How to find VACUUM LEAKS

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How to find VACUUM LEAKS

Рет қаралды 872,970

Күн бұрын

I describe and demonstrate three different ways to find vacuum leaks on your vehicles engine. The water method, carb and choke cleaner method, and propane method are all explored
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We hope you enjoyed this video and will keep in mind that all information included is intended to be purely academic and in fact is only the opinion of D&E. We are not professionals, nor are we qualified to knight you a professional. D&E want to ensure that anyone modify or fixing their own vehicle does so in a safe manner which leaves the vehicle in a legal, roadworthy state. In short, DON'T BE A MONKEY WITH A TOOL BOX! If you don't know what you are doing, leave it the professionals!

Пікірлер: 583

@karmicmessenger 5 жыл бұрын

Speaking as someone who has been using flammable materials to find vacuum leaks for over 40 years I have seen my share of flash fires.I always thought it a necessary evil but it is not the safest way, I recently found out. The safest way is to generate and inject smoke into the intake under mild pressure and see where it comes out(with the engine off). Just last night I saw a guy confirming bent valves with the same method by setting the cam lobes to fully closed and injecting smoke into the spark plug hole.Genius! You learn something new every day.

@tinkerscorner54 4 жыл бұрын

Finally. Someone who knows what breaks the rubber down when using flammable liquids. I haven't seen anyone else mention that.

@s.j.5850 2 жыл бұрын

Not only excellent tips to find a vacuum leak, but excellent explanations of the pros & cons of each method, as well as safety precautions!

@3500camarz 4 жыл бұрын

The smoke test method is also the safest as you don't have to worry about a running engine!

@johnrackiewicz286 Жыл бұрын

I have been doing research on finding vacuum leaks. Positive smoke pressure seems by far the most effective and SAFEST way to do it.

@rodkennedy9800 3 ай бұрын

Think you may need an expensive ‘purpose built’ machine for the method you’re referring to. The method highlighted here uses ‘everyday’ tools/equipment found in most do it yourself people’s toolbox/shed.

@mrsmartypants_1 24 күн бұрын

⁠@@rodkennedy9800Theres numerous vids that show you how to make very inexpensive, effective smoke machines for less than $30.

@jamesearly729 4 жыл бұрын

Extremely informative with much wisdom involved. The quality of instruction I would want for any mechanical staff with caution I would also want in a compliance inspector. You are the man.

@michaeleisenbise4278 4 жыл бұрын

Absolutely a fantastic video. Loved the safety tips. A lot of good stuff here. Am 69 years old. Have been working on cars for a long time. Feel this video taught me a lot. Thanks for the great video. Loved it.

@grominwithrob1339 3 жыл бұрын

I was a small engine mechanic for years and always used starter fluid because of the small amount of oil present in my mind made me think it was less likely to over dry. I really like the propane idea.

@michaelh7527 4 жыл бұрын

Love your idea! Give you another idea. You can do this on a cold engine not running. Get a fog machine. Attach a PVC pipe and hose to the machine. Connect it to the brake booster vacuum line and you will see the smoke coming out. A friend of mine was struggling to find a vacuum leak. He had been working on it for a few hours. We used this method and found it within a minute.

@donoimdono2702 Жыл бұрын

if you don't have a fog machine, use some 2-stroke fuel in your 4 stroke lawn mower and attach a hose to it's exhaust. that also works for killing gophers and other burrowing rodents in your field.

@garyhedger1503 Жыл бұрын

Good video. Yes, the soapy water method is good for finding positive pressure leaks such as pin holes in tires and wheels, not vacuum leaks

@jojozepofthejungle2655 4 жыл бұрын

As a precaution with rubber hoses and fittings is use a 1/4 spray bottle of gasket leak sealer mixed with 50% mixed coolant and 50% distilled water. This stuff keeps all your rubber stuff as new and restores old rubber. I even spray it on exposed gasket around the head and underneath the car and around tyre rims and air valves even my wetsuit. A $50 bottle lasts forever and saves a lot of heartache.

@joefoster8288 Жыл бұрын

I don't quit understand the proposition of each ingredient of gasket sealer to a 50/ 50 mix of Distilled Water and Anti freeze. 🤔

@theGADGETSplaylist 5 жыл бұрын

Older vehicles maybe, but I've found watching for RPM increases with the introduction of propane doesn't work very well with today's Idle Air Control (IAC) which quickly steps in to maintain steady RPM. Perhaps watching for changes in fuel trims on a scanner as propane is introduced but I haven't had much success with that either. But that's just me. I opt for smoke test.

