Question about 1991 Ford F250
Just failed emission test hydro carbon too high all else ok. i performed a tune-up ie. plugs wires distributor cap and rotor added fuel injector cleaner (gunk out) hood saids set timing to 10 degress btdc but i cant find any timing marks..if theres anything else i can do to pass emissions it would be greatly appreciated.
Your timing marks are on the dampener pully and you need a timing light to perform the timing of the engine and i am not sure if you have a gas or diesle so just let me know and i will let you know if i can help you
Posted on Apr 21, 2009
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Posted on Jan 02, 2017
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