280z racer

Ok the car has spark, the fule pump was not terning on so I ran a B+ to it and it works, but the fule injecktor's are not geting a signal is it a relay or modular or what I have no clue.

entropy31

made it a tad easier to understand.

280z racer

Ok. I have spark and tried to start the motor and nothing. Then I found out the fuel pump was not on, so I ran a B+(power wire) to it and it turned on. So I tried to start it again and nothing then I used ether and still nothing, then I checked if the fuel injectors for power nothing, so what is it?

NismoPick

What method did you use to verify no power to the injectors? Hopefully not just a regular light bulb or voltmeter...

snwbrderphat540

yeah, you need a fancy LED. lol

280z racer

I used a diod fuel injecktor tester. I thingk it mite be the fuel pump relay or the EFI relay.

snwbrderphat540

its not the FP relay it doesnt control anything but the FP. could be the efi relay but then your entire ecu wouldnt work. do you know if your ECU is even getting power/turning on?

megs

Grab yourself a mechanics stethoscope and put the needle on the injector while someone cranks. If they are getting power you will hear them open and close.

Megs

280z racer

there is wire by the battery that is frayd and looks like it should go to power, it has a weight plug below the fray. when I put it to power I hire a cliking on the driver side.

280z racer

is there even a fuel pump relay on a 77 280z?

NismoPick

If it has an electric fuel pump... it has a fuel pump relay.

280z racer

I can not find info to where it is?

NismoPick

Do you have the Haynes manual / FSM??? It should be clearly visible in there. If not... have you seen our documents thread that has the manual in it? https://www.zdriver.com/forums/showt...974#post194974

snwbrderphat540

go me!!!! also there is this site:

www.atlanticz.ca

snwbrderphat540

sorry here is a direct link. but the site seems to be temp down

http://www.atlanticz.ca/index.php?op...pper&Itemid=69

280z racer

I have the book but it dosen't tell **** for that.

280z racer

How do I test to see if the ECU is geting power?

snwbrderphat540

unplug it and use a volt meter across the prongs.

280z racer

Witch ones? And how does the EFI harness get it's power?

NismoPick

Did you see this? There are tons of tests that are explained in the Haynes Manual, and in the 280z EFI Bible: http://www.atlanticz.ca/zclub/techtips/EFI&fuel.htm (bottom left of the page).