1999 Ford F 350 Truck Looses Power Whenever M Pulling Trailler Weighted Hill

1999 FORD F-350
294,000 MILES
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The truck looses power whenever I'm pulling a trailler or weighted up hill, what is causing this problem? How do I DIY fix it?
Jan 11, 2013 at 6:33 PM
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DOCHAGERTY
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  • 9,606 POSTS
  • ASE Certified Mechanic
Cat could be getting plugged up. Look at the exhaust back pressure when condition is evident. 300k might have the motor getting a bit tired as well.
Jan 11, 2013 at 6:42 PM
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