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Spark Plugs?

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Old 09-07-2006, 12:10 PM
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Spark Plugs?
I have noticed a very slight pinging when under load with my 4.6 2004 and was thinking about switching to a colder plug any thoughts on this thanks in advance.

 
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Old 09-07-2006, 01:24 PM
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What all is done to your truck? If its pinging and mostly stock, it isnt the spark plug causing it.
 
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Old 09-07-2006, 03:10 PM
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Originally Posted by FATHERFORD
What all is done to your truck? If its pinging and mostly stock, it isnt the spark plug causing it.
I haven't done anything at all except 2" drop to rear... engine nothing at all.
 
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