Misfire diagnosis using a new technique

[@SuperMarioDiagnostics]

Great video pj 👍 well explained and I love seeing other ways to get to the same conclusion. Keep them coming brother!

[@VoltageDropDiagnostics]

Thanks Mario! I think a SMD video is overdue!

[@SuperMarioDiagnostics]

Voltage Drop Diagnostics it sure is!

[@michaelmack2888]

Very cool PJ. Thanks for sharing.

[@VoltageDropDiagnostics]

Thanks buddy!

[@codysautodiagnosticsprogra8706]

Great work brother! That’s an awesome way to check mechanical workings or the injector. Obviously this would have been seen with an amp clamp, (since the control wire was corroded) but being able to “see” the drop is definitely a great approach as well.

[@VoltageDropDiagnostics]

I agree about current ramping! But for whatever reason, all I have been seeing is fuel injector issues lately hahaha! I had to switch it up.

[@codysautodiagnosticsprogra8706]

Voltage Drop Diagnostics great work bro

[@richardcranium5839]

really interesting way doing it. i would have probably went to the pcm or opened up a loom for the sync which would have shown the electrical problem. however i understand the intent of the video. makes one stop to think what and how else does a person use the tools at hand. great to see a company making an investment in their techs by supplying them the tools to do the job efficiently.

[@VoltageDropDiagnostics]

I agree about going to the pcm.Although there is a connector on the RF wheel well that I could have went to. But I'm in a toyota facebook page and kept seeing people say "what will I use this transducer for"

[@richardcranium5839]

@@VoltageDropDiagnostics i understand they just need to use their imaginations

[@Jedi_Masteren]

👍 You are very good to explaining things, thumbs up

[@8power0]

THANKS FOR THE VIDEO , AND GREAT TO SEE YOU STILL MAKING VIDEOS THANKS AGAIN !

[@VoltageDropDiagnostics]

Yeah, I dont get to make them as often as I'd like. But I don't plan on stopping yet! Thanks for watching!

[@ScienceOfDiagnostics]

Great job PJ. Very clear explanation and gives a great jumping off point to experiment more with this technique and figure out the variables based on the system design. I'm looking forward to more WPS usage videos 👍🏻

[@CubasAutomotive]

Most definitely Chris. May not be definitive using the pulse sensor solely, and I know some vehicles will be more definitive than others using the pulse sensor. I hoping through this video, we can discuss variables and when it's best to use it in this application.

[@VoltageDropDiagnostics]

Thanks for talking me in to posting the video!

[@ThePracticalMechanic]

Great tip PJ. It doesn’t take too long to get set up at all. It normally take me longer to find my probes because I’m unorganized. The WPS500x is a great tool with many uses.

[@VoltageDropDiagnostics]

I see a diag cart in your future! haha

[@markferraro5250]

great job PJ excellent use of scope and scan

[@VoltageDropDiagnostics]

Thank you!

[@CubasAutomotive]

Easy peezy.... great explanation Pj! Attenuator, BTW for those that don't know, protects the Pico/scope against too much voltage. The Pico is protected internally to only about 70vDC? Give or take. Might be 75VDC.

[@VoltageDropDiagnostics]

Thanks Cuba! And thanks for explaining the attenuator! I THINK this scope is good for 100 volts, but still. Injectors fire over 100 volts so it would still burn it up without an attenuator lol

[@ELEISONCARABALLO]

Actually Pico 4423 can manage 100 volts. The model 4425 can grab up to 200 volts.

[@duanedonaldson2262]

I can appreciate your video to help out new transducer users. This test is actually very old. make yourself up a shorter hose setup and try with a very short hose as possible and see the difference, there are pros and cons depending on the purpose of the test. Imagine older vehicles where the MAP sensor was mounted to the firewall and had a vacuum hose going to it, now MAP sensors are mounted directly to the manifold, this is the reasoning I am referring to with hose length and vacuum/pressure wave speed and smoothing/muffling/reverberating/feedback actions inside the hose of longer length. Thanks for the video.

[@OzMechanics]

Sweeeeet video. Another great tip

[@VoltageDropDiagnostics]

Thanks Oz!

[@michaelnicholson9092]

Great job PJ. I dont know why you are hesitant on producing the video. Your a well respected technician my friend. Even for a dealer tech. 😜😂 Playing.... Seriously though good job buddy.

[@VoltageDropDiagnostics]

Where is Cuba? Did she tell you to say that? haha

[@michaelnicholson9092]

@@VoltageDropDiagnostics nope. But my buddy down here at the Ford dealership was busting my balls for not sticking up for you on that last livestream we where at. He wont let me live it down. 😂

[@CubasAutomotive]

@@michaelnicholson9092 😂😂😂😂😂 yeah, no script needed @ Pj!

