1997 GMC Jimmy, was running until i went to start it this morning, &

DebbieR

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nothing. turns over, spark but no start? . Have noticed at red lights, RPM surges up then down prior to this. HELP please!
 
Do a check on items that control fuel delivery.
Crank over again, yank a plug or two to verify if wet or dry.
Likely dry?
May also be wet.
Plugs badly worn?
Ignition wires shot and old.
Ign. wire connections clean, corrosion free and dry?
 
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