No fuel to cyl 4 KA24de

[TougeMS13]

No fuel getting to cylinder 4, just dropped out on the freeway. Have changed the injector with cylinder one, still no fuel and the injector works fine on cyl 1. Hooked up a LED light to check pulse, seems to be pulsing fine. Vacuum lines all hooked up and no cracks. Ive searched but havent come up with anything.
Thanks

[ryanwrx]

How did you determine that its not getting fuel? Whats the plug look like? Did you check compression?

[TougeMS13]

Spark plug is dry, and when its running and missing, I smell no excess fuel coming through the exhaust.

[compactfean]

Try switching injectors and see if problem stays with that cylinder or fallows the injector.

[TougeMS13]

Have switched injectors, problem stays with the cylinder.

[compactfean]

You can try soaking it in sea foam. Also if you know someone with an ultrasonic parts washer and clean it in there (harbor freight has them for $100 or so) other then that, replace injector.

[TougeMS13]

Ive taken good injectors from cyl 1 and 2, that work perfectly, and cylinder 4 still gets no fuel.

[compactfean]

So the problem stays with the cylinder, not the injector. That means you are having damaged harness or bad ecu issues. Do you have 12v to that injector when you turn the key on?

[TougeMS13]

Yeah, thats what I was saying, problem is with the cyl. Was unsure of voltage that should be to the injector plug. Will check for 12v when I get home and try another ecu, running an Enthalpy right now, hope that isnt the issue.
Thanks, heard mixed things about the amount of voltage that should be there.

[compactfean]

It should be 12v unless its running, than it could be as much as 14.x volts. If you have voltage then there is an issue with the ecu or the wire going to the ecu. Of you don't have voltage then that should be a very simple fix.

[TougeMS13]

Cool, will check it out as soon as I get in.
Thanks again