injector question

95CobraMike

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Apr 12, 2004

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Lima OH

Apr 24, 2006

#1

• Apr 24, 2006

• #1

I was wondering what voltange runs through an injector to make it..... inject...

also i was wondering if there is a good way to check to see if the injectors are working properly

thanks!

 

95CobraMike

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#2

• Apr 24, 2006

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1000 posts!!! yahoo!!!

 

S

slocomo

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Mar 19, 2006

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Apr 24, 2006

#3

• Apr 24, 2006

• #3

noid light set, it can be bought at advanced auto and probly autozone.

 

I

IEatRiceGT

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MD

Apr 24, 2006

#4

• Apr 24, 2006

• #4

95CobraMike said:

1000 posts!!! yahoo!!!

Click to expand...

congrats!

 

95CobraMike

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Lima OH

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#5

• Apr 24, 2006

• #5

what exactly does a noid light set do?

does it check ohms, or whether or not it is opening and closing or what does it do?

 

blksn955.o

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st.louis mo 314

Apr 24, 2006

#6

• Apr 24, 2006

• #6

a noid light plugs into the inj. harness at the inj. when the signal for the inj. to open goes to the inj. with the light it lights up.

 

95CobraMike

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#7

• Apr 24, 2006

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so it pretty much just tells me when it is opening, rather than if it is opening or not?

 

HISSIN50

"How long does it take to get help in here?

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Nov 29, 1999

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Apr 25, 2006

#8

• Apr 25, 2006

• #8

Yes, the noid light tells you if you are getting power and ground to the injector, but not what is going on with the actual fuel delivery. There is key-on voltage to the injector that is constant; the computer controls the ground signal to the injector to control pulsewidth.

A cylinder balance test is about the best test I can think of to measure the injector flow with the injectors in the car.

Good luck.

 

95CobraMike

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#9

• Apr 25, 2006

• #9

what if i take the injectors off the car? is there a way to test them to see if they are spraying like they should be?

 

blksn955.o

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#10

• Apr 25, 2006

• #10

Thats what the inj. ball. test is. A shop hookes them up and they can give alittle "tune up" kinda to them to flow ballance them and check for bad ones.

 

urban96

bubb rubb says:"woo woooooo"

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Apr 25, 2006

#11

• Apr 25, 2006

• #11

i think i read somewhere that someone used a lil 9V battery but that still wouldnt tell you if it was flowing the correct amount. just if it was working

 

95Vert

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Apr 25, 2006

#12

• Apr 25, 2006

• #12

I'm interested. I would like to take my inj(currently not installed) to the shop so they can check them out.

 

HISSIN50

"How long does it take to get help in here?

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#13

• Apr 25, 2006

• #13

BlkSn is right on. If one hunts around, the cost to have injectors cleaned and flow tested can be quite reasonable.

Good luck.

 

95CobraMike

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#14

• Apr 25, 2006

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what kind of shop does things like that?

 

blksn955.o

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#15

• Apr 25, 2006

• #15

call around, I have seen it done for free from buddies brother-in-laws, to 50$ all they way up to 100$...for flow ball. of all inj., sonic clean, and test them.

 

final5-0

Mustang Master

Apr 6, 2003

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DFW Texas

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#16

• Apr 25, 2006

• #16

Don't Laugh

I remember reading about some guy rig up a way to supply fuel and 12 volts to run them 10 seconds in a clear test container.

He then compared the spray pattern, and the amount of fuel in his test container for all eight inj's.

Now that I think about it, if you ran the test with oem pressure, I guess you could multiply the amount of fuel in the tank by 6 and it should be close the the inj's rating

Grady

 

HISSIN50

"How long does it take to get help in here?

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#17

• Apr 25, 2006

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Grady, I remember him. He dyno'd his camaro on an old Tractor trailer axle.

 

final5-0

Mustang Master

Apr 6, 2003

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#18

• Apr 25, 2006

• #18

HISSIN50 said:

Grady, I remember him. He dyno'd his camaro on an old Tractor trailer axle.

Click to expand...

Hey JT

It ain't nice of you to make fun of the cutting edge technology them Chevy boys are using these days

Grady