Question about 1991 Ford F250

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Where are the timing marks for 1991 f250 4x4 7.5 gas engine

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.

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  • zrock_wa Apr 21, 2009

    its gas thanks

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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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