I really want to say thank You, I have been looking for this vacuum leak for a really long time. Changed my throttle body, injectors,spark plugs,coils, upper intake gasket,and a few other things. Really wanted to find it myself and not deal with a shop, and watched many many vids and thought to myself, I guess it’s compression BUT when I saw your video, I immediately did what you said and it was my lower intake gasket and changed it .It is running so smooth and I felt a relief come over me. Thank GOD for you!!!!!!!!!!!

@bohemianclub9550

4 жыл бұрын

Bravo Homeboy...you think in the way i think too👍

@chelle315

2 жыл бұрын

I feel you on that one, I literally did everything you did. I found an OBD2 reader that does live data. My Short Term trim was eratic and way too high which while idling which means a vacuum leak somewhere. I hope I can find my issue. Videos like this really help the DIYers out here.

I know man, for sure I miss our "daily bread" in the morning. Still haven't found someone as dedicated to share in the word with me. God Bless, talk soon

@1ofhis518

5 жыл бұрын

I knew I liked your videos for a reason! Ain't God great!!! Lol take care bro!

Scanner danner, you're a professional. I learned a lot from you. Keep up the up the good work. BRAVO ZULU.

Unfortunately for the car owner this is true. There simply is not enough good technicians in my field and WAY to many parts changers.

Thanks for the great info! This is exactly an issue I have been having. DTCs occasionally tripped due to cylinder 1 misfires on 98 Saturn SL1. I wish I would have watched your video prior to buying new plugs, wires, coil, and injector over the course of a year. I also checked the compression just before buying the injector and it was fine. After the injector didn't fix it I opened my ears to hear a hiss. I then found an intake leak right by cylinder 1 using carb cleaner. It looks like water would be a safer way to go, that's what I will use next time. I am going to consider your purchasing your book. Well done.

Best car troubleshooting video for any car or problem that I've ever seen. Thanks. You saved me lots of money with my Neon.

I really love the content man I've been binge watching you since I found your channel it's really refreshing to see somebody truly confirm a problem and not just replace on a hunch you've taught me a lot of things. I was also very pleased to find out you were a man of God. God bless I wish you and your family the best.

@ScannerDanner

3 жыл бұрын

Thank you and nice to meet you my brother 😊

Thanks for taking the time to make this video... very good technicians are hard to find & your vid helps me get started on pinpointing the similar problem for my 2002 nissan quest

Appreciate you bro, this may be my issue on my 03 forester. Grateful for your input time in this video.

I still come back and watch your teaching videos because you are so fucking thorough, detailed and fastidious. You ALWAYS prove your theory. Thank you! Truth told though, when I fix things, sometimes I just accept a good result and move on without being certain.

Thank you so much. I've been looking for all of the information in this video on how to troubleshoot this without throwing parts at my truck.

Good Video, Found you through Eric The Car Guy. Happy i did, good info and easy to understand. Thank you for posting

Wish I saw this video before installing new plug, coil plug, maf sensor on my 08 Lexus ls460. I ended up doing a smoke test this morning and found smoke leaking from my intake manifold. Well at least I'll know I have done a somewhat tune up on my car and I guess I'll change all my gasket to be on the safe side. I'm no mechanic but KZread, Google, and forums help me out a lot

Piece of cake on that engine. Whole different story on my 3.0L V-6. Great video. Thanks.

Thank you! That was the plan, I am trying to combine book material with case studies. I think it helps.

this is a great video, very helpful for us non mechanics. I've got a 99 civic with a miss fire under load and this may or may not help me but it is nice to have another diagnostic tool to track down the problem. thank you I'll be subscribing to you channel for more information. keep doing what you're doing.