[@CubasAutomotive]

@@michaelnicholson9092 I totally LOVE our group! So much fun! So much geeking out! Couldn't ask for more. 😂😂😂

[@michaelnicholson9092]

@@CubasAutomotive you and I agree on that for sure. Never ever a dull moment. 🤣 I got the best networking team ever. 😎

[@OnlineMechanicTips]

Man, this good stuff..Similar styles

[@VoltageDropDiagnostics]

Thanks! I appreciate it!

[@awudubannaf8608]

Great videos 👍

[@VoltageDropDiagnostics]

Thanks!

[@flatratemaster]

great video PJ

[@VoltageDropDiagnostics]

Thanks FRM!

[@PineHollowAutoDiagnostics]

That was AWESOME! Very impressed that Toyota is equipping their technicians with such advanced tools like scopes and transducers. Truly a forward-thinking company :) Glad you mentioned the current-ramp test at the end. Wondering if the ECM set any injector circuit fault codes?

[@VoltageDropDiagnostics]

I was hoping to meet you in Staten Island a few weeks ago! But no, I've never seen a toyota set an injector code, which surprises me that even the newer models dont.

[@EverythingNausome]

I agree, I am a Kia Dealer tech in Canada. Our dealer training is useless and would love it if they implemented modern troubleshooting.

[@EverythingNausome]

@@VoltageDropDiagnostics Do you have a dealer tools p/n for it? I have a friend who works at our local dealer in Canada, curious if they got autoshipped it too. See if I can order one cheaper that way. Great videos!

[@VoltageDropDiagnostics]

@@EverythingNausome The part number for the kit that they sent the dealers is PIOKP355 Its about $1,050 for a medium size kit, which is a couple hundred bucks off the normal price I believe.

[@JustinDowDIYcentralhighway]

Ahh Rodent Damage... gotta love it. We get a lot of chewed wires. So customers are so regular it’s as if the Wild life was telling something. 🤣🤣🤣

[@mikeoneill7360]

You look like Pauley from Orange County Choppers.... Thanks for the video, that’s cool.....

[@VoltageDropDiagnostics]

You caught me! I’m really him 😂 thanks for watching

[@maldonadolemus]

I just have a question...Is it possible to clean the fuel injector without being removed with some fuel injector cleaner. Which would be a good brand to buy.? In case the problem are the injectors. I got no issues with fuel injectors so I just want to know if I can use some brand in particular that is going to work ok.

[@VoltageDropDiagnostics]

There are companies that sell fuel injector cleaners that you add to your fuel. A lot of people swear by BG 44k but i can’t comment on how well it does, or doesn’t work. I do know that i haven’t been able to clean an injector that already has low flow, to make it flow as good as new.

[@grabovg]

I have a couple questions for you. 1. Do you think the Diagon is worth it for a dealer tech with my own tech stream lite? 2. What do you suggest for terminal removal tools?

[@VoltageDropDiagnostics]

hmm. That's a tough question. Do most dealer techs need the diagun? Probably not. I do a lot of diag not just on toyotas, but also non toyotas. So I use it pretty regularly. Plus, it is wireless, so I use it over techstream anytime I am under the hood, or underneath the vehicle doing active tests with it. With that said. Is it "NEEDED" for a dealer tech? For most, no. As far as terminal removal tools. I honestly, usually just use a tiny T pin lol. So I don't have much experience with many on the market and I don't want to steer you towards a bad purchase.

[@johnsanchez1393]

Nice video, and great content greatly appreciated.

[@VoltageDropDiagnostics]

Thanks for watching! Im glad you enjoyed it.

[@kc360awareness]

Just rewatching some of your older content on a chilly Oklahoma winter day Thanks for putting up some solid content.... no fancy editing, no frills just solid technique boosting content Have a great day PJ

[@VoltageDropDiagnostics]

Awesome! Thank you!

[@greggregorich8048]

so now even toyotas misfire .wow so we have no reliable cars anymore, go carless bicycles win! win!

[@VoltageDropDiagnostics]

Happen to watch the end to see the cause? Lol

[@carlovincetti4538]

I think I took the wrong turn. This is above my pay grade:)

[@VoltageDropDiagnostics]

No! Hang around!

[@MiguelMartinez-np8uo]

Nice video and thank you for the new technique, I have a old Verus and it does have a scope but which scope do you recommend to buy a Pico perhaps?

[@VoltageDropDiagnostics]

I love the pico scope. Nothing really compares to it for automotive use. But id try the verus first, and see how well it works.

