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Old 03-31-2012, 10:29 AM   #1
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Default Blown plug repair

I just experienced the all too common blown spark plug on my 2003. I have read a lot of great information on this forum focused on how to make repairs using the Timesert kit or helicoils.

However, I have two more basic questions that i coukd not find answers to:

#1 With the plug blown, is it safe for me to drive my truck 15 miles back to my home for repairs?

#2 The plug itself looks fine, no thread damage. Is it possible that the plug just worked its way out and that I do not need to repair the engine? I was considering just trying to put the plug back in and replacing the COP, which did break with the blow out.

Thanks

Last edited by johnnyford; 03-31-2012 at 11:24 AM.
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Old 03-31-2012, 07:50 PM   #2
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I don't recommend driving that far. As for the plug,mine looked fine and tried to put back in but the head was stripped.. I had to bore out the head and use a "sleeve" style helicoil. Don't use the one that looks like a spring. Follow the directions and you will be fine.
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Old 03-31-2012, 08:32 PM   #3
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what engine do you have ?
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Old 03-31-2012, 08:42 PM   #4
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Default re:

Thank you for the replies. I have a 4.6 Triton v8.

I cannot work on the vehicle where it is, so I suppose that I will have to tow it home, huh? Funny, usually I am the one doing the towing. Is there a temporary plug that anyone would recommend?
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Old 03-31-2012, 09:01 PM   #5
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is the plug blown out of the cylinder ?
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Old 03-31-2012, 09:06 PM   #6
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You can use the same plug but recommend a new one. Motorcraft platinum is the plug you want. Also I have an 03 5.4 triton
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Old 04-01-2012, 10:05 PM   #7
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Default re:

Yes, the spark plug has blown out and the COP is broken. The threads on the spark plug look ok, but I have not had a chance to look at the threads in the head.
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Old 04-01-2012, 10:38 PM   #8
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I wouldn't suggest driving it. I would HIGHLY suggest using a Timesert for the fix and torquing the rest of the plugs to the correct 28 ft/lbs dry torque spec.
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Old 04-01-2012, 10:41 PM   #9
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hmm i learned something new i thought the 5.4's only had the spitting the plug out issue
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Old 04-01-2012, 11:06 PM   #10
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Yep all 2V motors seem to have this issue if improper torque is used. For the 4.6 the issue appears to have continued all the way to the 2008 2 valve motors.
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Old 04-01-2012, 11:06 PM
 
 
 
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