cylinder #4 on blacktop s13 SR20 not firering

[CX0]

i orderd a blacktop off of jazzproparts.com long and dreadful story i dont want to go threw them again.. well it took long enough getting "working" parts for it(2broken mounts, dented oil pan, bad turbo turbine wouldnt spin, looked like the thing was ripped out in a matter of mins. all the hoses were cut) and well here i am 6 months later getting it to turn over and cylinder #4 is not firering..did a compression test and it read about 120 or so and i didnt have any of the spark plugs on to fire.. and ive been having problems with the clip on the ECU first it wouldnt activate the feul pump(working atm) now this.. if anyone could shead some light i would be very obliged

[scottydog]

120 isn't great compression. Is that the same as the other 3?

If the car starts pull each plug wire sequentially. The ones that don't worsen the running are the bad cylinder(s). Pull the plug on the bad one, check for spark by grounding the connected plug and starting the engine. If you don't get spark find the bad plug, wire or connection. If there is spark you likely have a bad injector. Injectors are way easy to replace!

[Dead Serious]

i had the same trouble with my black tops no 4 cylinder.......came to find that the dude who extracted the motor with a grenade broke the connector on the injector with the cable that they wrapped around the intake and you couldnt tell untill i pulled the conecter off and the guts fell out of it....it was an easy fix so i hope thats all thats wrong with ur setup

[markex33]

120 is kind of low,normal should be around 150psi.

[CX0]

false alarm guys sorry turns out i can now add to the list of jazzproparts.com's mistakes they sent me a s14 wiring harness i started looking into kinda late cuz id assume they get some things right but ehh.. well thanks a bunch for replying