[@train4905]

Exellent demo sir

[@bbofca]

Looks like you are connecting the vacuum hose to the fuel pressure pulsation damper? Not the fuel pressure regulator.

[@VoltageDropDiagnostics]

Dampeners don’t have vacuum hoses in them.

[@tintoverano]

@@VoltageDropDiagnostics hi, is it called PCV or part of it? thanks

[@SAAutoRepair]

Oh boy oh boy. Nice job sir. Hopefully all the techs that have access to that wonderful tool take advantage of it. Thanks for taking the time

[@VoltageDropDiagnostics]

Hey, If they don't you might be able to find one cheap on ebay one day lol

[@jesselyons2002]

Wow that was a really great way of finding a injector thats not firing. Never seen that before

[@VoltageDropDiagnostics]

Its not the most accurate way. But I used this method to open up the eyes and show what a scope and transducer is capable of showing. Thanks for watching.

[@train4905]

Well done

[@TheDisgruntledMechanic]

Once again thanks for showing the hook up! that is very helpful. And I always love to see new techniques! Thanks!

[@VoltageDropDiagnostics]

Thanks TDM... I must say. you seem far more pleasant than disgruntled lol

[@TheDisgruntledMechanic]

@@VoltageDropDiagnostics Ha! you may be surprised if we ever meet!

[@VoltageDropDiagnostics]

Will you be at super Saturday? You’re in New York, right?

[@TheDisgruntledMechanic]

@@VoltageDropDiagnostics I am in PA. and yes I plan on being there

[@VoltageDropDiagnostics]

What part of PA?

[@jeremyanthony9300]

Awesome diag. Are you a Toyota technician? Where you from?

[@VoltageDropDiagnostics]

Yes, I’m a Toyota tech from PA.

[@jeremyanthony9300]

@@VoltageDropDiagnostics what part of pa

[@alanw5879]

I was just curious if this technique would work with fuel pressure damper on the rail, since the regulator is in the tank on some fords?

[@andrewk778]

Another great diagnostic video. Thank you for sharing.

[@VoltageDropDiagnostics]

Thanks Andrew! Thanks for watching!

[@cliffordhill9078]

that wire looks to me like the current load on that wire is too high. are you sure this isn't a case of a shorted injector coil? considering the work to get the intake off I would just replace the injector and not take the chance that there was a reason the wire look like that. I hope at the end of this video you showed testing the current ramp on that injector.

[@smms5056]

👍👍, what model launch is that?

[@VoltageDropDiagnostics]

Launch Diagun IX

[@frankyv5999]

Excellent.i haven't seen anyone using this technique in about 10 years.

[@jgeorges3061]

Mr PJ, Excellent/Brilliant approach and creative way to do this differently really enjoyed this one a lot thanks for sharing and keep at it please. cheeeeeers

[@VoltageDropDiagnostics]

Thanks for watching! I wasn’t sure how this video would be taken, so I’m glad everyone is enjoying it.

[@jgeorges3061]

@@VoltageDropDiagnostics yes the info really valuable to know one question how is about if u had a stuck or sticked injector or weak one will show too thank you.

[@VoltageDropDiagnostics]

Next time I have that issue, I’ll try it out. I’ve only used this technique on dead misfires so far. So i honestly can’t tell you how well it works on a low flow injector yet.

[@myvisioncash]

What is that scan tool called.

[@VoltageDropDiagnostics]

Bryan Ponce it’s called a launch diagun.

[@tracycolorado]

so do you take the chance of replacing / repairing the wire , but not replacing the injector ? - I would switch the injector with the wiring problem with an reachable known good injector , just in case

[@VoltageDropDiagnostics]

I actually didn't replace the injector. I hate swapping injectors though. For whatever reason, the O rings always tear for me when removing them, and we don't have them in stock. So the vehicle would have potentially ended up down for a day while waiting for a new o ring.

[@JoelAutomotiveInaction]

amp probe is better option i this case instead of swapping rah will definitely woll address the electrical portion.

[@PaulysAuto]

Now that is called thinking outside of the Box excellent video PJ!

[@VoltageDropDiagnostics]

Thanks Pauly!

[@weshawkins7165]

Just found your site, was on Eric O’s site and he mentioned you, good job with the diagnosis. I spent 8 years working in dealers and the last 31 working in my shop from my residence. I don’t see the volume of drivability work that requires the level of knowledge for the trouble shooting or the tools needed so these videos are a valuable resource for me. Thank you for doing them.

[@VoltageDropDiagnostics]

Wes Hawkins Eric is the best! Thanks for finding your way over here and watching!

