Toyota Truck V6 Misfire Case Study P0302 

That video is one of the finest examples of an automotive repair and tutorial video ive seen. You are professional cover all details. I learned so much .I have 98 4runner 3.4L same error code. Man I'm lucky to have the same exact problem.

Nice video Ivan and it's always great when you can catch them acting up. Always glad to see your videos!

Nice scanner, blue tooth and all. I just purchased my first used Vantage. Can't wait to learn how to use it. With you, Paul and Eric O. I will learn quickly. Just hooking up the meter has been tricky. I'm pretty amazed that a light can turn a driver on. I don't get that but I'm a newbie. :)

Some of the best troubleshooting on RU-vid

Ah, the legendary 3.4! Wonderful engine. Nice view out your window. Maybe you should analyze that particular injector, if everyone says it fails. Maybe too much heat for too long, maybe just fouled and expanding metal seizes up injector. Maybe a bottle of Gum Out fuel system cleaner. Hope you’re liking the new job!

Excellent video of a proper Diag. Cover almost all bases.

I had a misfire on number 5 plug and found it to be just the plug it’s self and replaced all six and wow it’s running great. Truck has 287k on it.

This was a great vid, very through. I ended up replacing all my injectors with eventually the same 302 code on cylinder 2. I'm still looking into it.

Love your troubleshooting and editing. "What about without a lab scope?", Ivan asks. Well, back in the day, we used a STETHOSCOPE and a noid light.

Great to see a new video. Thanks for sharing as always. Enjoy your trip to ETCG.

I had a bad coil that let moisture get in around the sparkplug which causes a bad misfire and huge loss of power

The injector wire you probed could have been tested at the PCM/ECU connector. You have high dollar diag tools, so pulling the pin and adding an extender and clamp the connection could have avoided the poke. The computer is easy to get to, one bolt and pull the side kick panel (at least in the older pickups). I only hope you sealed the poked wire, if not there could be future problems with that wire. As for the comment below about disconnecting the injector from the harness, you could have done it at the PCM connector as well since the wiring doesn't splice to anything else and the only common link would be the PCM. Either way great video, would have liked a part 2 showing the basic steps of replacing the injector (just trying to get a time estimate for myself on a T100 I'm fixing).

Very nice and detailed diagnostic approach good job👍👍

Duck for cover Ivan, the haters will string you up for "piercing or "probing" any wire, they just won't understand that sometimes it is the only way it can be done.

hey there Ivan,was wondering wat happen to u...been awhile...haha always great to see u and ur master diagnosis...awesome video my friend...

Did you ever get the ohm reading with it heated up? Another great one buddy. Your right this is a common issue with these and you laid out the perfect way to Diag it. I love watching your videos. I learn something new every video. I'm honestly kind of shocked that ETCG agreed to let you and Eric O come to the meet up lol. Don't embarrass him to bad. Lol.

Been waiting for a new video. One of the shops I diag at has the Launch. Got to play with it last week. Love the wireless capability.

Awesome this is precisely what my 02 4 runner is doing. It randomly misses but super rarely and in my case it’s not causing a CEL. it’s happened twice now in about 1,800 miles. I’m sure it’ll get worse just hopefully not before spring when it can be down all summer if need be as I have a Mach 1 to drive.

fantastic video , thanks for sharing!

Awesome diagnostics great 👍 job keep it up thanks for sharing

Nice video and nice use of the scope in the diagnostics. Without it, you would only be guessing on that repair. I personally do not like to use only a resistance test as they can easily burn you in diagnosis, unless f course you have an obvious open in that injector. I've used the scope like this many times and always ohm the injectors to see where they are. Most of the time they are very close to spec and still faulty.

In process of picking right equipment you have some nice stuff

Great job. I appreciate your educational videos.