@ScannerDanner

7 жыл бұрын

Under load misfire will not be from a vacuum leak. For additional help.... It is becoming more and more difficult to answer questions here. I have 80,000 people asking me for help now. So I have created a forum to help you guys better. It is free to join and we can exchange pictures, wiring diagrams and waveforms if needed to help guide you through the process of troubleshooting your vehicle. Thank you so much! Hope to see you there. Paul Danner (ScannerDanner) www.scannerdanner.com/forum/post-your-repair-questions-here.html

SD we love you bro. You are one of the best technician I ever know

thank you for commenting and your kind words

In 35yrs as a tech I have never used water to find an intake leak..I have used oil,brake cleaner, carb cleaner smoke test etc..I can see water is a safer viable option..Thanks for sharing,

It is a great "pinpoint" test. Propane will give you an area, but the water shows exactly where. Thanks for the comment

Danner was my instructor. Hell of a guy, passionate smart and great to learn from. I'm no longer in the field and still watch his videos. Keeps me interested in diagnostics and sharp on what he taught me. Tell me my man don't look JUST like Karl Hagelin

@ScannerDanner

6 жыл бұрын

Thanks Needs!

Love this videos. Keep up the good work. Looking for more information on intake temperature sensors and the effect they have on fuel delivery

i love the smoke. smoke is great for confirming your repair. i hate come backs and charging twice for what could have been spotted on the first visit

i would have never guessed to check that on my srt. im going to do that test tomorrow and if that's the problem im going to be shocked. I have spent well over 1000$ fixing stuff that could be wrong.

Thank you my friend!

Thanks so much for the video. I have an '03 Dodge Dakota 3.9 ltr with over 300,000 kms on it. Long story short the fuel pump had to be changed. Just after the pump was changed I had a misfire on #5 cylinder code. Have changed out plugs, cap, rotor. Checked operation of injector using a stethoscope...all injectors were humming away. Did a compression test today and have some wonky numbers from that but that's another story. Bottom line will do the water check on the #5 and see what comes of it. Again...thanks for the video. Cheers.

@ScannerDanner

8 жыл бұрын

+oldesarge2000 thank you for watching!

@oldesarge2000

8 жыл бұрын

+ScannerDanner sometimes in life it's the simple things that work. Changed out the plug wires did a vacuum check.....seemed to hang a second on the bump but looked good otherwise. It had been a while since I had changed the plug wires. Changed them out and all is good. Hanging my head in shame but hey...if it works I'm good with it. But after watching this video I'm now aware of how an intake manifold leak could cause a misfire situation. Learn something new everyday.

Nice nice. Lovin' the vids dan,got my mind goin' :) Especially the 30 min one on the crankshaft fluctuation sensor.

anytime, thank you!

PRODIGY Sir ScannerDanner From the start to finish loved it tutorial great video amazing footage thank you very much. Take care and have a great day PRODIGY Sir ScannerDanner From Nick Ayivor from London England UK 🇬🇧

Good shit. Thanks for sharing Paul. I'm following along in your book.

Great video Paul. It's amazing what a simple thing like water can do, oh and a little common sense and knowledge.

@clarkgarber5495

5 жыл бұрын

We always use gum cutter. Water seems wrong. Love your videos!

I don't know what to say, but you are the best boss sir👍

learn something new everyday! thanks, keep the vids coming!

Great test, safe and simple.

Thanks Russ!

Excellent demonstration, thank you. 🙂

Beautiful. Simple and effective.

Great video! I always learn something useful with your vids. Keep them coming!

Fantastic !! Well done as usual.

Thank You for this upload. This video was awesome. You're a really good teacher.

@ScannerDanner

8 жыл бұрын

+Kaktus Jack thanks for watching and I'm glad it helped you

@82_KID

8 жыл бұрын

I absolutely agree. I have some educated people, as well as a couple of clown fools that reply to my channel, and don't contribute anything of value at all. You, sir, kick ass. My Blazer just developed a misfire and sucked the electrode out of at least one spark plug, so, I'm still trying to sort that out!

Great information and examples.

Never had an issue with that. I understand your concern though, just be careful if you decide to use a garden hose. No danger with a squirt bottle.

