1994 civic dx d15 motor

I swaped wire harnesses and the new one was the wrong harness, so I put the original harness back in and now the car wont start. It cranks over and getting fuel to the fuel rail and its getting spark to all 4 plugs. What did i do wrong??

 

Recheck all your connections...

 

check all the cennections every thing seems good.

 

Even on the starter..?

 

yea. i unpluged every thing and plug it back in, and it still just cranks over, but still wont fire

 

ttt

 

if it's only getting fuel to the rail that's your problem, verify that the injectors are functioning and you are getting fuel in the cylinders

those are the two of the three parts of the equation an engine needs to fire
fuel+spark+compression=ignition and obviously you didn't lose compression by changing a harness and you say you have spark, so fuel is your problem

 

He is correct. Unplug an injector connector. Check with a test light. You should have power on one wire with the key on. The other wire should pulse the ground as you spin the engine over.

 

have power to the injectors.. swaped with 3 ecus and still not starting

 

Is spark bright white at the plugs?

Are the plug wires installed in the wrong firing order on the cap?

Is the mechanical timing correct?

Will the engine start with starting fluid?

 

plug wires are in the right firing order.
spark is alittle small but still spark.

 

The key question is whether there is actually good spark at the plugs. How are you testing it and what exactly do you see?

 

i pulled each plug out 1 at a time and cranked the motor over. the plugs are sparking might not be the biggest spark