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Spark Knock At Freeway Speeds


slolearner

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Knocks at freeway speeds and sometimes when pulling in 4th gear too....I have heard that the EGR could be dirty or the lines running to it?
 


Wicked_Sludge

Wicked_Sludge

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EGR is a good place to start. any codes stored in the computer?

other possible causes could be bad fuel, carbon build up, incorrect spark plug/heat range, etc.
 

slolearner

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spark knock

no codes..........
 
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