I just finished doing a 93 B18A1 swap into my 90 civic dx hatchback. I have not been able to get the car running after about 20 hours of troubleshooting. I have retraced all the wiring a half a dozen times and everything seems to be ok. I am using a JKOB conversion harness and have also tried another known good conversion harness with no luck.

It is getting great spark, is timed right (checked twice to verify), is getting 45 psi to the fuel rail but its getting no fuel to the cylinders.

I have tested the distributor sensors and they all read around 356 ohms which is within spec.

I am using the obd1 injectors and have wired the 4 wires that go back to the ecu to their proper pins. The yellow/black wires are all tied together to that 8 pin grey plug. Injector ohm age and voltage has been tested as well. There is 12 volts going to the yellow/black wire for around 2 seconds then it shuts off(it shuts off at the same time the fuel relay clicks back off after fuel pressure Is built up). Upon cranking the engine over the voltage goes back up again to around 11 volts. I didn’t have an injector noid light so I did the ghetto test light through the insulation on one wire and it is flashing like I think it should be as the ecu is closing the circuit to allow current to flow through the injectors. I even pulled off the fuel rail, held all the injectors in while my friend cranked over the engine and the injectors did not spray.

I pulled off the fuel relay and tested it and it is fine.

There is no engine codes being thrown.

All tests have been done as per the steps outlined in the factory service manual.

I pulled off the injectors tonight and am going to get them tested but I have a hard time believing that all 4 injectors would be dead. However I bought this engine out of the car and have since had it rebuilt. It was just put in my car last weekend and I cant say for sure that all the sensors were good before but I have tried a P75 ecu and that didn’t help out at all.

Im pretty much at my wits end with this thing so I thought id see if you guys can think up some more things for me to check.

Thanks

Steve

 

Have you tryed to get the car running by spaying brake spray inthe intke while you turn it over if it runs then you definently have a fuel delivery problem also try adjusting your valves because if they are to tight that will decrease your compression and it wont start, for a motor to run you need spark, fuel and compression.

 

no i havent tried spraying anything in the intake to see if it will fire. The reason why i havent been too focused on valve clearances is because i know for sure that no gas is getting into the engine. The only thing i have not tested is replacing all my injectors. I will be trying this later today.