This New Tool Will Make Diagnosing GDI Fuel Injectors Much Easier!!

You are saying non broken car , but correct me if I’m wrong , the ECM has an allowable variation in numbers before it sets a code. Like 10 or 15 % of set values.

Great video I own one it’s definitely a little overwhelming at first.

Crank acceleration rather than speed is the physics term your searching for. Excellent video on how a multichannel scope is invaluable.

You don’t need this you can use signal wire to diagnose. You can use math channel in pico for crank speed. All this tool does is amplifying it.

Ingenious tool design. But how much difference between GDI injectors is acceptable? What is typical? I would think there can't be a perfect match between injectors. And a replacement might have the same variation?

To make heads and tails of this I'd love to see you guys redo this test with an in-cylinder along with current of all the injectors, an injector sync, and the ADDi on the FP Sensor. Because on GDI it should fire the injector alot closer to TDC comp than a port injector. That way you can more accurately determine which drop correlates. It almost appears as though a whole bank contributes slightly less.

Can't wait to see it on a dead miss. !
Great tool for sure. ❤

Great video you are making real changes you are helping others its wonderful. wish i were younger all the great tools are coming at the end of my mechanical life but still very useful information thanks so much for the time and effort you go to helping others

It would have been interesting to see if pre (AFR) and post O2 showed any indication of slight misfire activity or profile of spark line via paddle probe compared to ADDI. Always nice to have another tool in our arsenal. Thank you for posting Sherwood!

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It doesn’t make it easier than just buying a 1990’s Toyota with port injection. Or 2022 cast iron 2tr-fe from Japan. All these new designs are complicated crap.

thank you, very well explained

Question is there a way to tell if a high pressure pump sensor is off (skewed) and what pressure is actually at the high pressure rail

Oscilloscopes have a place in the auto repair shop, mostly to keep the tech from having to do disassembly in order to test the bad part. Scopes are for warranty work, if you're just gonna replace the bad part, reality is if one coil or fuel injector is bad, we pitch them all, and note when the customer just wants the bad on replaced.

The tool that manufacturers use is called afit. Replaces the vehicles ecm and cranks for each injector and watches leak down using the pressure sensor. Been around for years

interesting look forwards for more videos on this tool!

Super cool tool. Have to say it, anyone only doing one injector on a vw deserves a come back lol

You know thats great... but if you are using an 8 bit oscilloscope that waveform will still look like Steve from Minecraft built your waveform. You can filter out all you want, but if your monitor is a 256bit monitor you are gonna be playing a lot of retro games.... all I am saying...

My hyundai is at the shop now they thought it was the fuel rail pressure sensor and its not so this tool would come in handy about now

Looks like a tool that will be very useful if you can prove the drop in pressure or lack of drop in pressure is due to the faulty injector and not the ecm changing the injector pulse width as well as making sure you have correlated the correct injector with the correct drop. Im excited to see where it goes and congrats to Scott for being innovative and helping to solve a problem in the automotive world. As techs we battle so many problems every day!

YOU ARE A GREAT GREAT MAN ❤❤❤❤❤❤

Nice

Neat tool and scope captures! Looking forward to seeing the ADDI in action on some known BAD cars to diagnose GDI problems 😊
Merry Christmas!

You can definitely test gdi injectors with an injector machine. I do it frequently. But something like this would definitely be nice before pulling the injector rail

will cover your butt with this tool by informing there will be a problem with x y and z in the future pay me now or pay me later

With Fuel pumps disintegrating plugging up injectors at 1,000s of dollars to repair; sloppy signals on known good systems indicates more than design flaws! It's junk on the drawing board, it's junk when it's new with Lousy mileage and poor fuel economy and after a few years it's going to die a horrible expensive death or cost you $$$ often enough to make it's design obsolete in just a few years. FORD QED sell more Trucks.

Scott's probably aware of this but I doubt it'll be long before someone copies this box.
A friend was in a similar situation over here in UK, when he made a much more compact tool design than anyone else had. He'd added a hidden, redundant circuit into his design and all the copies had that, proving they'd stolen it. He easily won every court case when he asked thier expert what that bit did.

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Sherwood, thanks so much for passing on this and all the other great diagnostic information. I will be watching for some additional reps with this tool. I think it will be like all the other pressure / pulse based diagnostics we do; we going to need to see lots of known good next to known bads, before we can be fully confident . Thanks again for you very good work.

If the existing PCM was tweeked by the manufacturer of the vehicle to be more sensitive, especially around cylinder specific misfires , and if the existing fuel rail pressure sensor was used and corrolated , then it would seem that future on board diagnostics could do the same thing. Next level PCMs and their self diagnostics might make a tool like this obsolete . Too much detail and information could become a problem itself. If you jumped from the 2nd floor hay loft into a bale of hay, and this tool found a needle in that bale of hay, that does not prove the needle was the root cause of your broken leg as the result of your fall.

Thank you for sharing this valuable information . I will definitely look into this tool. Happy holidays by the way

If there’s a pressure sensor in the high pressure rail sending a signal to the PCM then shouldn’t we be able to access that data with a scan tool? If not, why not?

We bought one 3 or 4 months ago, 3weeks ago we were having a problem analyzing a signal on late model 6.6 Duramax. Called Scott drove up to our dealership from Missouri to south Chicagoland and spent the day with us. Great guy and good tool!

Tool is very useful. Scott came out to get some samples on a 2024 Duramax with a fuel delivery concern. Hes very knowledgeable and cant beat his customer support!

I really fail to see the usefullness of this tool when a Picoscope using a derivative math channel of the FRP sensor will show you the exact same thing so long as it is not a SENT type, digital requires an extra step. Maybe ask Bernie to add some usefull Math to his scope, then it truly would be the best.

This is super awesome, their from my neck of the woods!

Does anyone understand why can’t you see the injector pressures on a scan tool?

Tool is awesome, I definitely need more practice with it though because I’m having a hard time distinguishing between the events. What I’ve been doing to determine faulty fuel injectors is checking for lean misfires with the ECOPS at idle and WOT, and then performing an in-cylinder to verify integrity of the suspected cylinder.

I've had luck diagnosing faulty GDI injectors by using an oscilloscope to monitor injector pulse waveform

I really hope he is getting a Patton on this tool??? Because after this video there are going to be people out there trying to make one of these and beat him to the Patton Office…

Can I rent one lol

Powerful ! SMART !!

Great looking tool, I gotta get one. Santa if your listening.......
Question on the scope, around 5.50 mark you separated the green trace, I noticed the scale on the left side is fixed. If needed, how can you accurately and quickly measure a signal after its separated when the scale doesn't move?

If you are using the Escope can't you just use the multiplier on that channel to increase the signal?

I own serial number 1 of the addi. I have believed in scott since day one and watched this tool grow from the ground up. I am so glad that hes finally getting the air time he deserves for this tool.

Can you please post a link for that flash light/knife holster that you wear on your belt, I would like to get one of those. Thanks and keep up the good work.

Does it work on a regular (gasoline) injector? It would be a huge help as well.

Does this work with sent sensor and piezoelectric injectors???

Doesn't a Noid light help diagnose fuel injectors?🤔

Been dying for the Addi since I saw it in action in marios channel a while back. Ive told lots of guys about it but the price seems to kill it for them. Pricy but priceless in the arsenal of the diag cart.