (Ithink) driver side (third plug in from the front), I repaired 1 1/2 years ago. I am the original owner and some years ago someone (mechanic) must have done a tune up, and had to put the repair sleeve in there. They didn't tell me. Long story short, 2nd fix in the same well. The truck is being serviced in January for a Head Gasket leak and secondary the oil leak that is also present in the gasket issue. They are going to go in and remove the timing cover, replace tensioners, check the chain, and machine both heads too. The job is too big for me, with work happening, this is my only ride. I would love to do it but it would take forever....
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
Heys guys. Just got a 'nnew' 2002 F250 4x4 , V10, after several years with Dodge (sorry). I love this truck. Only 69k on it, one owner, spotless. My question.
Having heard of the spark plug blowout issue, what percentage of engines does this occur? Is there any preventative measures? Should I go ahead and redo all plugs, or ' if it ain't broke don't fix it?
Thanks guys
Having heard of the spark plug blowout issue, what percentage of engines does this occur? Is there any preventative measures? Should I go ahead and redo all plugs, or ' if it ain't broke don't fix it?
Thanks guys
Tuned
Joined: Dec 2017
Posts: 294
Likes: 30
From: Houston
From my experience the blow out seems to occur if the plugs get loose. A tap-tap-tap noise when cold and first started can be a tell-tale that it is time to torque down the plugs. Have added "plug torquing" to my annual PM procedure. If you find a COP boot welded to the plug it is likely the heat was coming from down under. Other than that, don't sweat it, Time-Sert & Cal Van have got your back.
Laughing Gas
Joined: Dec 2019
Posts: 898
Likes: 256
From: San Diego, CA
I got mine at 200k and did the spark plugs first. Reading on here, I gathered that torqueing them to 25 ft-lbs with nickel anti seize was the preferred method.
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4wd High
Joined: Apr 2014
Posts: 9
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From: Roanoke, VA
Thanks
Glad I came back to this forum. Puts my mind at ease.
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Lead Driver
Joined: Jan 2002
Posts: 8,687
Likes: 4,802
From: Itinerant
Don't be afraid to use some PB blaster or something similar the night prior to removing the plugs and give each a blast of air to remove any dirt or what-not sitting down there before removing the plugs.
More Turbo
Joined: Mar 2009
Posts: 532
Likes: 92
Heys guys. Just got a 'nnew' 2002 F250 4x4 , V10, after several years with Dodge (sorry). I love this truck. Only 69k on it, one owner, spotless. My question.
Having heard of the spark plug blowout issue, what percentage of engines does this occur? Is there any preventative measures? Should I go ahead and redo all plugs, or ' if it ain't broke don't fix it?
Thanks guys
Having heard of the spark plug blowout issue, what percentage of engines does this occur? Is there any preventative measures? Should I go ahead and redo all plugs, or ' if it ain't broke don't fix it?
Thanks guys
over tightened plugs strip the threads causing blow outs
under torqued plugs risk blowing out
IF it were mine, I’d change the plugs anyway and make sure they are installed properly as you don’t know when the plugs were changed last
Moderator
Joined: Jul 2010
Posts: 12,058
Likes: 1,565
From: Media PA
Exactly………. There was a video of testing this on some junkyard early 6.8 heads, at something like 110 ft/lbs the plugs broke but none of the short thread plug holes stripped.
More Turbo
Joined: Mar 2009
Posts: 532
Likes: 92
so yes, yes I have see the spark plugs over tightened more than once over the years and a Time Cert always helps
Fleet Mechanic
Joined: Oct 2004
Posts: 1,396
Likes: 107
From: Southern KS
Thanks for your input Napoleon.