Great video bud, you hit all the areas needed to properly 100% percent diagnose the problem, well done. Can you tell us a a lil more about that scan tool you got there. Also how did you and Erics bike race go, any footage? Btw thanks for taking the time to make the videos i know they are a lot of work sometimes even more than the repair of the car...lol

So basically you could have removed the hood from the vehicle and had a not parts required fix? Haha glad to see you using a test light and piercing wires! Make Dan proud lol. I was happy to see it finally act up and catch it on the scope. The way it works here is I will have the scope hooked to something for hours, give up, remove the scope then it will act up haha.

great case study Ivan

Great video, helped me a Lot, thanks

Love your case study's man

Hi Ivan. How is that new scanner comparable to the Verus as far as scanning features?? Is it better than the autel I have seen you use on previous videos?? By the way, excellent diagnostic.

I have that exact same problem atm, the only difference is that mine is # 1 injector giving me grief with heat soak, but working just fine when cold.

Is it possible that tiny debris caught in the injector's micro filter could create a fuel blockage? This would explain how the resistance was in spec, and perhaps also why a cold start would run just fine.

Excellent diagnosing Ivan.

Excellent video, thanks

The resistance check was'nt very definitive.The scope is your only man to visually intercept the problem.Having learned some previous history about injector failure in this model also helps.Landed a nice catch there.

Great video and information. Thank you!

Nice to see you back, Ivan. Considering all of the required labor to replace 1, and all the same age- I would've dropped in all 6 injectors "while in there". Maybe a length of fiberglass header wrap around each would help with the heat? What a poor engine/manifold design to begin with.

Nice job Ivan.

thank you very good demo... kudos my brother

That's some good real world testing and thanks for bonus material. I always like conclusive endings. Maybe it's just my OCD. haha

Good stuff Ivan.

You were perfect on your resistance numbers but they're only perfect at about 68°. Is there a formula for resistance in relation to temp? Just completed this exact job this morning on a tundra. Nice video

I tested a Injector harness with a Load pro and it worked. Pretty much the same way Ivan did except I just went positive and negative in the connector. Then I watched the amp draw with the Vantage. If you wanted just to check the driver Loadpro could do that too. I have videos on it. Nice job Ivan. Is this the video where your Verus gave you the middle finger like Eric's old Verus?lol.

I’m getting the same code and misfire but once the engine heats up on mine, the misfire goes away. It’s worse if I put the vehicle in reverse when still cold.

Great scope work thanks

Hi Ivan Glad to see another Video. Can you give alittle more detail on the new test meter or is it to new for a report? Does it have a scope? Thanks Welcome back.

Hi Ivan did you have a look at the Autel 906 (upgrade of MaxiDas)? Do you feel the X431 is more bang for the buck.Just curious.

hey Ivan, welcome back. seems like ages since last vid

excellente scope time =) need to make me one of those fuse jumpers for injector current ramps.

Seems like a sticking injector. did the owner end up buying a new injector, or just trying to clean out the old one? If he bought one, did he get a brand-new OEM injector, refurb injector, or a cheap generic knock-off?

Well, thank you,,learned a lot..

Hello i have changing cylinder head gasket and know the engine wants start Got spark and fuiel on the injector

Dude i like your Diag skills, man i would love to work with you..

good idea to check the PCV on these 3.4 motors becouse mine started smoking and had me thinking i had a blown head gasket or cracked head when all it was is a clogged PCV valve and this also causes poor fuel econemy

did you replace the other injectors hidden under the intake manifold while you were there? Did you go aftermarket or oem?

Good video. Aren't there any aftermarket injectors that will work?

nice video do you know if the autel maxidas 708 does miss firing count.

Cool nice vid buddy...

hi thx for the video....

quick question... I have a innova timing light 5568 but my corolla 2006 don't have the connection to the spark plug..how to ?thx

Methinks replacing the injectors in the first hour would have gone far to fix the problem. Injectors are considered a serviceable item like sparkplugs.

I have 1997 Toyota t100 3.4l crank no start Brand new cylinder head Head gasket Water pump Timing belt Spark plugs and ignition coil’s wires Alternator Can you tell me what really wrong with it?

