why would a 87 ranger back fire like a shotgun? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 02-21-2012
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why would a 87 ranger back fire like a shotgun?

rpms don't seem to matter. speed don't seem to matter, but the gas peddle becomes unresponsive and it back fires. it looks like the muffler is trying to explode from the inside, and it blows flame out the tail pipe. sometimes i can rev out of it after a few minutes. sometimes if i let it die i can give it a few and it will start. i think it has something to do with air or gas but i don't know where to even look. any ideas?
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Old 02-21-2012
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what engine? EFI 2.3 or carb 2.0?
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Old 02-21-2012
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Running rich

Timing off

Whens the last time you did a tune up?
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Old 02-21-2012
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it is a 2.9 4x4 1987 xlt ranger
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Old 02-21-2012
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blhde nailed it... retime the engine, replace coil, dizzy cap, rotor button, plugs and wires, seafoam the engine...
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Old 02-25-2012
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engine timing good and tune up good. o2 sensor wires are cut and twisted together. could that make that much difference.
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Old 02-25-2012
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Depends on if its the up-streams or down-streams.

Should have a CEL on for that, have you read the codes?
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