Check/change air filter.
Check/change spark plugs & plug wires. The wires can be check with an OHM meter, and the specs for the resistance in the manual. So can the ignition coils.
Change fuel filter...easy.
Last, if you have scanner...check MAF(mass air flow sensor) for operating specs...5g/sec at idle to 300gal/sec+ @ 3,000 RPM.
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