So I bought a 95 s10 2.2 liter and everything was fine till a friend started messing with the gears when it was off. I've changed the fuel pump the relay and the filter and I got a new battery. I doubt my friend changing the gears had anything to do with it but it won't start and I have no clue where to look next. Please help.

 

Does the engine crank and not fire? Please be more specific. Thanks.

 

What gears did your friend mess with?

 

is there any power at all ? I am thinking maybe the neutral safety switch but I could be wrong ! we could use more info from you like does it crank and is it getting spark and gas ?