My F-350 powerstroke with a 6.4l motor is blowing air back through the air breather and has a loud hollow knock and no pressure out of manifold after the catylitic converter was taken off. Plz help


Asked by welder02 Aug 14, 2013 at 08:06 PM about the 2008 Ford F-350 Super Duty Lariat Crew Cab LB 4WD

Question type: Maintenance & Repair

1 Answer


this is not a job for a do it yourself guy,sounds like it has dropped a valve or a pushrod,this is a common problem emphasis on problem,hope this helps

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