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Injector not working

Tiny
PAT.2
  • MEMBER
  • 2007 KIA SPORTAGE
  • 0.6L
  • 4 CYL
  • 4WD
  • MANUAL
  • 187,916 MILES
My injector number two not working. I have changed it but still same issue.
Friday, December 28th, 2018 AT 6:01 AM

36 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon.

Did you verify power to the injector. with the key on, remove the connector and test for voltage at the connector.

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

the other wire goes to the pcm. that controls turning the injector on and off by grounding that wire. A tool called a noid light can confirm if it is doing its job. you can get one at the parts store.

Roy
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Friday, December 28th, 2018 AT 11:44 AM
Tiny
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I had done that and even swapped the number one injector to number two, but still the same. I had changed the cylinder head valves at that side but still same issue.
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Friday, December 28th, 2018 AT 11:57 PM
Tiny
ASEMASTER6371
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Have already done what?

What were the results? Did you have voltage? Did the noid light flash with the engine running?

Need specific information to help you.

Roy
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Saturday, December 29th, 2018 AT 5:00 AM
Tiny
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Yeah the noid light flash please.
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Saturday, December 29th, 2018 AT 5:09 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Then the injector is working.

What is the original issue that made you think the injector was bad?

Roy
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Saturday, December 29th, 2018 AT 5:18 AM
Tiny
PAT.2
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  • 25 POSTS
I think misfire can cause this.
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Saturday, December 29th, 2018 AT 6:47 AM
Tiny
ASEMASTER6371
  • MECHANIC
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Yes, there is a lot more to a misfire than the injector.

you need to check compression in the cylinder, check for vacuum leaks and also check the ignition parts such as coil and plug.

https://www.2carpros.com/articles/how-to-test-engine-compression

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Roy
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Saturday, December 29th, 2018 AT 6:51 AM
Tiny
PAT.2
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  • 25 POSTS
Have checked vacuum leaks, coil and plug as well. I think there is damaged cylinder in that side.
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Saturday, December 29th, 2018 AT 7:35 AM
Tiny
ASEMASTER6371
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Yep, the compression?

Roy
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Saturday, December 29th, 2018 AT 7:41 AM
Tiny
PAT.2
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Why don't give me your phone number or your whatsApp number so that we talk directly.
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Saturday, December 29th, 2018 AT 8:02 AM
Tiny
RENEE L
  • ADMIN
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Hello, sorry our experts do not give out there private contact information. Please keep responding to this thread as it may help others as well.

Thank you,

Renee
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Sunday, December 30th, 2018 AT 6:53 PM
Tiny
PAT.2
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Okay thanks. I think is misfire that causing this so I am going to remove the cylinder head and base pan to check the piston rings and see.
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Sunday, December 30th, 2018 AT 11:35 PM
Tiny
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I would do a compression test first to be sure it is an internal issue.

Roy
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Monday, December 31st, 2018 AT 3:56 AM
Tiny
PAT.2
  • MEMBER
  • 25 POSTS
For now I have done everything on that car but still injector 2 not function. When you removed coil wire on the plug while the engine is running you can see the engine is shaking unless you insert the plug wire on the plug, but the number 2 didn't shake.
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Friday, January 4th, 2019 AT 1:02 PM
Tiny
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You need to do a compression test as I suggested two times.

Roy
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Friday, January 4th, 2019 AT 1:05 PM
Tiny
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What's mean by compression?
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Friday, January 4th, 2019 AT 1:53 PM
Tiny
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The cylinder builds compression for the fuel/air mixture and when spark happens the mixture blows up and forces the piston down.

Roy
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Friday, January 4th, 2019 AT 1:55 PM
Tiny
PAT.2
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We have changed all the piston rings too.
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Friday, January 4th, 2019 AT 2:00 PM
Tiny
ASEMASTER6371
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No, that is not it. Compression check the valves and the head gasket as well.

You should take this to someone to do this test for you since you have no idea of what it does and how to check it.

Roy
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Friday, January 4th, 2019 AT 2:04 PM
Tiny
PAT.2
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Have already done all, have checked the valves and there was no leakage and I had changed the head gasket as well.
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Friday, January 4th, 2019 AT 2:11 PM

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