Very good development of the theme and accurate explanation !!!

@ScannerDanner

7 жыл бұрын

Thank you!

Thank you I will remember that it will be quite helpful for that vehicle and that engine thank you.

awesome test.

not necessarily intake gasket, I had a time when the injector o-ring was torn in half and was missing the other half, was causing misfires like crazy.

As others said, I never tried water for leak testing but it looks like a great idea. I think this would work better than propane. Gonna try it now on a problem child car that won't idle too well. Thanks for sharing.

I don't remember who showed me that test, but it is a great test. Especially when you don't have a smoke machine. Thanks for the comment

Ty... awesome info... I like the great tip using spray bottle with water... vs flammable liquid sprays.. I've seen so many cars catch on fire with techs using brake clean.... so dangerous..

Great video! Thanks

Good work! Keep it up

Scanner danner, you're the man. Intake manifold gasket leak will trigger a misfire.

@ScannerDanner

7 жыл бұрын

yes it will. Thanks!

as always very good video brother,GOD bless you!

It is helpful for me,I have my idea for DIY about misfire,thanks.

I'm so glad I found the channel. Your knowledge is incredible. Thanks for posting these videos!! Keep them coming :)

Helpful. Others suggest spraying brake cleaner at the leak to listen if the engine will run better, due to the extra fuel. I do believe that making the engine run worse would be easier and more conclusive. Thumbs up for sure!

@maungmaung4037

Жыл бұрын

I more like water test it not make fire. But seem like water test only can do at intake manifold gasket test but not other small leak from other rubber hose. But still good way without any harm.

I think you just diagnosed my issue on my 1995 mustang 3.8l it has a lean o2 sensor reading on only one bank, bogs when cold, and has a low idle. I am going to try this soon. Will let you know the outcome. BUT when first driving, it will begin to bog and WITHOUT changing the throttle position (still under load) the car begins to accelerate back up and run normally. All in the course of maybe 2-3 seconds.

Thank you!

Thank you. I teach at Rosedale Technical Institute in Pittsburgh, PA.

Hey Dan, I gotta tell ya, your the man dude. Awesome videos. I'm guessing your from the burg somewhere. I'm from Steubenville. Keep up the good work and....keep on scanning

@ScannerDanner

6 жыл бұрын

haha yep, about 10 miles south of Pittsburgh and my name is Paul Danner but it's okay, I get "Dan" all the time :-) Thanks Sean!

Great video thanks

Bravo very good ill try this my car msf c1

Great instruction and video! Thank you!

@ScannerDanner

7 жыл бұрын

thank you!

good stuff, thank you...

Very good video man.

Thank you

Po302 on my 2006 Subaru sti with 150,000 miles. Runs fine. Swapped plugs, ignition coil next is injector swap then leakdown test

@ThunderbirdRocket

2 ай бұрын

Might I ask you about your car / situation ? What was the specific problem actually ? And what was the fix ?

Scanner Danner is the man !!!!!

@ScannerDanner

6 жыл бұрын

thank you but I'm really not :-)

👍 super helpful as always! Thank you!

Question. I have been able to bypass stuff from some of your videos. I recently figured out my rendezvous has what I believe to be the wrong tranny. The one in it has no modulater valve but is looking for one. Also noticed an empty harness which I believe goes to a TCM. It exhibits shift concerns as well as dies usually in right turns and on the throttle. Also struggles uphill. Is there any way of tricking the ecm to think the correct tranny is in the vehicle?

on a map (speed density ) engine you can have normal trim numbers with a vacuum leak.

I know, you can hear her in a lot of my videos. Brings back memories, doesn't it bro.

