No fuel at cylinders 3 and 4

[mikey.watters.5]

Hi there new to this but I have a problem with my evo 5.
I have no fuel at cylinders 3 and 4. I have checked voltage to the injectors it's good. Same at all 4 connectors. All injectors are good, have been swapped and checked. If I use a test lamp on crank it flashes on cylinders 1 and 2. I have checked writing back to the ecu and everything is ok continuity and resistance. I believed it was the ecu not switching the earth but have since replace it but I have the same problem. Checked the ecu earths too. It's driving me insane and would be very greatfull for a fresh insight or any help at all??? Thanks

 

[Simon@NTS]

Checked the injector resistor pack ?

 

[mikey.watters.5]

Yeah, getting 10.8 volt feed to injectors. I don't know if being daft but it's like the ecu isn't switching the earth??

 

[Simon@NTS]

What's happenig with each one from ecu switch to battery live? On cranking?

 

[mikey.watters.5]

Well I had a test lamp in place of the injector, flashes on cranking at 1 and 2. But nothing at 3 and 4. There is a live at all 4 cylinders do must be the earth? Swapped ecu but surely no the same problem with both ecu's?

 

[Simon@NTS]

10.8 doesn't sound a lot I would have thought you'd see 12v there

 

[mikey.watters.5]

That's at the injectors? 12v feed to resistor. 10.8 to all injectors and 1 and 2 are working?

 

[Simon@NTS]

Put test lead to battery live and test each one that way on injector earth and crank to definitely eliminate ecu and wiring

 

[mikey.watters.5]

Thought about that, worried about spiking ecu? Nothing to loose I guess. If I get a flash must be the resistor?

 

[Simon@NTS]

Also check battery voltage at each injector with injector plugged in to check any anomalies while cranking

 

[Simon@NTS]

Thought about that, worried about spiking ecu? Nothing to loose I guess. If I get a flash must be the resistor?

Is it breaking down under load maybe?

 

[Simon@NTS]

You won't spike ecu doing battery live to injector Earth switching test