Iv seen this on here asked many of times but nothing with answers I need.
Iv tried
New Dizzy
New Ecu
Has new Feul Pump
its tuned
I dont kno what to do!
It will start but die instantly I have no clue where to start next im fed up with trying to fix it and nothing happens any HELP would be Awesome Please and Thanks Guys!

 

PLEASE HELP GUYS!

 

You should try giving up more information. For instance, what happens when it dies? CEL trip? Timing (mechanical/ignition) correct? Sensors installed correctly? Car this engine is in?

Right now all you told us is what you replaced.

 

Its a 93 civic coupe ex.
It only throws a o2 sensor cel code. As for the rest timmings right, an Sensors are good.
Its ran forwhile like months then one day Just wouldnt stay runnin anymore and it was not cold out then.

 

find a way to test the fuel pressure

 

bad main relay possibly

 

Is this a fresh swap or has it been running fine previously?

 

Ran Fine For awhile months. its b18a1 b16 head its cammed, skunk 2 intake, p30 pistons heads all the way built 3 angle valve job lots more