Need your help 91 s10

Hi i just bought my s10 a couple month's ago and the problem is that it run's ok and some day's it dont start up or i will use it to go to the store and then it wont start up the motor only turn's over and nothing. tow it home and then it start's up the next day.i dont know what to check to find the problem because it will run for a couple day's problem free then do it again.if you could help me out i would appreciate it.91 s10 2.5 4 cyl 5 speed.

Not much to go on with what you have said, however,,,,

When it doesn't start, have checked:
Fuel pump running (2-3sec) when you first turn on the key?
If it is, did you check fuel pressure?
If it doesn't, check the relay? and/or power?
If it runs (fuel pump), did you check or have you changed your fuel filter?

Just a few beginning ideas.

Hi i just bought my s10 a couple month's ago and the problem is that it run's ok and some day's it dont start up or i will use it to go to the store and then it wont start up the motor only turn's over and nothing. tow it home and then it start's up the next day.i dont know what to check to find the problem because it will run for a couple day's problem free then do it again.if you could help me out i would appreciate it.91 s10 2.5 4 cyl 5 speed.

do a tuneup.

Check your plug wires. Especially the center wire from your distributer cap that goes to your ignition coil. If it is corroded and not making goood contact, this may be your intermittent problem. Your coil could be bad also. I also have had the rotor tab break off under the distributer cap. Change cap and rotor. Hope this helps

I thank you all for all your help.at least i have something's to check out i had no idea before.i just wanted to thank you guy's for the help Mahalo.

Yea, do a full tuneup with the following:

Spark Plugs (AC Delco R43TS6 Gap 0.060)
Spark Plug Wires
Distributor Cap & Rotor
Fuel Filter
Air Filter.

You should be fine after that.

Oh, and you're welcome. ;)

Spark plugs and wire isn't goin to make it start sometimes, try looking at the relay on the fire wall
sometimes the the wires don't make good contact in the relay

Don't discredit my advice. A tuneup on a 13 year old vehicle is never a poor idea.

never said it was a bad idea just not his problem, bad wires or sparkplug will make the truck run like shit