Question about 1985 Ford F150

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1987 F150 rough idle, stalls, smells rich

'87 F150 with a 302 V8, just put a new engine in (from a '96 but changed over all the sensors to the '87 style to keep my original wiring for the batch flow speed density EFI and computer) it starts but runs rough and smells rich, the timing is ok, and all plugs are gapped well, fresh gas, new air filter, new fuel pump and filter, plug wires good and cap/rotor good. When put in gear it wants to stall and usually does, when accelerator is pressed it coughs and stalls. I can only think it's a vacuum leak but i've never had a vacuum leak problem before, so not sure what is the fastest way to fix this thing. thanks

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The easy way to find a vacuum leak is to start the engine, let it idle and spray some carb cleaner spray around the vacuum hoses and connectors. If the idle speeds up you have found your leak.Simple as that. 46 yrs experience..garcuda

Posted on Sep 21, 2015

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1987 F150 rough idle, stalls, smells rich - graphic.aspx?mod=reptiff&module_id=1&session_id=%7b42f14894-9aa8-441f-8d1b-0146757f530d%7d&image_guid=95d12578&print_bw=0&

Posted on Jun 02, 2009

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