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Old October 5th, 2019, 08:09 AM
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The Bone The Bone is offline
 

Join Date: Nov 2018
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Sounds like the truck is running rich. Do you have a tune in the truck? How far did you drive the truck before the test? you may have to drive 10 miles to make sure everything is up to temperature before the test. You didn't mention air filter. It has to be clean. It could mean that the computer is dumping to much fuel. Does the exhaust smell rich?