How far have you driven your Ford after the spark plug(s) blew out?
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MinnesotaEric
Super Member
Baah, you only need to pull over if a bit from Ford's fantastic, become-three-piece-OEM-spark-plugs from 2004-08 featured in the 4.6 and 5.4L engines drop into the cylinder. If they pop out, that's a fuel saving feature like Dodge cutting out four cylinders when you least expect it to.
yomax4
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Only time I have seen this was with Champion plugs in my 4 wheeler.. I drive 50K Yr. in Company owned F- 150's..Glad it's never happened to me.
MinnesotaEric
Super Member
It took well over 50K miles and as soon as everybody found out, they changed their plugs to a different design.
It depends what the plugs are going in. The Mods torque more then 7ftlb. I did some in a 97 mustang today and I went with the high side of the spec which was 15ftlb.
Baah, you only need to pull over if a bit from Ford's fantastic, become-three-piece-OEM-spark-plugs from 2004-08 featured in the 4.6 and 5.4L engines drop into the cylinder. If they pop out, that's a fuel saving feature like Dodge cutting out four cylinders when you least expect it to.
If people would use common sense there would be way less problems with the 3 piece plugs breaking off.
deepNdirt
Veteran Member
I haven't driven mine without a plug, But have experience one blowing out, the funny thing was about 1 week prier to talking with someone about the latter model ford engine "blowing out spark plug" issue, I had told him I guess I was lucky that it hasn't happen with my 6.8 v-10, Yet! .............
Then a week later just after having backed my trailer into the driveway of a home, Shut the truck off, Got out and realized I needed to back up further, re-started the truck and POP!-plop-plop-plop- I knew then I had just experience my first plug blow-out,
Why I didn't know? .... It wasn't as if I were running at high rpm's, in fact was just at an idle when it happened,
when I attempt to put it back in I could not do so because the hole was deeply recess and I had no tool to fit,
so I called my wife to come take me to the auto parts to get a new plug and a special deep socket, Once having the correct socket it took less then 5 minutes to put it in and re-attach the coil pack,
about 2 months later I was going through the glove compartment looking for something and ran across a tool, It was a tool that apparently supplied from factory to replace the spark plugs with, I didn't remember having this tool,
Only one time so far in over 168000 miles and I hope never happens again,
I couldn't imagine driving at hwy speeds with a plug out. I think would be worst then not having a muffler
Then a week later just after having backed my trailer into the driveway of a home, Shut the truck off, Got out and realized I needed to back up further, re-started the truck and POP!-plop-plop-plop- I knew then I had just experience my first plug blow-out,
Why I didn't know? .... It wasn't as if I were running at high rpm's, in fact was just at an idle when it happened,when I attempt to put it back in I could not do so because the hole was deeply recess and I had no tool to fit,
so I called my wife to come take me to the auto parts to get a new plug and a special deep socket, Once having the correct socket it took less then 5 minutes to put it in and re-attach the coil pack,
about 2 months later I was going through the glove compartment looking for something and ran across a tool, It was a tool that apparently supplied from factory to replace the spark plugs with, I didn't remember having this tool,
Only one time so far in over 168000 miles and I hope never happens again,
I couldn't imagine driving at hwy speeds with a plug out. I think would be worst then not having a muffler
MinnesotaEric
Super Member
Ford claimed the plug design was good for 100,000 miles and so people left them in. After 50,000 miles the plugs where prone to coming apart.
The issue wasn't customer related because ford set the expectations. Let's face it: nobody bought a truck because the plugs didn't need to be changed for 100,000 miles.
Diamondpilot
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Let's face it, it's a bad design. But overall the 4.6, 5.4, and 6.8 motors are bullet proof.
Chris
crash325
Elite Member
About 45 years ago on a ford V8 with a burnt valve, took out the spark plug. Ran pretty good just quite noisy.
Drove it from San Diego to Phoenix & back about a 800 mile trip.
Gas mileage was not so hot.
Drove it from San Diego to Phoenix & back about a 800 mile trip.
Gas mileage was not so hot.
MinnesotaEric
Super Member
Agreed: Bad design, but both the 4.6 and 5.4L also feature bad cam phaser designs as well. I got rid of my 5.4L as soon as i started hearing the cam chain rattle and I was out of warranty. I bought an ecoboost which, from a long term perspective may have been a bad idea.
Don't get me wrong: I still own F common, I've just sold all my options.
