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P0171 & P0174 Lean - Both Banks. Have Fuel PSI #'s Need Advice

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Old Jul 22, 2013 | 07:35 AM
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mjt
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Was a large crack in the rubber intake hose between the MAF and intake. Every time you went to accelerate the crack would open up.
 
Old Jul 22, 2013 | 07:40 AM
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alot of lean codes is some sort of vacuum leak if it's not low fuel pressure. With these truck when the fuel system acts up it either wont work at all or runs rich
 
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