Misfire Diagnosis

[Gotch]

Mine is in today for injector replacement and valve lash adjustment. Out of pocket for me...?

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[das borgen]

Mine is in today for injector replacement and valve lash adjustment. Out of pocket for me...?

STOP THEM ASAP. Try the Honda dealer dude. It's not rocket surgery

 

[Gotch]

STOP THEM ASAP. Try the Honda dealer dude. It's not rocket surgery

It’s at the dealer....I’m not OP, just another member with misfire issues.

 

[das borgen]

It’s at the dealer....I’m not OP, just another member with misfire issues.

My bad. I'm sorry, lol

 

[Gotch]

I’ll make a new thread with my issues and pics after I get my car back.

 

[Gotch]

New injectors fixed my misfire in cyl 3. Still need to hook up my scan tool to see where STFT and LTFT are at. Throttle response is way better and top end as well.

Old injectors...carbon fouled nozzles

 

[kshawn]

New injectors fixed my misfire in cyl 3. Still need to hook up my scan tool to see where STFT and LTFT are at. Throttle response is way better and top end as well.

Old injectors...carbon fouled nozzles

This was my cylinder 3 injector

 

[Gotch]

Here’s my spark plugs for reference. 80k kms and in amazing condition.

 

[Gotch]

This was my cylinder 3 injector

Looks better than mine! No codes for me.

 

[CrisSi]

UPDATE: Bought the car to Honda today and was told they were gonna replace the injectors under warranty. I will continue to keep everyone updated and see if this actually fixes the problem

 

[CrisSi]

UPDATE: Bought the car to Honda today and was told they were gonna replace the injectors under warranty. I will continue to keep everyone updated and see if this actually fixes the problem

Got my car back today, so far everything seems normal. Unfortunately I didn’t ask to keep the old injectors so I couldn’t see how bad the build up was.

 

[Gotch]

Got my car back today, so far everything seems normal. Unfortunately I didn’t ask to keep the old injectors so I couldn’t see how bad the build up was.

If warranty, you would not have been able to get them. They are returned to the supplier for counter measures (if applicable).

Too bad they didn't take pics for you.

 

[Sam73079]

Go to the Honda dealer! Stop dealing with the 3rd party warranty people. Why would you send your car to a non-Honda dealer too?

The warranty on the powertain is 6 years and no mile limit and your car falls squarely under those limits. It was extended a year ago due to the oil dilution problems on the 1.5T

https://www.consumerreports.org/car...a-extends-warranty-on-troubled-turbo-engines/

I also have a 2018 EXT 1.5 L turbo at Honda said that mine isn’t covered no recall I’m confused also having the PO 303 code basically pulling my hair out now have change plugs nothing

 

[Addicted2Boost]

Adding to the thread I had the same issues regarding misfires on cold starts. Can concur after taking it to the dealer it was indeed a faulty fuel injector and they ended up changing the entire assembly under warranty. Only mod was Ktuner V2 on TSP1. 17 SI with 23k miles.

 

[skottharrison]

Adding to the thread I had the same issues regarding misfires on cold starts. Can concur after taking it to the dealer it was indeed a faulty fuel injector and they ended up changing the entire assembly under warranty. Only mod was Ktuner V2 on TSP1. 17 SI with 23k miles.

Did they give you any headache over the tune or did you flash back to stock?
Thanks,

EDIT: I understand am okay with my motor and turbo's warranty "Poofed" away with a tune, but has anyone heard of injectors, motor mounts, axles, trans gears (not clutch) etc.. being denied because of a tune?

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