I need to repair 1991 Isuzu Impulse car.?

[muniss]

It does not start. Checked spark, good changed fuel pump, good pressure checked feul injectors, no electric pulse. please advise what to check next. Checked all fuses and selonoids, all O K.THE STARTER IS FINE, IT STARTS IF I USE STARTING FLUID, BATTERY AND ALTERNATER ARE GOOD.

[Steven B]

I would try having one of your buddies smack the starter (not enough to dent it) as you try to start it. If that does not work than try even an alternator

[Island Queen]

You did not mention the battery or the starter motor or the generator or the alternator. If it is something else electrical that is very very difficult to find and very tricky without real no how and experience and special testing equipment. Take it to a mechanic first to get a diagnosis. If it is electric, take it to a specialty electrical shop where they know what they are doing.