Diagnosing Lean Conditions

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On this episode of Fear No Fix, Chris and Jordan break down the various things you'll want to investigate if you're getting codes/symptoms that suggest a Lean Condition.
If you need to read codes or live data to help diagnose your issue, BlueDriver can help! Get the #1 Scan Tool on Amazon here:
Amazon.com:
www.amazon.com/gp/product/B00...
Amazon.ca:
www.amazon.ca/gp/product/B006...
Top DTCs (Diagnostic Trouble Codes) associated with Lean Conditions:
• P0171
• P0174
• P2096
• P2195
• P2187
Top symptoms associated with Lean Conditions:
• Check engine light
• Poor engine performance
• Misfire
• Rough idle
• Lack of power when accelerating
• Poor fuel efficiency
• Engine may stall
• Difficult to start
Video Sections:
Intro: (0:00)
Reading Codes & Live Data (0:27)
Vacuum Test (2:26)
Checking for Vacuum Leaks (3:25)
Checking Mass Airflow Sensor (6:25)
Fuel Pressure Test (7:38)
Rest Test (9:26)
Fuel Volume Test (10:15)
Checking Fuel Injectors (12:10)
Exhaust Leaks (13:15)
Outro (14:02)

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Опубликовано:

22 июл 2024

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Комментарии : 99

@ckuiper7332 3 года назад

Excellent!! The best, most thorough diagnostic video I've ever viewed! Professionally complete and thorough - without all the BS... Awesome!

@SDsimplelife Год назад

Amen

@patrickzambori473 3 года назад

soapy bubble trick only works on pressure leaks, not vacuum leaks. Most often with EFI, the ISCM or electronic throttle will compensate for idle speed and you won't hear a jump in idle speed when hitting a leaky spot with propane or flammable spray, or water... but if you watch the short term fuel trim with your handy bluedriver (tm) unit, you can definitely see the trims spike. Here's a feature suggestion, how about incorporating a "beep" tone to the app when fuel trims spike to the negative, to help in this situation...

@19lol19 Год назад

Love how detailed these guys are

@devin2269 Год назад

This was amazing! Thank you both. Best I’ve seen. Please continue on this path in life😁

@stuuuporman 2 года назад

Finally, something highly educational with no bs! Thanks😉

@boomcity4942 Год назад

This is awesome. I found this channel through a link created by my BlueDriver scanner. This product and service far exceeded my expectations.

@simonac688. Год назад

Best tutorial on lean & fuel trims and other issues on YTube 👍🤷🏼‍♂️👍

@fst1973 6 месяцев назад

I purchased this tool in 2020, the best money I have ever spent on diagnostics. Always within my reach, it has saved many friends and family members.

@johnmeek6790 2 года назад

Another great informative video from you guys !! Thanks again !!!

@FreddyFunderbunz 3 года назад

I was hoping he was gonna spray the fire extinguisher around the hoses to check for leaks 😂😂😂😂

@maggiealena 2 года назад

Bluedriver is just the best diagnostic tool.

@NINOgarage 7 месяцев назад

Just fixed the check engine light on my Mazda 6 by replacing the MAF! Awesome video!

@thitran483 2 года назад

Thank you for the awesome video, you guys are the great instructors. I learned a lot from this video.

@FishstixTv 2 года назад

Glad I got this blue driver I’m pretty impressed with this and the help that comes with it thanx

@briansturgill5905 2 года назад

Great video guys. Been tracking a P1126 lean bank 2 on my Porsche Boxster. Haven’t found anything off yet. So hard to find. Final check will be exhaust. Also the Brake Booster check valve can cause a leak condition as well and easy enough to check. Thanks for the great videos!

@geomcc39 3 месяца назад

Great video.!! No guessing working hands on problem solving great !

@JonnyBlaze325 3 года назад

I was able to find the crack in my hose with the soap water! Nice!

@mspussd6619 Год назад

Great job guys it was so great that you explained it so good nice and slow great job that's the best view I've ever seen I'm a mechanic but I work on semis not too much on the smaller stuff so great job 👍 thank you! Bill,

@Funkyflykiwi 3 года назад

Brilliant video guys👌🏻👌🏻👍🏻

@daniellaviano4959 2 года назад

Absolutely excellent video 👌👌

@DavidRedwine-ng7tt 2 месяца назад

Very good explanation of how to test the system

@juancamaney3562 2 года назад

Thank you guys for this great video 👍 . My 1986 Toyota van runs really good on any speed and it also starts right away with no problemo , But sometimes it sputters when I accelerate of a stop , Can a bad fuel pump check vale cause a car to sputter on accelerating ? 🤔

@blurMerced 3 года назад

Keep diagnosing videos coming

@bazzookagames470 3 месяца назад

what an awesome video thank you so much

@sanjeev3144 9 месяцев назад

Thanks guys, thats really a very Informative video. However i did also learn in the Techschool that the defective EVAP valve or EGR valve can cause lean Conditions and therefore false Fueltrims.