Nice! I like your wiring integrity test; really cool to see that on the scope! Out of curiosity, have you ever had injector balance issues when only replacing one injector? It's one of those things we've all been warned about, or heard stories about, but I've never actually seen it happen!

I replaced on mine bank five 3 times and still get sputtering any ideas

Ivan, What about a Bad connection upstream(closer to injector) from your test point? :)

See you must of gotten a new scanner. The new Autels are bluetooth also. I almost bought a launch but didnt cause was leery on how it worked

What was the ohm reading when the injector malfunctioned?

For more load and faster failures you could have turned the AC on too for more load on the engine. Great video

As a quick test do you ever skip scoping and just switch injectors and coilpacks around to see if the misfire moves cylinder? If the misfire stays with the cylinder, then throw on a scope/ compression etc

I have error code p0303 but on cylinder 3. I replaced the spark plugs, wires, coil packs, and it has new headgaskets. All thats left are the injectors but hopefully that is it…

Fucking awesome. Learnt a lot thank you. I'm interested to know why the ignition signal appeared on the trace on scope? Is it simply due to proximity (emf) or us the control wire common to injector & coil persue ?

hey Ivan,how good are those scanners

Of the four personality types, I'm betting this guy is an Analytical-Analytical.

Quick question sr I have a 2 4l tacoma misfire on cylinder 1 I replace sparkplugs and still wires like 6 month old never replace injectors culdbe bad injector even hearing works??

Good video, nice information. But man I am anti wire piercing. Only because it causes so many problems due to moisture and corrosion specially if you in the northeast or close to beaches. If you have to pierce a wire then you can use dielectric grease to seal it back up. That may slow corrosion process down.

Looks really nice were you live.

Aye where's the verus ? Did it break

is that scantool any good?

Since BBB industries stopped offering free diagram access, anybody would suggest a similar service . Appreciate any response

sticking closed injector

Hi I need help my car Toyota runner 05 misfire 4 v6 4 liter I Changed new all part s and 0ne ingnition coils 4 ready but some time light come up Misfire again please help me ideal thanks

Where u at? I have 01 4runner doin same thing

Where are you located

nice scan tool.

What if there is no code.. Only when cold and clears after it runs for a few minutes. They can't find anything wrong.. thanks

I see two issues here: not using load pro and piercing wires. Both big no no;) Good video and free to watch.

How can you get all 6 injectors pulses on the Verus screen by just conecting 1 channel of the scope on the injector #1 feed wire? Thank you for your videos!

BBB no longer provide wiring diagrams.

do you recall how many miles just curious

Same cylinder on my 2003

You can not measure resistence in circuit. If your multimeter should not have some protection you already had fryed it out because you never inject voltage of any kind on a resistence measuring device. You will kill that device. For correct injector resistence measure you HAVE TO DISCONNECT the harness and measure directly on injector pins. This is not only for injectors. It is for any device. Resistence is always measured OUT OF CIRCUIT. Never let the multimeter receive any voltage on the resistence measure part of it.

that good idea

gud day my good people, pls i want to know more about japanies motor

Sounds familiar, eh? :)

Seemed like a lot of minutes looking at squiggly lines on a screen ... probably a handy, useful tool for a pro but ...

👍

I had

O nevermind jus started video lol

thats funny theres a big youtube meet up lol etcg sma sd ya i no he probly not there will probly have alot of stuff to talk about. funny to be there lol i just bought a new gas tank for my old truck n i didnt get to hepl install it oo i was pissed lol going to scholl to be a electrocal enginer tech oya perfict start was all this stuff oya these a sexy all white f150 09 lerite or watever leathrrrrr moon roof for 10gs maybe 9 tax in needs cam phasers in the 5.4 n wheel pressure sencor things omg its sharp new body crew cab hurrrrrrrrrrawwwwwwwwwww thats my deer eating grunt u no when ur in the deep south lol

Dlc connerctor 😂 a connector connector

nerd.......ha ha ha ha