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Discussion Starter · #1 ·
i have a friend w/ an 04 6.0 and hes having trouble w/ the fuel economy he was getting 14 now 11, could it be the egr?????
 

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could be, might also be air filter or fuel filter...
 

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Discussion Starter · #3 ·
he changed em both, about six months ago he had the head gasket replaced, its only got 40k, dont know a lot about those 6 liters
 

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he changed em both, about six months ago he had the head gasket replaced, its only got 40k, dont know a lot about those 6 liters
Do the fuel Filters again if it's been six months. But what other symptoms his he experiencing? Does he have gauges, If so is he getting the same boost he used to get?
 
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