[@daddyjay319]

Excellent video .

[@VoltageDropDiagnostics]

Thanks Jay!

[@ELEISONCARABALLO]

I used this technique in a Ford Mondeo fitted with a fuel pressure regulator installed in the fuel rail. Just plugged in a home made First look sensor to the vacuum hose and I can tell you guys that this technique is valid. Every time I unplugged an injector the waveform showed no activity for the correspondent injector. Thanks for sharing that.

[@VoltageDropDiagnostics]

Oh cool! I’m glad someone else has used this test with success! Thanks for watching!

[@thomasriske1594]

Pressure transducer

[@VoltageDropDiagnostics]

I love that tool!

[@biggysground]

Looks more like a rat mouse chewed the wiring bro, thanks for sharing.

[@CHIBA280CRV]

Awesome video thanks sir. I was thinking to purchase the x431 diagnostic tool you use versus maxidas tool can you tell me what you think ? Thanks

[@VoltageDropDiagnostics]

Hey Jogo. I really like the diagun, but I haven't used the maxidas myself. I believe Cody, at Cody's Auto Diagnostics might have both. I'd head over to his channel and see what he has to say. He will be able to give a more informed answer than me.

[@TheMeisterKang]

Thank you for the video it really helps me

[@mikejmardis]

If you forget shrink wrap, use liquid tape. I prefer it over shrink wrap

[@VoltageDropDiagnostics]

Man, I got trolled for using soldering instead of a crimp connector. I can't imagine the trolls if I did that lol.

[@mikejmardis]

I can’t imagine. But, with the weather seal shrink connectors, that have solder in it, you can’t go wrong.

[@Thunderroad8517]

Great video PJ . You should keep doing them. The content was thorough and different ways to diagnose faster is the best part. Good luck Sir. Tennessee Mike.

[@VoltageDropDiagnostics]

Haha “Tennessee Mike” that made me laugh! Thanks for watching.

[@JoelAutomotiveInaction]

very well done thanks for sharing

[@VoltageDropDiagnostics]

Thanks for watching!

[@BryanByTheSea]

Brilliant

[@VoltageDropDiagnostics]

Thanks!

[@kingbolen_official]

excellent Misfire diagnosis video,we like you PJ

[@VoltageDropDiagnostics]

Thank you!

[@stevebredemann331]

Great video sir. May I ask what tablet you’re using with your Pico?? Thanks again.

[@VoltageDropDiagnostics]

It’s a Panasonic toughbook CF-33 Thanks for watching!

[@albertsautodiagnosticsllc2130]

Please do more scope stuff

[@VoltageDropDiagnostics]

Albert I’m editing a video as we speak!

[@albertsautodiagnosticsllc2130]

@@VoltageDropDiagnostics haha perfect 👌

[@DylanRabier]

Great job PJ! You're spoiled with that WPS 😜 Guess I'll have to go work for a Toyota dealership 😉 Thanks for sharing 👍

[@VoltageDropDiagnostics]

I am spoiled from Toyota lol. But remember, i own my own WPS, so now I have two of them to play with 😏😏 I just need a true mechanical failure to get towed into the shop.

[@jeremyanthony9300]

What kind of car You working on?

[@VoltageDropDiagnostics]

A 4Runner. I forget the year. I believe a 2014

[@jeremyanthony9300]

@@VoltageDropDiagnostics was that the 3.5 v6

[@VoltageDropDiagnostics]

Jeremy Anthony no. That was a 4.0L

[@kirkabrahamson1148]

Once again great vid PJ. Even though we see similar content every contributor has their own style and approach to doing things. You explain things well mate. I see a future for you in training. Maybe you should have a catch up with Brandon Steckler and/or Paul Danner. Thanks for your time producing videos.

[@VoltageDropDiagnostics]

Man, I don't consider myself in the same league as those two guys, but I appreciate the comment! lol Paul is very local to me. and I consider Brandon a friend. I talk to him pretty regularly. Those 2 guys are the reason I do what I do now. Paul taught me the basics, and Brandon took those and expanded on them!

[@kirkabrahamson1148]

@@VoltageDropDiagnostics not a case of same league. Your style of presentation is both relaxed and thorough. You don't seem to be as nervous as in your first videos. I just feel with a bit of guidance from Paul and Brandon it is something you would do well at. And yes they are both amazing guys. Much respect them.

[@devinslurry365]

Great job. Fuck the tool box. Just show how to fix something. 5 stars!

[@VoltageDropDiagnostics]

haha! New video was posted today!

