4age injectors HELP PLEASE!!!

[mick]

Hi all
Im having issues with my motor not starting its got spark and all injectors have poer and it is gettin fuel but the injectors wont pulse even know they have power???? please help

cheers
mick

[Golberg]

Sigh, why is it that people seem to think that everybody knows their exact car and setup.

Please include:
Type of engine
Type of car
Who wired it (pro, factory or backyard)

And every single other important detail about your motor which you haven't mentioned.

[Jonny Rochester]

If its a standard 4A-GE car, check the EFI fuse in the engine bay. Then check both the main relay and the EFI relay click when you turn the ignition one. (The injectors get power from a different relay).

If its a custom car, then at least check the ECU has power.

Basicaly, you just check the ECU has power and earth. Then follow the wires from the injectors back to the ECU.

Lots of reasons why, but probably a bad connection somewhere.

[mick]

hey, yea sorry i forgot to write i am doing a 4ag conversion into my ke70.
i have power to ecu.
spark. power to injectors etc
but they will not switch,
as much help appreciated thanks

[Jonny Rochester]

How do you know they don't switch? You need to hook up a light to one plug to see.

[mick]

Yea but I cant here them tick or anything. im trying to do it all atm.

[Jonny Rochester]

Look at the wires between the dizzy and the igniter/coil and the ECU.

[Nikkojoe]

Make sure both sides of injector plugs have 12V on ignition. Make sure ecu gets constant 12V for battery wire and 12v on ignition for +B and +B1 pins.

If its all good and the engine has not been used in a while, the injectors are probably a little stuck. Best to try cranking it with a little start ya bastard in the intake. Eventually it will come good. Either that or drop the injectors in thinners for a few hours, should loosen them up (remove all seals off the first though).