@carrytrainer.editor3321 3 года назад

Great video! Time to push my Blue driver to the next level

@chadschmidt644 2 года назад

Great video but really wish you guys would make a video about LTFT and STFT using live data. There's a few videos (on RU-vid) out there that don't even require popping the hood to diagnose a problem.

@gusvega27 8 месяцев назад

Very professional thank you.

@najibkarma6658 3 года назад

Great job 👏

@JeremyMichaelJordanDIY 2 года назад

This is a great video guys

@davidhicks8290 2 года назад

What does after the throttle body mean in the vacuume gauge section? Towards the engine or away? Does the pcv valve line count?

@efijemuehphilip542 2 года назад

Hi, thanks for this educative video.i have a similar problem where the engine is running lean but when I unplugged the 02 sensor,it ran fine.So I replaced the sensor and the engine ran fine for a dey.the next day ,it begins to run lean.i have not been able to find a leak.thanks for any help from you

@AllenBallachABA 6 месяцев назад

These guys are the best

@capitalr8649 Год назад

Yes..my exhaust flange is leaking causing a rich condition with my ltft in the 15-19%. I have a p1175 code.

@-g.k.4389 2 года назад

I bought aftermarket EGR from Amazon it came with 3 gaskets but I used one and today I sprayed carb spray by the egr and the engine changed. I was wondering should I have used all 3 gaskets,? My engine is stalling and rpm won't stay in sweet spot

@51249ca Год назад

currently see a P013B Lean to Rich (Bank 1 Sensor 2) code on my 2017 Subaru Outback 3.6R

@amarabdelli487 8 месяцев назад

Thanks for sharing

@keenowl1410 Год назад

Great video

@domingson Год назад

You guys are great

@salemmajed2556 2 месяца назад

Thank you

@lukehxstxn1357 Год назад

Could a bad knock sensor cause a vacuum leak? (I have a Miata)

@joe3941 5 месяцев назад

Can you make a video how to check traction control all system because I have slip mark on the dashboard 😅 couldn’t figure how to check it

@monirobaid5809 23 дня назад

Is it possible to have a lean condition on both banks if I have a leaky valve cover gasket on just one bank ?

@RoseKnowsTreasure Год назад

This video was so much help!!!! Thank you!

@proudofthe3211 3 года назад

Excellent 🚘

@dutch971 Год назад

Do a thorough video on live data. Chris fix style quality.

@user-qd5tq8wk2z 5 дней назад

When I make a simple observation, the spark plug was absent from the reasoning. The spark plug gives direction to the topic in terms of fuel injectors. The injector does not overcome the air, and the spark plug is almost clean and different from the rest.

@dominicdiesposti2068 4 месяца назад

MEMO TO SELF: First, I am a retired federal safety officer. I see an issue in this video that is very common among most people who own fire extinguishers. The fire extinguisher is placed in the engine bay area. What is the problem? If a fire breaks out IN THE ENGINE BAY, you will have to reach INTO the fire to access the fire extinguisher. BIG problem. Set your fire extinguisher 5’-10’ away from fire potentials. You will still have immediate access to the extinguisher…and keep the hair on your arm. 👍

@sarahobrien3379 2 года назад

While driving my short-term fuel trim jumps up randomly to like 12-19 but overall it stays pretty steady +-3. Do you know what might cause that?

@GrandmasMallCrawler Год назад

does it happen when the engine is under load or when you let off the gas pedal?

@MansfieldRacing229 21 день назад

A bad 02 sensor can cause a lean condition right? And cause the fuel trim to be +

@weaslemin7728 7 месяцев назад

Fantastic

@dallaspilotcar9293 3 года назад

I have been using the Blue driver for over a year. I am issues with my 2016 Nissan Altima and the things that are happening should be contradicting what kind of codes that i am getting. Also is there a code that says if a cat converter is bad?