[@egpg7605]

Which scan tool are you using

[@VoltageDropDiagnostics]

ki ng it’s called a Launch Diagun. Here is a link to the one that I have. amzn.to/2P3hgFy

[@Russell_Duncan]

Interesting stuff. Thanks for sharing. I couldn’t help noticing that cylinder 6 did not have such an obvious dip on the waveform. Would you have any explanation for that? (P.S. I’m a subscriber now based on this video)

[@VoltageDropDiagnostics]

I hate that KZbin won’t allow pictures to be posted in the comments. Lol do you have Facebook? I can message you a screenshot of the waveform, circling what i seen.

[@Russell_Duncan]

Voltage Drop Diagnostics. That’s very kind of you. If you look me up by my name on Facebook, I’m the one that says Russell’s Garage under my name.

[@VoltageDropDiagnostics]

I sent you the message.

[@franciscodiez5825]

Another great video, thank you for sharing and putting in the time create a very insightful video.

[@VoltageDropDiagnostics]

Thank you!

[@Automotive_Solutions]

Thanks for a great video. WPS is on my wishlist. 👍

[@VoltageDropDiagnostics]

Its a great tool to have. And when you consider what a fuel pressure gauge costs, then an oil pressure gauge, then a compression gauge, all added together. It makes it FEEL like the wps isnt that expensive since it can do all of those tests by itself lol

[@Automotive_Solutions]

@@VoltageDropDiagnostics - I've got most of those gauges already 🥺. Still, its so versatile I'm going to get one.

[@simonsherwood7169]

Just found the channel.great stuff,keep it coming

[@VoltageDropDiagnostics]

Thanks Simon!

[@billrimmer5596]

That is very nice. Another way to skin the old misfire cat

[@VoltageDropDiagnostics]

Yeah. I just made the video trying to show that you don't always need to follow the same routine. Misfire. Swap coil, does the misfire move? That routine lol

[@seanfallo592]

And now you know...and knowing is half the battle 🍻

[@VoltageDropDiagnostics]

I agree! Thanks for watching!

[@ericheine2414]

Great video. Pressure transducer baby. Love it

[@VoltageDropDiagnostics]

Thanks Eric!

[@billyyoder8171]

Thank you Patrick. Good job. Have a blessed and safe week.

[@VoltageDropDiagnostics]

Thanks Billy! I hope you have a great week, too!

[@joachimjohan1215]

what about syl 6 inj? seems like a low drop?

[@VoltageDropDiagnostics]

I agree. My “theory” is that is the farthest cylinder from the fuel pressure regulator. So it effects the regulator the least. But that’s just my theory.

[@weldingjunkie]

Great video PJ I def need to get my hands on one of those I’ve been looking for a while.

[@VoltageDropDiagnostics]

Do you have a pulse sensor? That would have worked just as well for this.

[@yemiasaolu1622]

@@VoltageDropDiagnostics I can't afford WPS but will like you to recommend a not -expensive pulse sensor

[@VoltageDropDiagnostics]

@@yemiasaolu1622 I'd look into either getting a pulse sensor from Michael Nicholson, or Cody over at Cody's auto diagnostics

[@mansouralblooshi3004]

Great tip PJ. Thank you buddy

[@VoltageDropDiagnostics]

Thank you!

[@gertryberty586]

awsom

[@goodautodiagnosticsllc7475]

Good video and explanation PJ!

[@VoltageDropDiagnostics]

Thanks!

[@Inkd_watkins]

Great video !!

[@VoltageDropDiagnostics]

Thanks!

[@the1coolkidd]

Wish I could be your apprentice!

[@VoltageDropDiagnostics]

Where are you located? If youre close to Pittsburgh, I could make that happen lol

[@the1coolkidd]

Voltage Drop Diagnostics not close at all brother I’m in Tennessee :(

[@VoltageDropDiagnostics]

Are you currently working in the industry?

[@thatmechanicguy8773]

Mice!

[@VoltageDropDiagnostics]

Mice? Where are mice? Lol

[@angsdoordecorandmore9132]

💘

[@draildrums]

My hero haha

[@VoltageDropDiagnostics]

lol Thanks man.

[@bartscave]

Good job!

[@VoltageDropDiagnostics]

Thanks Bart

[@ovwok]

Nice!

[@VoltageDropDiagnostics]

Thanks Mark!

[@sonofmontezuma3732]

👍

[@VoltageDropDiagnostics]

Thanks!

[@sonofmontezuma3732]

@@VoltageDropDiagnostics truley an eye opener for those breaking into the biz. Some times these type of videos is all one needs to unlock a potentially powerful tool . It's just a matter of it clicking in our heads then it's down hill

[@PeterEndelt]

👍

[@VoltageDropDiagnostics]

Thanks!