now im not a newbie on here just trying to get an answer and quick without searching im on like 3 other forums and been up till like 3am searchingand i havent had any luck so im here hopen i could get some from you guys.

so i baught aSR20 redtopmotor from jdm-online.com. then i got the harness done from heaveythrottle.com now the motor is in and the harness is all hooked up. tried to start it and it turned over but wouldnt start. so check over the spark issue and only the fourth cylender was fireing. but each wire has voltege flowing threw it. so i herd it could either be the CAS, egniter chip, or the ECU. but how the i check without haven to buy all new ones or if anyone else thinks it could be something else could you please let me know. thanks

 

i would check your cas (cam angle sensor) cause that what sends the signal to fire. and if you have power and ground to all your coils then your igninter chip should be ok. also Did you replace all your spark plugs before you swaped the sr20 in, cause if not check those cause alot of the jdm motors sit in a junkyard for many years before coming to the U.S.