my motor is just over 500 miles and i rolled it last year i have finally put a new cab on it but now only 2 of my fuel injectors are working ive tried looking for wireing shorts and sparkplugs but im still drawing a blank any suggestions??

 

Have you tried looking at the injector wires were they are crimped together ?, from what ive read here all of the injectors fire at once, so if two injectors are firing and two are not, then i would have to guess there is a bad or broken wire somewere.