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post #1 of 5 (permalink) Old 04-12-09, 03:28 PM Thread Starter
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confused 1971 F250 Emissions

I have a 1971 F250 with a 390 in it, it failed emissions due to high levels of HC. i have leaned out the carb, put a new airfilter on, new spark plugs and wires, advanced the timing, and have run fuel treatment, carb cleaners, and seafoam through it religiously. is there anything else i can do besides replacing the carburator and switching to electronic ignintion?
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post #2 of 5 (permalink) Old 04-23-09, 11:41 PM
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Re: 1971 F250 Emissions

i dont know as how much an electronic distributor would do for ya. if the points distributor is in good shape they normally do just fine. ive never heard of a truck of that age being emissions tested. i had a 73 f100 and it would poor black smoke out of it like a diesel but it always passed inspection cause they couldnt hook it up to a computer like these new ones next thing you could do is maybe throw a cat on there but that will rob ya a little power.
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post #3 of 5 (permalink) Old 04-24-09, 08:36 AM
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Re: 1971 F250 Emissions

That's what I was thinking. Wouldn't a 71 be exempt?
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post #4 of 5 (permalink) Old 04-24-09, 08:35 PM
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Re: 1971 F250 Emissions

yeah i think it started somewhere in the 90's were they were required to meet emissions.
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post #5 of 5 (permalink) Old 04-24-09, 10:38 PM
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Re: 1971 F250 Emissions

I figure before long all states will require emission testing. It's gonna suck, Bigtime!
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