Wont Start Injectors Wont Fire

[Juttie205 123 2 Cars]

I have just tried to start my car I have a good spark and i have got fuel up to rail by priming pump off battery as i have a poor connection on pump but get around 8v on crank I have checked injectors and im getting no voltage and i read somewhere that there should be 12v with ignition on at injectors is that correct if so where does this positive feed come from?.

[Anthony 1,000]

Injector positive feed comes from tachymetric relay. Negative is pulsed by ECU to fire injectors.

 

Injectors get 12v at the same time as the fuel pump - typically that's on cranking or running (and if you're lucky, brief priming on initial ignition on)

[Juttie205 123 2 Cars]

Guess will have to check relay strange how i get some voltage at pump but not at injectors?

[Juttie205 123 2 Cars]

just removed relay and there are 2 very small copper wires from coil that go through pcb and are soldered on one of these is broken could this be fault.

[backroadpug 12]

You can by pass the relay by running a wire from the thick brown wire to the 2 thick white wires and if it runs you know it is the realy. I had to do the same 2 weeks ago. Got a new one for £27

[Juttie205 123 2 Cars]

where from?

[Juttie205 123 2 Cars]

you star linked it out and it starts and runs so new relay will be ordered.

[backroadpug 12]

Glad to help. I got mine from a local auto electrical company.. I know eurocarparts do them but there 38 buck..