Need help on a 2007 Chevy Tahoe fuel injector replacement

[JTsYUKON]

Got the spark plugs installed. Plug 8 was a bear. I think I found out why I had a misfire on 1.

Here’s all 8

Haven’t taken it for a spin yet, but the idle seems substantially smoother and it ran for awhile and didn’t throw any codes. I hope this solves it. Thank you so far for help.

 

[swathdiver]

...there is no code for injector failure that I'm aware of on any of the obs, nbs, nnbs suvs.

I show at least 4 DTCs for each injector for GMT900s. P0201-P0208, P029D-P02B9, P1224-P1247, P268A-P2693

 

[swathdiver]

View attachment 241448

Yikes! Now where's that piece that broke off?

 

[89Suburban]

Yikes! Now where's that piece that broke off?

Probably stuck in one of the cats LOL.

 

[JTsYUKON]

Yikes! Now where's that piece that broke off?

I wondered the same thing. I used an air compressor to blow it out, but nothing else I know to do To find or remove it.

 

[OR VietVet]

That was your misfire for sure. Basic maintenance wins again.

 

[ivin74]

I show at least 4 DTCs for each injector for GMT900s. P0201-P0208, P029D-P02B9, P1224-P1247, P268A-P2693

I learn something new everyday.

That was your misfire for sure. Basic maintenance wins again.

X2

 

[JTsYUKON]

I think we have a fix. Basic maintenance for sure. Much appreciated.

 

[wjburken]

I think we have a fix. Basic maintenance for sure. Much appreciated.

Thank you for sharing what it was that fixed your issue.

This is a perfect example where getting a DTC code is simply the first step in solving the problem as it only shows the symptom that the vehicle is seeing. AutoZone is very good at helping people see what codes are causing their Check Engine Light to come on and what some “common causes” might be, but they don’t always do a very good job of stepping people through the process of seeing what is actually the cause is and what part or parts are bad. The code is simply one clue and helps point you in a general direction, but basic diagnostic methods will be what finds the actual cause.

in this case it went from thinking a new injector was needed to finding out it was simply a bad spark plug.

 

[donjetman]

What caused the damage to the spark plug?? There is nothing normal about it. Detonation could do that, but I've only seen that happen, on high hp racing nitrous or blower engines when they got too lean.