Special Function: Cylinder Power Balance Test on GMC V8 with XTOOL Scanner

This video demonstrates how to use the XTOOL D7 scanner to turn off each cylinder one-by-one and monitor live data to determine if any cylinders are not contributing to the running of the engine. This test is very handy when trying to identify the source of a misfire or rough idle. The test vehicle was a 2006 GMC Sierra with 5.3L V8 but the steps are the same for most other vehicles
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[@asocialconsciousness8535]

looking forward to seeing more xtool videos! This tool offers a ton of features and the more i familiar myself with the better i can use this tool ;)

[@McAdamsMechanics]

Servicing a rough idle and rough drive car yesterday. Fault on injector 1 was on and the power balance showed cylinder 1 was stealing from cylinder 4. Quite intense!

[@terrellwright7565]

Thanks for the video.. We have an Equinox and the XTOOL works great with it.

[@arnoldwilson3719]

first and foremost thanks for making this video I too was thinking of showing special features of my scan tool so the people could see what they can do. i have a launch x431 pro3s+ and it has less submodels of cars to go through due to vin id but that does not make it the end all be all as i said before showing these slecial functions on different cars with different tools can help consumers get the scan tool that best for them. as different tools cant access the same functions keep those videos coming.

[@ronanconnolly2196]

Great video. Keep em coming! Thanks

[@aryezzadin934]

Great job, I hope you will continue to post more information on xtool scanners

[@mrdiyguy123]

More to come!

[@TurnThemWheels]

Good video , I recently got X Tool D8BT

[@BigZaddy2112]

I just received my D7…I look forward to when you work on a Ram Promaster 2500 cargo van with a 62TE transmission and Pentastar 3.6L V6. I’m figuring out the benefits of this scanner with my van. Thanks

[@bazoguilherme803]

Good

[@jimmybeeler8277]

My question is does it go by firing order as far as identifying the correct cylinder.

[@mrdiyguy123]

No my assumption is it would go by the numbering of the cylinders not by firing order.

[@22mrwright]

Hey, can this d7 tool do injector balance test do you know?

[@iam1smiley1]

I wished you would've shown more....my understanding was this was originally an option for Ford scan tools, as a way of getting the engine to turn off fuel and basically do a relative compression test, so you can see how the rest of the cylinders compare or "balance" to each other????

[@mrdiyguy123]

I explained what cylinder Power Balance test is and how to conduct the test and how to watch for the results by noticing a drop in RPM. What more were you looking for? I'm not sure there's any more to a cylinder Power Balance test then what I accurately described in the video.

[@yt7519]

Thanks for sharing all your progress with this scan tool! Quick question: Can you individually shut off each injector and coil pack?

[@mrdiyguy123]

Hi there. The cylinder balance test shuts off either the coil or injector or both. I am not sure which. I have not found a test that is labelled injector or coil test sorry.

[@arnoldwilson3719]

can you view the live data for both that would help maybe.

[@Rhodeislander]

Ok, what does balance test mean? I can pull a plug boot to kill cylinder, balance should mean some type of comparison of fuel or spark?

[@jimmybeeler8277]

It will only tell you the hole that is dead. you have to find out why its that way. It keeps you from knocking the crap out of yourself by pulling plug wires.

[@MegaWatching]

​@@jimmybeeler8277😂

[@WV591]

Too bad xtool D7 and D8 don't have the fuel trim reset service function that D9 has

[@SilvexPhoto]

Yes they do. Maybe needs an update?

[@johnyM128]

On what car brands i canuse this špeciál function?

[@mrdiyguy123]

You would have to consult Xtools support page to see the supported vehicle list. In a short answer "most"

[@johnyM128]

@@mrdiyguy123 please, is there function - when you change fuel filter - thank its good to run fuel pump. Does a30m have this functionality?

[@mrdiyguy123]

@@johnyM128 Are you saying it's good to run the fuel pump before trying to start the vehicle? If so I would not Have thought to do That But it is an interesting idea. If The fuel pump is controlled by the vehicle's computer then yes the scan tool could trigger it

[@johnyM128]

@@mrdiyguy123 for commonrail its important after fuel filter to get away Air from system. IF there is Air it could damage high pressure fuel pump. With vcds i can activate fuel pump. On a30m iam not súre maybe with active test...

[@mrdiyguy123]

@@johnyM128 Thank you for the lesson. Can you Not just cycle the key a few times?

[@rickybobby1681]

Subscribed! ty

[@curlymyhero]

So far my Xtool doesn't like Mercedes and didn't pay them for rights. Thus hardly any functionality