Autel questions and replaced Spark Plugs getting Low Count Misfires on random cylinders.

[texasyukonfl]

Replaced the spark plugs in my 2018 Yukon XL, 101k miles. After replacing them I pulled up the live data misfire counter and I was getting random misfires in small numbers, no more than 1 or 2, on almost every cylinder. No check engine light or anything and the total misfire counter was typically 0. Not sure what the issue is, the engine is running smoother than it previously was. Do I have to worry about counts this low?

My other question revolves around my new Autel MaxiCOM MK808BT Pro scanner. The thing is really nice... but I have no idea how to use it other than basic scan functions. Does anyone have a resource they used to learn more about the scanner and its functions, especially the bidirectional aspect of it? Looking to learn more.

 

[Joseph Garcia]

Replaced the spark plugs in my 2018 Yukon XL, 101k miles. After replacing them I pulled up the live data misfire counter and I was getting random misfires in small numbers, no more than 1 or 2, on almost every cylinder. No check engine light or anything and the total misfire counter was typically 0. Not sure what the issue is, the engine is running smoother than it previously was. Do I have to worry about counts this low?

My other question revolves around my new Autel MaxiCOM MK808BT Pro scanner. The thing is really nice... but I have no idea how to use it other than basic scan functions. Does anyone have a resource they used to learn more about the scanner and its functions, especially the bidirectional aspect of it? Looking to learn more.

You might want to run some Techron Complete Fuel System Cleaner in your gas tank for a few fill-ups. Then, check for misfires again, and see if anything changes.

Regarding Autel scanner training content, I've used a number of YouTube videos to begin to learn how to use the scanner. I'm still new to that scanner, as I typically use my Tech 2 on the truck.

 

[texasyukonfl]

Will do on the techron.

I have been scanning youtube as well. No one has really stood out as a good place to learn but I have been piecing some learning together. If you ever find a reliable source would be great to hear about it. Thank you for the response.

 

[Doubeleive]

The k2's are known to have injectors that fail, some have a special 10 year extra coverage, might be something to check out

 

[Fless]

About learning the tool, I would just plug it in and start picking around. If you go to the vehicle-specific part (not generic OBD) there's a lot of things to look at. Pick the Powertrain section, for instance, and look at all the Live Data PIDs that can be viewed.

Just be sure to have it running or on a battery tender if you'll be doing it for long. Don't need to drain the battery just navigating the system.