@213BRANDONP 3 жыл бұрын

I agree with smoke test however this method does work in the event your able to get propane in the correct place but that's more trouble than it's worth if you have a cooling fan blowing the gas everywhere smoke is by far the best method only supplemented with pressure leak down tests at the purge

@TimmayFilms 6 жыл бұрын

I'm glad I found this vid. I was thinking about using my old propane rig, which is already set up with a hose, so I came in and checked KZfaq. Here you are, thanks!

@matthewk6731 3 жыл бұрын

I'm 62 and have never heard of this before today where I have seen it twice.

@susanneortiz9657 5 жыл бұрын

My father told me he was going to propane to find the vacuum leak on my car and I got quite nervous. Thanks to your video, I can now breathe again.

@1usArmySniper 5 жыл бұрын

I was a carb cleaner user for years, though scared I was going to catch fire and burn to the ground myself. You've convinced me to switched to the propane method bud! Great video. Clear and concise with no BS added. Thank you!

@gweedomurray9923 4 жыл бұрын

He is good ! I just wish we could have gotten a live demo of the engine changing speed when you hit the leak, even if he had to pull a line on purpose just to illustrate the effect.

@3500camarz 4 жыл бұрын

Propane method is good, but I prefer the smoke test method. Easy to find leaks and you don't have to have the car running.

@datawrangler81 3 жыл бұрын

Couple stories of bad burns with starter fluid carb cleaner in other threads, better to use propane, or try scotty kilmers cigar method

@ThereIsNoGodOnlyUs 5 жыл бұрын

For the most commone torch nozzles, be they brass or steel, the sizes for the hoses tend to be either 1/2" inner diameter for the brass tips and 3/8" for the benzomatic tips.

@adamfreeman1347 5 жыл бұрын

Good video 👍. If you are keeping your car and your hoses are old and cracked. Start replacing Vacuum hoses they are inexpensive sold by the foot. It will save you time and give peace of mind.

@kyuseung813 4 жыл бұрын

Thank you for sharing a safe way to detect a vacuum leak using the propane tank.

@waynemiller9574 5 жыл бұрын

Thanks never tried the propane method and have a car with that exact problem .

@badmotherhumper 5 жыл бұрын

your beard tells me your propane method is safe!

@tacoman864 5 жыл бұрын

Am i the only one that found this funny as hell?

@badmotherhumper 5 жыл бұрын

@@tacoman864 Thanks duder, I try. Turned out my issue was the MAF sensor wiring harness had issues 200 bucks at the shop.

@tacoman864 5 жыл бұрын

@@badmotherhumper ah cool my map went out on my 88 f350 she ran like shit finally figuared it out though 300 bucks later lol

@sickandtiredofcomplaining6574 5 жыл бұрын

You should hear what his penis had to say! It’s real mouthful 🥴

@Zoofactory 5 жыл бұрын

@@tacoman864 I can't even focus on what he is saying... The beard is... Frankly, it's just too damn hypnotic. Someone snap their fingers for me please.... ( Funny stuff Taco Man! I'm in tears.. ;)

@lauriek6969 5 жыл бұрын

Your video is very clear and easy to understand. Excellent job! Love the tree tattoo on your forearm.

@juliosantos9289 5 жыл бұрын

I'm having a idle issue and am going to do this before going to the fuel. Thanks bother. Good info!

@DEInTheGarage 5 жыл бұрын

Good luck!

@nathanmatthews8172 4 жыл бұрын

That beard is a masterpiece. A national treasure.

@jeremiahlubke7583 5 жыл бұрын

It's better to do this outside. Propane is a heavy gas, heavier than air, and can collect in the floor drain/pit of your garage creating an explosion hazzard. I do HVAC/R and we had to have training on flammable refrigerants like R290 (propane). With that said, i agree this is the best method, great video!

@DEInTheGarage 5 жыл бұрын

Good extra info! Thanks!

@petrokansis 5 жыл бұрын

I mentioned that because all these people were just told the opposite dispertion of a super explosive gas that will actually travel right down the sewer and ya have fun.But hope people listen to this because it does work but be really careful.message is backwards

@kellismith4329 Жыл бұрын

Definitely can be dangerous if you let it collect anywhere, it also consumes alot of oxygen when it burns so lots of ventilation required

@fordfan7829 4 жыл бұрын

I have seen Mechanics make a mess with spraying brake clean to find vacuum leaks. I use propane too and its the best. Nice Vid.

