Question about 1988 Ford F 250

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I have a ford 1988 f250 truck 8 cylander 5.0 engine. I replaced the fuel filter but there is another filter between the fuel filter and the fuel tank. What is that filter for and do I have to replace it? My real problem is that when you go over 35ish it dies and will not start for about 30 minutes. I replaced the fuel filter but for some reason my Dad needs me to know what this filter is and what it does. I tried looking in the Chilton book but no luck. Can you please help. No I have not driven the truck since we replaced the fuel filter.

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Hi Trinity, that black plastic housing is the switching valve for the fuel tanks and sometimes they do have a filter in them . In order to diagnose the true problem you need to run the truck until it shuts down and then see if you have fuel and pressure at the fuel rail on the engine,if you do then, you need to check for ignition spark at the spark plugs if no spark check for voltage at the ignition coil then repair as needed

Posted on Aug 31, 2010

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