@LemurMonitors 3 года назад

Hey DallasPilotCar! We have a option in our app to send us a support email, if you go to the more tab and tap contact us then select the email option. You can type out what the issues you are seeing are and if you scan your Altima first we will get a log of what is going on behind the scene's a little. The log will auto attach when you use the email option in app.

@ryans413 Год назад

One thing they didn’t mention was the fuel pressure regulator. If it’s stuck open more gas will return to the gas tank and less pressure will be in the rail under load. The fuel pressure might be okay at idle but once put under load there might not be enough pressure to keep the engine going.

@ochjoo77 3 года назад

Awesome

@RobertoSantiagoRodriguez 3 года назад

Thanks so much, very helpful! What if the vehicle has a MAP sensor instead. Tx again.

@TIHIS Год назад

As your tank gets hot pressure inside is supposed to escape charcoal canister then to purge valve then to intake. Take note if this pressure builds after 30 minutes driving your car might start bogging. Reversed pressure sends fuel from injectors back to tank. Lean...lol

@adrftgvvbh 3 года назад

Chris - It almost looks like someone cut it with a knife Jordan - 🔪🗡

@jacobsebastien3910 2 года назад

Probably his baby momma lol

@Aviator013 3 года назад

Wow great video

@davidbaros3618 Год назад

Done did all that,mine isn't a leak,there isn't a shop on earth that can fix mine

@Freedomind901 3 года назад

is 6.8% long term fuel trim bank good?

@mbarboza79 3 года назад

Yes, always remember to keep trims no greater than -10 or 10.

@dm7097 3 года назад

Kinda liked the Motorcraft battery in the Chevy. Lol

@LemurMonitors 3 года назад

🤫

@ssalamri7302 Год назад

you can fix 20 problems in cars if you watch this video great jop guys and thinks 👍

@truthseeker1203 Год назад

“Oh wow I don’t know how we missed that it almost looks like someone cut it with a knife!!” They definitely cut it before the video lol.

@billybobbarker3175 7 месяцев назад

Smoke machine finds vac leaks fast and EXACT where. No fire extinguisher needed. 120$ for a smoker.

@therealdocz Год назад

I unhooked the sensor while it was running and it shut off.

@jerichobeach2967 9 месяцев назад

Apparently that means it’s working perfectly

@jamesbrown7379 Год назад

You should show where your connecting you gauges

@OLIVER949OC2 Год назад

Damn yall bad ass

@joralriver9052 3 года назад

when checking air mass flow sensor, when unplugged what if the engine stops??

@reyeslara6001 2 года назад

I want to know to !

@jefflal5804 Год назад

Bad maf sensor

@PETE4955 2 года назад

Using E5 petrol this can occur.

@Bigshoots86 2 года назад

The bigger guy sounds like Dolph lundgren

@JeffroDH 4 месяца назад

I can hear the vacuum leak on the video.

@DomAnthony89 3 года назад

Jordan needs to do voice over work. His voice is so smooth.

@johnmitchell2741 Год назад

if that's a 5.4 it needs a timing chain

@deityreefer6617 Год назад

They seem so bored 😂

@davidbaros3618 Год назад

Told it was a low circuit,not a leak

@CharlesLease-ei1ee Год назад

Or just read the data and you will see if it’s a lien or not

@johnmitchell2741 Год назад

Sounds like you have a lot more then a vacuumed leak

@ryantaube6546 2 года назад

That thing has bigger problem s then a vacuum leak

@LemurMonitors 2 года назад

We do use each vehicle for more then one video so they do usually have more then just one problem yes!

@aeyb701 2 года назад

Maritimes accent

@why2cayx 3 года назад

Before wasting time update your plugs and wires..

@why2cayx 3 года назад

Bet they cut it with a knife..

@jacobsebastien3910 2 года назад

Baby momma must have cut it Lol'

@chupamishuevos303 Год назад

THANK YOU WOW GREAT JOB GUYS

@jamesendsley1560 Год назад

I looked into mine and it's saying Lane fuel not enough fuel getting to the system itsfunneh are and all the other stuff so the injectors not put in enough fuel in it right

@jamesendsley1560 Год назад

Yeah the 2017 or newer will pop the code up saying hey there's a vacuum leak on top of your lean fuel condition

@jamesendsley1560 Год назад

I have a code it says cylinder for running Lane

@jamesendsley1560 Год назад

The 2017 Dodge Durango doesn't have a mass air flow sensor has a temperature air flow sensor

@jamesendsley1560 Год назад

But you also have a code saying vacuum leak