Injector Identification needed

[Young1]

Plenum is off and neither Marc's site nor Stickies indicates. Please identify what I have installed. They all check out ohm wise.

Green band installed in secondary
3226 5235366

Red band installed in primary
2203 5235357

First owner did replace originals but could not tell me with what. Probably work was fine st a dealership. Could these be 93-95 MY injectors?

[Ccmano]

Can you post a photo?
H

[Ccmano]

From the numbers they are Rochester MPI injectors that are original equipment on the 90-92 engines. You can find them listed here...
http://teamzr1.com/injector.htm
H

[Young1]

Does that mean that these will fail because of alcohol? Or were these part numbers upgraded to resistant materials?


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[secondchance]

Originally Posted by Young1

Does that mean that these will fail because of alcohol? Or were these part numbers upgraded to resistant materials?


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Others may disagree but I have a 94 and it’s injectors failed way back when. Was it alcohol? I don’t know.

[Young1]

I am trying to track down the slight knock and slight rough idle. The injectors check out with ohms and so do the coils. I am replacing the coil's since they are originals.


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[Ccmano]

Originally Posted by Young1

I am trying to track down the slight knock and slight rough idle. The injectors check out with ohms and so do the coils. I am replacing the coil's since they are originals.


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Ohms is only half the Issue. Spray pattern is the other. Check for a local place that can check the flow. Problem is it gets a little pricy to have them checked. $10 to 20 per injector is not unusual. It’s almost worth it to just replace the injectors. Accels and FIC’s are $600 -700 a set of 16. While your at it Ohm out the wires, replace the plugs and do a compression test. At sea level compression should be ~200-215 psi.
H

[XfireZ51]

Well as we realized during my own recent check of injectors, Marc Haibeck will flow test injectors for $100. And the shop I used also charged $99 for flow testing and inspecting all 16 injectors. In my case, it turned out to be well worth the money ultimately leading me to replace all of them w FICs.