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Misfire in cylinder three?

Tiny
BLESSING EWOBOR
  • MEMBER
  • 2013 TOYOTA HIGHLANDER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 239,866 MILES
Hello,

The vehicle had a burnt gasket, the gasket was replaced but it had misfire in cylinder three according to the scanner, it was checked and confirmed because the plug was soaked with fuel. The spark plugs and coil has been replaced but it seems to be the same. The coil is not to fire well. Please could you help me with the Engine Performance Circuit diagram?
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Friday, March 3rd, 2023 AT 7:40 PM

16 Replies

Tiny
KEN L
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Sure, will do, but I need to ask does the cylinder have compression and if so, it could be the fuel injectors tuck on soaking the spark plug down. here is a guide that can help, and I have included the engine wiring diagrams in the images below so you can see how the system works and which wires to test.

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

Check out the images (below). Please let us know what you find.
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Saturday, March 4th, 2023 AT 9:25 AM
Tiny
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Thank you very much,
I loosened the air intake manifold and found Engine oil inside of it. Is there any way for someone to test or know if the injectors are kept open?
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Saturday, March 4th, 2023 AT 6:26 PM
Tiny
KEN L
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Yep, here is the test but the injector needs ro be removed first.

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

Let me know what happens.

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Sunday, March 5th, 2023 AT 5:52 PM
Tiny
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Thank you very much sir, I have gone through the article but none of them indicate a injector that is stuck open.
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Sunday, March 5th, 2023 AT 11:57 PM
Tiny
KEN L
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Did you remove the injector for testing?
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Monday, March 6th, 2023 AT 12:20 PM
Tiny
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Yes, I removed the injectors for testing, they were all spraying well. Which indicates that the problem is not from the injectors.
Is there any other ways to test the spark plugs apart from removing it from the cylinder and checking for spark.
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Monday, March 6th, 2023 AT 7:23 PM
Tiny
KEN L
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Did you do a compression test using the guide above?

Here is a video to help you test for spark:

https://youtu.be/baq_aEWNQ0Y

Please let us know what you find.

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Wednesday, March 8th, 2023 AT 9:56 AM
Tiny
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Hello,
Thank you very much, there is a good spark from the ignition coil which means that the ignition coil is work well.
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Wednesday, March 8th, 2023 AT 4:46 PM
Tiny
KEN L
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Okay, then it will be compression or a bad spark plug, please follow the guide above.
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Thursday, March 9th, 2023 AT 2:21 PM
Tiny
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Okay sir, but I don't have compression test kit for now.
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Thursday, March 9th, 2023 AT 6:52 PM
Tiny
KEN L
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You can rent one from an auto parts store for cheap or free.
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Friday, March 10th, 2023 AT 3:09 PM
Tiny
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Good morning,

I can't find any store around that has the guage. The coils and spark plugs are in good condition. I said earlier that there is excess engine oil in the air intake manifold.
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Friday, March 10th, 2023 AT 11:36 PM
Tiny
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  • 2013 TOYOTA HIGHLANDER
  • V6
  • 2WD
  • AUTOMATIC
  • 234,324 MILES
Good morning, sir, the vehicle had a blown head gasket, which was replaced, and the vehicle performed very well for the first 30 minutes on idle speed, then it stripped off by itself without knowing the cause of it. The engine was cranked, and it started running but tripped off again. As this time, the engine refuses to start, it will crank slowly as if it has low battery. The vehicle was scanned, and the code found was P1604. The starter is in good condition.
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Sunday, March 12th, 2023 AT 7:01 PM (Merged)
Tiny
KEN L
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It sounds like the ground was not connected from the battery to the engine block, can you please confirm the ground is working? connoted and in good shape? Please check the images below for the diagram of the negative battery cable. Also, you can try to remove all of the spark plugs to see if the engine cranks the same and if not recheck the positive connections as well and then replace the defective starter.

Please check out these guides:

https://www.2carpros.com/articles/7-common-symptoms-of-a-bad-automotive-starter

and

https://www.2carpros.com/articles/how-to-replace-a-starter-motor

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.
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Sunday, March 12th, 2023 AT 7:01 PM (Merged)
Tiny
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The ground and the power are well connected. There is no voltage drop on from the battery negative to the vehicle chassis.
The starter motor is in good condition.
Removing the spark plugs and cranking the engine will be for what test?
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Sunday, March 12th, 2023 AT 7:01 PM (Merged)
Tiny
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Whenever the vehicle start button is pressed, the engine cranks slowly before it stops and someone will be perceiving something burnt from the starter motor.
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Sunday, March 12th, 2023 AT 7:01 PM (Merged)

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