Will an air rail leak affect performance 4.9 ford??

Asked by GuruYBR2D Mar 25, 2019 at 01:48 AM about the 1996 Ford F-150 XL 4WD SB

Question type: Maintenance & Repair

1 Answer
41,945

Auto_Centric answered 5 years ago

Emission device..dilutes combustion charge this system (air injection) is really detrimental to engine performance but was related to EPA regulations. Off road trucks have these removed.

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