Yea the other day I tried to start my car up for the first time in three months and now it won't start.It's a 97 civic with a jdm b18c (gsr), I got spark in every cylinder, main relay is fine, and the fuses is fine. Can somebody help me on this? Thanks in advance.

 

did you try beating on the bottom of the fuel tank ?If the pumps going bad it may have a dead spot and hitting the bottom of the gas tank might get it to run it just happened to me I beat on the tank started right up and it drove me home with no problems I am installing a new pump tomorrow

 

Are you sure your fuel main relay is good some times they go bad out of the blue. Have you checked to see if you where getting power to the fuel pump.

 

we are going to check if we have power to the fuel pump once the weather gets a little better still snowing in michigan

 

the main relay is good, i thinks it's the fuel pump itself, does anybody know how to check the voltage at the fuel pump

 

Check for voltage on the yellow/green lead going to the pump, remove bottom of rear seat, remove access panel, unplug fuel pump plug, use a meter or test light on the yellow/green lead and have someone turn on the ign. switch to run, the yellow/green should test as 12V+ for at least a few sec.
If it does, test the black lead for ground, if it's good re-plug the harness into the fuel pump plug and turn the ign. on again, if you do not hear the fuel pump "hum" for a few sec. replace the fuel pump it is defective.
If on the other hand the yellow/green does not show 12V+ for a few sec. when ign. switch is turned on the problem is not the pump and you need to drop the PGM-FI Main Relay and do the same test there on the yellow/green, [relay must stay plugged in] you will find two yellow green leads at the PGM-FI Main Relay, one is power for the fuel pump, [from the fuel pump relay] and the other is power for the injectors, ECU/ECM and a few engine sensors, [from the injector relay], the yellow/green from the injector relay will test as 12V+ constant once ign. key is turned on, and as mentioned the yellow/green from the fuel pump relay will test as 12V+ for a few sec. when ign. switch is turned on, that will be 12V+ constant once engine is running.
The other leads at the PGM-FI Main Relay are...

Black - ground at all times.
Yellow/black - 12V+ when ign. is in run or start, fuse 13-15A.
White/black - 12V+ hot at all times, fuse 44- 15A, engine bay F/B.
Blue/white -12V+ hot when cranking to start, fuse 13 -15A
Green/yellow - fuel pump relay control lead from ECU/ECM, ground.

Test all the leads and let me know. 94