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1987 - 1996 F150 Still running strong! Talk about your 8th and 9th generation Ford F150 trucks.

4.9 running rough

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Old May 31, 2014 | 10:12 PM
  #1  
rwcloud's Avatar
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Default 4.9 running rough

my 96 F150 is running rich

I have changed

Distributor
Cap
Rotor
Wires
coil
Plugs
EGR
Injectors

Truck is in time but runs like poo

any suggestions

Thanks ray
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Old Jun 1, 2014 | 03:05 AM
  #2  
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Check codes. Failed o2 sensor puts the computer into open loop=rich. And check codes.
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Old Jun 2, 2014 | 07:12 AM
  #3  
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What Rusty said. But I found that mine runs better between 14 and 16 BTDC then 10.
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Old Jun 3, 2014 | 09:03 PM
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check the sensors with a voltmeter. check the fuel pressure regulator for leaking into the vacuum hose and operating correctly. check vacuum lines for leaks
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