Supra injectors

Bigin1987

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Jul 1, 2011
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Midwest missouri
I was wanting to know where to find the part numbers on the injectors that came off my 7mge. and how to tell the difference between the high and low impedence(is there a color difference or something). And how can you tell if the injectors are bad(like the ohm resistance or what and what the factory ohm resistence should be).
 

Devin LeBlanc

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For a N/A 7MGE Low Impedance is Yellow, High Impedance is green.

For Turbo 7MGTE they are black and only came low impedance.

Checking the Ohm only tells you if the coil is in spec. You will need to remove them and send them to a cleaning company to be cleaned and flow tested. That is not causing your problem, if it was a bad injector it would have a misfire.
 

Bigin1987

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Jul 1, 2011
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well devin on may way to work last night i was sitting at the stop light and my car stalled out and died and i went to the gas station and while i was there (and at home earlier that day) i popped the hood to make sure all my hose clamps for the new line were still all good and i didnt have any gas leakage i could smell gas coming from under the hood. and when i started back up in the parking lot when it was idling at like 1100 rpm i noticed that it would drop down to 900-1000rpm. like it has a misfire. I posted this on my other thread but never got any replys back. and i kinda thought it made sense because of turning the fuel pressure to 40 and then when you go to give it gas it acted like it was being fuel starved and would die resulting me to turn it back up to 45 and it would run good just rich. i guess what i could do is take the intake mani and fuel rail off with the injectors still contected to and then try cranking it to see the injectors spray???? and if its not a cone than i know something is up. Would that work as far as a flow test?????
 

Devin LeBlanc

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No that wont work. How are you going to hold the 6 injectors in the fuel rail without the pressure blowing them out. I doubt its an injector problem lets just say that
 

bioskyline

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Oct 21, 2010
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powell river bc
not really no. that will show that they spray, if they dont go flying off the rail, its only a o ring and being trapped by the rail that holds them in place. ours arnt attached to the manifold, the injector sits in the head above the manifold.

a flow test is to see if they are indeed flowing the spec cc/min rate. (yellow is 295, the greens are 315 cc/min)

though if you do remove them, buy new injector orings, as there pretty much a one use only.
 

Bigin1987

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Jul 1, 2011
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Midwest missouri
well ive heard of people taking wire and strapping them securely to the fuel rail and then doing it. im running out of ideas and its getting me really aggravated as to what it could be. So whatever causing the sputtering, missing and stalling please help me figure it out.
 

Bigin1987

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Jul 1, 2011
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Midwest missouri
ok ill try and get that done tomorrow.

I noticed earlier today when i was looking at the motor and at the injectors that the clip that holds the injectors securely are broken. i mean the plug is still there just that little clip that you have to push to get it off of the injector is broken off and you can just pull them straight off of the injector. Do you guys think this would be what is causing my issues with the stalling, missing and choking and the eradic idling?

Like i said before when the car is set to 40 which is within spec from factory it acts like its not getting fuel and i had to turn it up to 45 to get it to run decent down the road. So maybe one of the plugs are disconnected or improperly connected and its causing one of or more injectors to not work properly. or it could be a combination of a bad injector and improper connections.

Just let me know guys, thanks.

---------- Post added at 11:33 PM ---------- Previous post was at 11:32 PM ----------

I will also be checking my plugs again to see if there are any color differences.
 

Bigin1987

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Jul 1, 2011
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Midwest missouri
Well here's an update. Sorry I didn't get the video yet but while the car was running yesterday I pulled the clips off the injectors one at a time and they all seem to be working. But I took a can of throttle body cleaner and sprayed around the injector while it was still running and when doing this I noticed the car bogged down only on certain injectors so I'm now know the injectors are good but I asked a mechanic and he told me it sounds like the o-rings are shot and that's why it bogs down when you spray around them!!!!!

Let me know if you guys think that sounds right.
 

Bigin1987

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Jul 1, 2011
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Midwest missouri
Ok. Back to square one. I fixed the o-rings and a couple of them were shot. The car runs smoother and better but it still has a stutter miss and acts like it's choking.

What now?
 

Bigin1987

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Jul 1, 2011
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Midwest missouri
I will definently get that tomorrow. I have to get this figured out cause it's drivin me nuts. I'm thinking it's the injectors messin up cause the injectors are for a 7mgte cause they are solid black. Maybe the injectors ARE shot or the throttle position sensor. The reason for me saying that is because when you hold it at steady idle anywhere above it regular idle you can hear a miss and when you get on it with WOT it cuts out at high rpm like it's not getting fuel but when you give it 3/4 or 1/2 it don't do it.

Maybe you all can figure it out before I get the video cause I'm tthinkin it one of the two or maybe both. Let me know guys?!?!?!?
 

bioskyline

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Oct 21, 2010
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powell river bc
7mge injectors
injectors001largetd5.jpg

7mgte
C3_1.jpg


if you got the 440, that might explain why its running rich....
 

hvyman

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Apr 17, 2007
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You should always start your diagnosis by check for codes. And not just going off whether the check engine light is on or not.