injector firing order - Toyota Nation Forum : Toyota Car and Truck Forums

soc chaos · 09-12-2009, 04:09 PM

I swapped out my bad engine for a Japanese engine and was wondering if there is an order for the fuel injectors? I have everything in minus the EGR stuff and it trys to start but doesnt. Even if I spray starting fluid it just does a brief start and dies any ideas? Thanks

***bgrieger*** · 09-13-2009, 09:49 AM

They work the same way as the 7M here. If you plugged everything back in, it should go.

Now, have you set the timing properly? got the CPS/Distributor in correctly? Plugged everything back in correctly? Have the spark order correct (which if you are using a factory engine harness is the only order you can really screw up)? Checked the timing belt? Checked to see that you have a working fuel pump?

Lots of things to go over.

soc chaos · 09-13-2009, 02:37 PM

Well I replaced the fuel filter and pump prior to changing out the motor so thats good. Its getting fuel to the injector rail because I forgot to tighten the fuel line and it started spewing fuel up there. Why I was wondering about the injector wiring is because it has red and gray instead of being all one color. And I havnt done anything to the timing but I didnt take it off either so could it still get out of time? I am going to start with the gas its been in there almost a year and then go from there! Thanks

Jeeves · 09-14-2009, 10:58 AM

I've posted several times on the Cam Position Sensor. Those wires get damaged easily and it can give symptoms like you're describing. Also depending on the year of your engine and the one you swapped with injector resistance is an important thing to pay attention to. Not all injectors were the same. It would have been best to swap the old injectors/rail onto the new engine if they were known good.

If you search for 'Cam position Sensor' or 'injector resistance' in the supra section you should find some posts that might help you at least start investigating.

soc chaos · 09-14-2009, 01:56 PM

thanks for the info I will check that out! Someone has told me that because the prior engine was a year older that the computer has to be reprogrammed to run on a newer engine, is that right? I am getting the computer from that person, either way I should be able to check and see whats going on. Old engine was out of an 88 and this new engine is supposed to be out of a 89 or newer and does not have the EGR stuff

Jeeves · 09-14-2009, 03:04 PM

Japanese engines did not have EGR equipment. That's a moot point.

All 7mgte's are low impedance (black top) 430cc/min.
86.5-88 7mge's are low impedence (yellow top) 295cc/min
89+ 7mge's are high impedence (lt. green top) 315cc/min

So, if you have a non-turbo, your injectors could be the wrong resistance.

soc chaos · 09-16-2009, 02:22 PM

ok so I changed out the injectors and she fired right up! Idles a little rough after a little bit but seems to be working. But now I am faced with a new problem! I am not getting oil pressure.

Jeeves · 09-16-2009, 10:21 PM

If you didn't swap the oil pressure sending units too they use different outputs and the JDM sensor will not work in a USDM car.
Glad to hear the injectors made her kick :-D

soc chaos · 09-16-2009, 11:24 PM

Are those the two green outlets on the driver side of the motor maybe about a foot apart from each other? And I fixed the rough idle it was just some of the vacuum lines not on all the way because there where not any clamps on them! Also I was wondering what oil do you prefer? I have a 10-30 in it right now and going to add a quart of lucas. But the valves seem a little loud as of now, think I should throw a thicker oil in? Thanks for all your help by the way!

Jeeves · 09-17-2009, 12:14 PM

This is the oil pressure sending unit:

[img]http://www.**********s.com/supra/7m_oil_pressuresensor.jpg[/img]

That one right there is the USDM one, the JDM one is more of a bell shaped and taller and they're not interchangable.

Keep in mind we're on the passenger side, looking from the back TO the front. It is on the FRONT of the engine.

I'm a big fan of Mobil 1. If the car is a high mileage car the high mileage has done well in my Camry, and I run the Mobil 1 synthetic in the Supra. 10-30 is what I use.

As for the two green outlets, I can't say I know which "outlets" you mean. There are two green-ish knock sensor connections over there, but I can't think of any outlets persay. I'll need a bit more info.

soc chaos · 09-17-2009, 07:43 PM

Ok yeah thats what I was first told but then someone said it was the other side. So I cant just take the us one off my old motor and throw it on there? And is there anything that hooks up to it? If that was not working right could it cause the motor to smoke? I am getting smoke from what looks like under the turbo. Its not too heavy and isnt there all the time when idling or reving at a stop. I dont think its something burning off like I did prior to me running it a mile or so because thats when I saw it the most. But for the mile I did run it man super responsive! That aluminum fly wheel really does help.

Jeeves · 09-18-2009, 11:00 AM

Quote:

Originally Posted by soc chaos

Ok yeah thats what I was first told but then someone said it was the other side. So I cant just take the us one off my old motor and throw it on there? And is there anything that hooks up to it? If that was not working right could it cause the motor to smoke? I am getting smoke from what looks like under the turbo. Its not too heavy and isnt there all the time when idling or reving at a stop. I dont think its something burning off like I did prior to me running it a mile or so because thats when I saw it the most. But for the mile I did run it man super responsive! That aluminum fly wheel really does help.

Nah, that's what you want to do. Reuse the one off your US motor. There should be a (if I remember right) single yellow wire, with a plastic housing that slides over the top of it. Looks different from most other connectors in that area. Smoke in that area, can't help you on. Look for leaks and such.
Sorry.