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Ejected Spark Pug

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RedDog
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Ejected Spark Pug

Post by RedDog » Mon Dec 02, 2019 9:41 am

Lately I have had issues with first one then a second spark plug popping out. On the first, the shop needed to bore out the plug hole and insert a heli-coil. That worked well and $450.00 later we were on the road.

Now a second one have ejected. Is this a common problem with these engines? I have been around but never heard about this issue.

I was checking to see if this could be solved with JB Weld or do the heli-coil again.

Thanks for eventual feedback.
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mmsstar
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Re: Ejected Spark Pug

Post by mmsstar » Mon Dec 02, 2019 11:50 am

This is the first I’ve heard of that on the 3.0 Duratech. I don’t think JB Weld will hold up for that repair. A Helicoil is the best repair
Drove an 06 LTD FWD from July 08 to August 10, moved on to a 2011 Flex

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RedDog
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Location: AR

Re: Ejected Spark Pug

Post by RedDog » Sun Dec 08, 2019 2:06 pm

Thanks for reply. JB Weld is a temporarily Hillbilly fix.

I got the tools, and inserted an heli coil. Engine runs fine, but I have an engine check light on that tells me that “cylinder 6 misfire on start up and bank 2 lean”. Cylinder 6 is the one that I fixed.

I installed a new spark plug, new coil pack. The hunt for the solution continues ... :?
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RedDog
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Re: Ejected Spark Pug

Post by RedDog » Wed Jan 08, 2020 4:47 pm

And then out of the blue, the engine light was gone. So, car running fine at now 250,411 miles.
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Re: Ejected Spark Pug

Post by Webmaster » Wed Jan 08, 2020 4:49 pm

Ejecting spark plugs was a known issue in the 97-02 F150 Triton V8s, that's certainly not a common problem on the Duratec V6s. The solution on them is to over-torque them. Factory spark plug torque spec was about 14 ft-lb, upping that to 20-28 ft-lbs prevents any future blowouts. If I was you, I'd go over them all with a torque wrench to ~25 ft-lbs just as a preventative measure.

In the case of the Triton V8 as well, the best fix is a TimeSert not Heli-coil. Helicoil is inferior to TimeSert. JB Weld is obviously inferior to Helicoil 8)

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mmsstar
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Re: Ejected Spark Pug

Post by mmsstar » Wed Jan 08, 2020 8:53 pm

Here is a good video of a key locking insert https://m.youtube.com/watch?v=XyCTh23Z6o0
Drove an 06 LTD FWD from July 08 to August 10, moved on to a 2011 Flex

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