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 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

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • loss of power? 6 answers

    I have a 04 with the 6.0 and love it. But I have noticed the take off takes a lot of pedal to get this beast moving. Not too mention the mileage is terrible. I have driven other 6.0 and mine just is...

    2004 Ford F-350 Super Duty


    Maintenance & Repair

  • 2005 F350 6.0L Powerstroke won't crank 4 answers

    My 2005 F350 6L Powerstroke diesel will not crank. Both batteries are new and starter/solenoid are new. It had this problem a week ago, and I replaced the starter. Truck fired right up with no iss...

    2005 Ford F-350 Super Duty Lariat Crew Cab SB


    Maintenance & Repair

  • f350 diesal 4x4 no start 3 answers

    during winter i have no trouble with truck, but once it gets hot outside and i drive back to truck most of the day, than i shut off to go in a store and come back to start truck and no start, i hav...

    2009 Ford F-350 Super Duty FX4 SuperCab LB 4WD


    Maintenance & Repair

  • Where is the fuel pump cut off switch located? Where is the electric fuel pump located on the 1999 f-350 super duty 2 answers

    Truck lost power and eventually cut off and won't start back. Fuel filter changed, cleaned air filter, checked engine oil. TRUCK CRANKS BUT WON'T START. No fuel getting into the filter bowl. Where...

    1999 Ford F-350 Super Duty XL Crew Cab LB


    Maintenance & Repair

  • Oil leaking out of valve cover air filter hose 9 answers

    My 1995 Ford Escort is blowing a significant amount of oil through the hose that goes from the valve cover to the air filter. When I put a new air filter in, after driving the car the air filter gets...

    1993 Ford Escort 4 Dr LX-E Sedan


    Maintenance & Repair

Search Ford F-350 Super Duty Questions

Ford F-350 Super Duty Experts

#1 Bigbob Reece
Bigbob Reece
Reputation 1,880
#2 tikun
Reputation 1,030
#3 JoeAndJoe
Reputation 770
View All

Related Models For Sale

Used Ford F-250 Super Duty"
385 Great Deals out of 40,982 listings starting at $2,500
Used Dodge Ram 3500"
85 Great Deals out of 2,427 listings starting at $3,000
Used Ford F-450 Super Duty"
51 Great Deals out of 2,378 listings starting at $5,744
Used Ford F-150"
2,563 Great Deals out of 196,286 listings starting at $1,600
Used Chevrolet Silverado 2500HD"
332 Great Deals out of 33,711 listings starting at $2,799
Used Chevrolet Silverado 3500HD"
116 Great Deals out of 9,750 listings starting at $8,495
Used Dodge Ram 2500"
128 Great Deals out of 5,493 listings starting at $3,990
Used GMC Sierra 3500HD"
53 Great Deals out of 4,396 listings starting at $8,500
Used GMC Sierra 2500HD"
109 Great Deals out of 15,396 listings starting at $2,995