My ranger will turn over but want start. on 1990 Ford Ranger

it sat up for awhile I put a new battery on it and it turns over but want start. I don't know what to try first

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3 answers
ck inertia switch and reset its located on rt side of firewall on pass side. push to reset if still no start ck fuel pressure
Do what globalhelper says. A little more specific on the 'sat up for a while' might help for any more suggestions. three days , three months ,three years?? Old gas , rodent damage?
spray throttle body cleaner down the intake and crank it. if it fires then dies you have a fuel problem