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Old 04-17-2015, 12:48 PM   #1 (permalink)
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Default Need help identifying injectors!

I went through emissions and my car is running rich. I pulled out #1 plug and #3 plug and they were both wet with fuel. I did a pressure test of my fuel system and im pushing 35 psi when the car is running. My ignition system is brand new. Now the injectors I have on the car are three keihin and one IPT. The ipt injector has 4108 on it. the keihin injectors numbers are 49A= (the numbers are a little messed up so thats the best I could read it as), 5IEH and lastly 1GJB. I haven't been able to find these numbers I just want to know what cc's these bad boys are pushing.
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Old 04-17-2015, 12:54 PM   #2 (permalink)
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What car?
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Old 04-17-2015, 12:55 PM   #3 (permalink)
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Sorry I forgot to post that. It's a 93 civic ex with a d16z6.
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Old 04-17-2015, 01:23 PM   #4 (permalink)
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Stock injectors? With one replaced? What makes you think they are bigger? And should they be bigger. Did you buy the car modded? Dirty oem injectors can make the car run rich if they are just dripping fuel not spraying it.

Wait for highprofile he will be able to tell you.
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Old 04-17-2015, 01:33 PM   #5 (permalink)
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I'm trying to find if those are stock injectors. There is no mods to the car to my knowledge. Why I think they are bigger is because of the fact that my spark plugs are wet and I can't pass emissions.
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Old 04-17-2015, 02:24 PM   #6 (permalink)
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Dirty injectors wont atomize the fuel so it doesnt burn and gets tuings wet and shows runing rich. And that may have been why one was replaced if it stoped firing on that cylinder.
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Old 04-17-2015, 02:28 PM   #7 (permalink)
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But multiple spark plugs are soaked with fuel.
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Old 04-17-2015, 02:29 PM   #8 (permalink)
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I'm guessing that the injectors are different because of the two brands and none of the numbers on the injectors match up.
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Old 04-17-2015, 02:40 PM   #9 (permalink)
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I dont know if they are stock. I believe they are. And im saying if you have four injectors 3 the same one one different. What are the chances that they got gummed up and the car ran shitty so one was replaced then the car worked ok. But the other three injectors are still the old ones. So now two of them are not far behind the replaced one. And now you have one oem injector that will works from the original four..

Thats my though because the numbers are very similer to any oem dseries injector ive seen.
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Old 04-17-2015, 07:40 PM   #10 (permalink)
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The replaced one is on cylinder one. Why would they have different numbers on each one?
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Old 04-17-2015, 08:14 PM   #11 (permalink)
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What is the car failing for? High HC, CO, or a combination of the two? Or is it OBD2 and what codes is it failing for?

There are many things that would cause a car to run rich other than injectors. High CO readings are indicative of a rich condition and when it fails can give other clues (at cruise or idle). An ECT sensor reading wrong is a perfect example.

It is strange only two of the plugs are fuel soaked and not the others.

Can you post up a picture of the emissions sheet?
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Old 04-18-2015, 12:06 PM   #12 (permalink)
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It has 1.04 Nox out of 1.00 and co is 13.48 out of 12.00. I just got the timing set and the car runs great just running rich. And it's all obd1.
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Old 04-18-2015, 12:07 PM   #13 (permalink)
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I only pulled those two plugs just to check them. And when I get my hands on the sheet I'll put a picture of it up.
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Old 04-18-2015, 05:03 PM   #14 (permalink)
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When is it failing? At cruise or idle?
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Old 04-19-2015, 04:09 AM   #15 (permalink)
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Its only cruise. Here in az they don't test the idle just stick it on the rollers and run it.
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Old 04-20-2015, 06:27 PM   #16 (permalink)
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The injectors were over sized. I put some stock injectors I got from the junk yard and it passed emissions. Nox went to .70 and co went to 5.64.
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Old 04-20-2015, 06:51 PM   #17 (permalink)
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Cool. Glad you got it figured out.
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