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post #1 of 6 (permalink) Old 01-20-14, 10:09 AM Thread Starter
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2000 f150 4.2v6 very rough idle and sulfur smell

It almost sounds like it has jumped timing, spitting and sputtering while driving...bad sulfur smell after it warms up, changed coil pack, didn't help. any ideas?

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post #2 of 6 (permalink) Old 01-20-14, 10:41 AM
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Re: 2000 f150 4.2v6 very rough idle and sulfur smell

Checked alternator out put in case overcharging and " cooklng " battery causes acrid fumes ?or possibly faulty cat ?
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post #3 of 6 (permalink) Old 01-20-14, 10:51 AM
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Re: 2000 f150 4.2v6 very rough idle and sulfur smell

Or could be coil on plug / plugs faulty and cat just doing it's job with the unburnt fuel not being used ?
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post #4 of 6 (permalink) Old 01-20-14, 01:11 PM Thread Starter
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Re: 2000 f150 4.2v6 very rough idle and sulfur smell

Battery is good, alternator is good. I changed coil pack, wires and plugs. No difference
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post #5 of 6 (permalink) Old 01-21-14, 05:04 AM
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Re: 2000 f150 4.2v6 very rough idle and sulfur smell

Any codes?


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post #6 of 6 (permalink) Old 01-21-14, 09:43 AM
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Re: 2000 f150 4.2v6 very rough idle and sulfur smell

Checked compressions on each cyl ?
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