I have the same car 97 2.0 liter sohc neon. I get intermittent cylinder 3 misfires when accelerating to highway speeds. I'm thinking I should swap wires and plugs because, the compression tested good plus i've rotated the injector positions and seen no difference. Plus I noticed minor corrosion in the inside of the wire to coil boot. Don't think they've ever been changed Has 160k miles on it. Also have to do a complete set of motor mounts and replace the egr system and tube in the future.

nice video sir!

thanks for the info good tip quick question you sometimes refer to using propane is that different to butane in anyway is it safer or more flammable etc

Wow great video. I'm running on a problem as well with an 03 neon myself. Had a p0301 come on it wouldn't act up in cold start though more when it was fully warmed up. Even at idle it wasn't as much as a concern only happened when I would accelerate. The engine would bog down badly loss of power and then the p0171 came on as well. I noticed my fuel trims go way high when I would accelerate my engine and would bog down. But as soon as I came back and to park the idle was normal and the fuel trims came down again. But only starts to rough idle when I have in drive. I'm assuming that the 301 is cylinder one meaning that problem is in that area and the 171 meaning it's a air and fuel mixture that is incorrect. Which leads me to think one or the other. Fuel injector which u had swapped but no light has come one yet. And two the intake manifold on cylinder one and this video is leading me to believe I may have just that. Also I was wondering is the fuel pressure at idle normal for a neon to be 6-9 psi. I know the fuel pressure at max is around 50psi. But I never do see what the pressure is at idle anywhere. And I get that in my scanner. And also this fuel pump is Brand New from AutoZone it's a Delphi fuel pump

Yes it only misfires when it’s cold! Replaced the dang coil pack and fuel injector when all I needed was a gasket

@scannerdanner update: on 2003 sable v6 duratec, i cleaned Maf, upon start up it went closed loop, stft wher still high average 32 on both banks.. after about 30 sec of running it back to missing at idle and open loop.. I do hear some hissing at back of intake to congested to tell tho, so I'm going to try the oL warter in the bottle trick now..

I've also used the techniques you've demoed for finding vacuum leaks, and in addition have a stethoscope I modified with several different interchangeable open end probes; made of various tubing scraps. It's far from perfect, but allows me to listen closely around most anything I can see, and some I can't. Running along gasket lines, there is no doubt when a leak is found. Some are dramatic. It's also great for quickly finding dead/shut off injectors, exhaust leaks, and more.

It would have, but I didn't check it. I was focusing on showing the water test.

How do you feel about using a can of carb or intake cleaner and spraying around the gasket to listen to idle raising?

that a nice unique teat ,I'll try to use it in the school

I get 301 or 302 codes after it warms up and (usually) when it's full tank of gas I get a 401 egr code. 04 Nissan Frontier 4cyl. Not every drive, sometimes a few days in between. Any ideas before I start a tune up?

I have a story, which is a puzzle for me and probably for many who reads it. I went to Firestone on Northway Hwy to do alignment and State Inspection. The car is old, and basically it is my toy-car to practice on auto DIY projects. 2001 Saturn SL2. The car was running maybe not the best, but normally, my main concern was alignment, bcs I did a lot of suspension work on the front, and my husband observing how I move parts around came to the conclusion that the car will never run again. At Firestone they couldn't do alignment, bcs they needed a special tool (for the rear), which they didn't have and advised me to go to a dealership to do a proper alignment. To my amazement they said that the current alignment on the car was pretty good, gave me a print, which proved it. I assume, the alignment was good, bcs I counted turns on outer tie rod very accurately. They said that the battery didn't pass the test (car was sitting for a long time), but passed the safety standards, so I need to make 50 mi on it and come back. I went back home, and on the way I noticed that the car started to shake slightly at one red light. When I came home the engine was shaking like crazy. I switched it off, took Actron, but before diagnostic decided to start it again and listen once more what the engine does. The car started vibrating vigorously, the arrow of the rpm jumping from 400 to 1200 and back all the time, then after a loud sound ("bum!") died. There was a small puddle on the ground from the transmission fluid. Actron gave P0404 code, which is emission code, so I decided to clean a Throttle Body, what I did, but there were not much changes. Next morning car died again on idling, when I warmed it up. Now in addition to P0404 it gave a code for the Powertrain Module (Engine computer). I started the car again and without any waiting in Idle went to the Toyota dealership, they did some work on alignment, but also didn't have that tool for the rear of the car, and advised one GM dealer. I suspected bad fuel, so I added like 1/2 tank to make it full, poured good engine cleaner, car started to run a bit better, but still vibrating at stops (though at 800 rpm already). No more leak fm transmission. In that condition (car was still vibrating on lights) I went to Jupiter Chevrolet Dealership, where they did the front alignment perfectly, some rear, but not toe (again no tool for that job on the rear). When I started to drive I immediately noticed that the car runs perfectly well, no rattling, vibration, you could sit like hour in Idle, it runs very smoothly and good. I went back to thank and ask, what it was, what did he do, but the mechanic gone for the day. So my question for the puzzle is: what can be done to the car that it develops a vibration on lights, and see how, not immediately after I left the Firestone, but after about 5 miles of driving? And what the mechanic at Chevrolet Dealership did, that the car runs with no problems now, very smoothly and quietly. Later he said that nothing was done besides an alignment, and he never opened a hood. Thank you for the great film.

