5.4 Tritan spark plug blow (part 2)

MSS3020 · Mar 4, 2014

I may have escaped the big one on this one.. As I said yest. post. blew a plug ruined the coil. BUT got to it last night and plug looks good so I put it back in hole and torqued to specific Inch lbs as specified and it torqued..Assuming it vibrated loose and out??? Happy ME.. I am getting a new coil and should be fine. I WILL be taking the rest out and checking and torquing with anti seize applied. Thanks for all the comments and suggestions.. See what happens..

k6zrx · Mar 4, 2014

Normally anti-seize is never used on spark plugs because of the possibility of migration to the center electrode and shorting it out. This Ford engine has a specific problem, where anti-seize makes really good sense. Just apply it very sparingly and carefully.

Glad everything looked OK. Hopefully you got away with no major problem. I hate these kind of problems which should never happen (I know of factory installed plugs letting loose in these engines).

Josh

jimg.allentown · Mar 4, 2014

Sorry to call you out on this one, Josh, but anti-sieze is ALWAYS used on aluminum cylinder heads. Not using it is simply an invitation to trouble.
The reason is that when steel and aluminum come together (as in a steel spark plug in an aluminum head), they can adhere to each other with the result being a stripped thread. When properly applied, migration to the electrode is simply not a factor.
This comes from a retired Ford tech with over 40 years of experience (me). Been to most of the factory training schools, ASE certified Master Auto and HD Truck technician.

IA Roy · Mar 4, 2014

I don't know about torque specs. With anti-sieze, you might be more likely to strip the threads as the anti-sieze acts as a lubricant. It would be best to find out both instances for torque specs with and without.

Janicholson · Mar 4, 2014

Airplane (mica based) anti seize works and is non conductive. Is used on and by the general aviation industry. Jim
A source

Hobo,NC · Mar 4, 2014

There has been a trend to get away from anti sieze on spark plug treads.... Before A.S. I used a drop of oil and had no problems I stopped using A.S. a few years ago and no problems since... A.S. can cause issues...

40 years wrenching and plan on 40 more...

GVSII · Mar 4, 2014

(quoted from post at 12:04:49 03/04/14) Airplane (mica based) anti seize works and is non conductive. Is used on and by the general aviation industry. Jim
A source

The product literature contradicts itself.It reads that it is good to use on spark plugs or other high heat installation items because of it's insulating properties.Next paragraph says it shouldn't be used where good electrical contact is necessary.(NOTE-I've used A/S on everything from roller skates to milatary aicraft)

Janicholson · Mar 4, 2014

Using it between the battery cable and the battery post would be inappropriate. Using it on a sparkplug is not going to prevent 10000volts from ""leaping"" across the threads.

Jim

Janicholson · Mar 4, 2014

See source of Mica antiseize above Jim

jerrybigrig · Mar 4, 2014

Josh. What do you mean by migration of the spark ??

Bryan inIowa · Mar 5, 2014

It WILL blow out again ,and you WILL ruin another coilpack . Have an insert installed and be done with it . We used to see 3-4 a month in my shop .

5.4 Tritan spark plug blow (part 2)

MSS3020

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k6zrx

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jimg.allentown

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IA Roy

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Janicholson

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Hobo,NC

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GVSII

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Janicholson

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Janicholson

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jerrybigrig

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Bryan inIowa

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