5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Backfiring and sluggish over 3k rpms/bad MPG

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Old 03-09-2009, 05:18 PM
  #21  
BladeX10
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I got rusted platinum plugs.. I think that may be a big portion of the problem..
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Old 03-09-2009, 07:24 PM
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mjr46
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Originally Posted by BladeX10
I got rusted platinum plugs.. I think that may be a big portion of the problem..
if you say so............a standard resistor core plug is what you should use in that car, not platnuims
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Old 03-09-2009, 08:30 PM
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BladeX10
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Originally Posted by mjr46
if you say so............a standard resistor core plug is what you should use in that car, not platnuims
Platinums is what the car had before i bought it. From what i gather.. These plugs have been in the car for a few years. I swapped them out for regular plugs

While i was removing some wires. a few of them where barely on the spark plug.

Just started it and it sounded a bit better.. Car still shakes alittle so now that gots me pointing at the wires. It stucks being broke or else i would have bought some. Tomorrow ill be swapping out the fuel filter. Got any tips?
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Old 03-09-2009, 10:47 PM
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replace the cap, rotor and wires
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Old 03-09-2009, 10:48 PM
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oh and fuel filter should be wetween the two rear tailpipes above rearend housing
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