Sweet man, it probably worked like a charm didn't it? It is a great pinpoint test for sure.

Excellent video I have 1nrfe dvvti Low rpm lack of power need to press gas more and sound from exhaust gogogo No rough idle No codes No engine light No white smoke 39mpg atm Change spark plugs air filter cleaned throttle body inside out Any recommendations Its an electronic throttle body can drive 70mph at 3500rpm but lots of noise

maybe this is what is going on with a Trailblazer we are working on...it keeps says air/fuel metering, and we replaced the o2 sensor, and it didn't change anything

I saw the thumbnail and was like "is that a Chrysler" I knew because I have a neon and that's the only car I know with an engine that looks like that

nice job

Brilliant!!!

Gracias 👍

My car has a rough start when very cold outside, but runs smooth until the engine gets hot. From that point, hesitation on the gas, erratic idle, no power.

Hey scanner danner i have a 07 avalanche with 5.3 with misfire. I did a dod delete and took afm out of pcm. P0300 comes up frequently. Had p0101 pop up for a little but but is a new map sensor. I replaced pvc valve and it ran like new but slowly misfire came back then last week took right side valve cover off and ran it and misfire went away and ran nice. Put valve cover on and ran like a champ for a couple miles then slowly developed a p0101 then p0300. Im lost.

Wow thank you

best teacher

Hi, do you know why I miss the exhaust and the air filter very hard when I go on the LPG and petrol I don't have much? Noting that I changed the spark plugs and plugs, I cleaned the throttle and the idle valve (air flow meter). Thanks!

Hi. Muy chevy 3.4 has rough idle. If i close the trotle body with muy has it doesnt stop. If i unplug the booster conection it istabilises. If I try to open the oil cap I cantón do it un les the cae is off. It coul be a vacuuum gasquet probem?

I'm getting a misfire on all 4 cylinders, could this also caused by bad distributor? i only get misfire when i gun it hard. 2000 honda prelude

I think my original comment got erased or something idk,thank u for this video i will DEFINITELY be back on here after trying this.ive got a spray bottle,now i just need a prayer

@christopherhitchens1502

Жыл бұрын

New coils plugs, injectors,swapped them all around too,and still cylinder 2 missfires code but also p300 which i didn't get before replacing it all.however it runs better after injectors replaced.the2nd cylinder injector had a crack around knozzle so i saw that and got excited like i found it.well it runs better now and the warmer,the smoother and less spudding or jerking..if I'm smooth and easy with the throttle its good and idles great after warm up.this leads me to believe now there is also a vacuum leak somewhere and i will be trying this in the morning.thank you for this video i wish i found you years ago

would that leak have shown up on a vacuum tester?