@blk77sunshn 6 жыл бұрын

I must say this method has to be one of the best I've seen (I've used the other two and gages) I'm going to try this next time round, thanks indeed!

@DEInTheGarage 6 жыл бұрын

I think you will like it. It is easy, cheap, and effective

@michaelbarber1906 6 жыл бұрын

Hey brother, thank you for the info, I have always used carbeurater cleaner, never thought about a fire. may sound stupid but the problem could have been an electrical and would have burnt like hell, LOL

@timothkeyyprice 5 жыл бұрын

Would have been nice to hear the change in engine idle. Thanks for the tips.

@DEInTheGarage 5 жыл бұрын

Fair enough. Thanks for the feedback!

@frankholtzclaw765 4 жыл бұрын

I never would of knowed I watched this video In silence [no volume] as Paul Harvey said and now for the rest of the storyno engine idle thank you T Price.

@cr112784 4 жыл бұрын

9:51. Dope deciduous tree silhouette! I’ve been drawing and photographing a couple thousand deciduous tree silhouettes. Ive got a close up looking thru the branches in the foreground w/an abstract nature-scape in the background. They’re nature’s perfect stamp.

@DEInTheGarage 4 жыл бұрын

That sounds pretty awesome. I am definitely a fan of the natural beauty of trees

@MisterDeets 2 жыл бұрын

Tried Mapp Gas (it was what I had handy at the time) and put it right on where I later identified the leak coming from audibly using a section of pipe to isolate the source and it just didn't seem to react with increased revs in a struggling engine. The leak is huge and you can hear it hissing bigtime. If you can hear the vacuum leak hissing, you can isolate it with a section of pipe put up to your ear. You could probably do the same with a section of hose as well.

@donaldpauli129 5 жыл бұрын

Done this for years. Very reliable

@johnfranklin685 4 ай бұрын

This an excellent, consciousness video; however if you have an older vehicle and are not equipped with a propane torch, I would suggest buying all new vacuum hoses. All hoses are subject to decomposition, and by replacing them you will be rest assured that the problem will not arise in the near future, and you've saved having to by a propane torch you may not frequently have a use for.

@TheMstwntdLMSV123 5 жыл бұрын

This is the best vacuum leak guide on KZfaq 👌🏻. Just a quick note- vacuum leaks could also come internally from inside the brake booster, EGR valve, or PCV valve, and you can check these by clamping on the hoses that lead to them.

@DEInTheGarage 5 жыл бұрын

That is a very good point. Thanks for the add

@johnmcminn9455 4 жыл бұрын

Great video very clear to what works. Fire extinguisher. Yes, that is the next thing i must buy . Cars don't run well when they catch fire!

@alfredozertuche784 4 жыл бұрын

learned something new. Thanks Ive always used brake fluid, carb cleaner, starting fluid but always afraid to have an arc ignite the puddles that gather at times. I've used it to test fuel pumps as well. I learned to not stomp the gas pedal while injecting starting fluid cause its prone to backfire with a flame. I'm curious if this method would be any different when trying to test for a bad fuel pump. Curious if you tried it and if you pressed the gas pedal while doing it. I'm more then sure it would be the same but with a more explosive reaction due to it being a vapor then a liquid fuel.

@vr6prodigy 5 жыл бұрын

I used my vape while the engine was off and cold. I simply vaped into my brake booster line and watched where it came from. Found my leak without flammable materials. Great video tho

@stephenhunter6507 5 жыл бұрын

Did the same with a cheap cigar

@metalhalide4043 4 жыл бұрын

@stangmaster 2 Agree, much faster and safer method..

@gristlevonraben 4 жыл бұрын

Sometimes the purge valve is open, techs use a machine to close it. You could temperarily tape the two shut, purge and check valve. Also, remember to take the tape off when done. Sometimes the valves themselves are bad. Good luck and don't hurt your lungs, if you do, take high quality co-q10

@metalhalide4043 4 жыл бұрын

@@gristlevonraben Purge valve is normally closed, vent valve on charcoal canister is normally open..

@gristlevonraben 4 жыл бұрын

@@metalhalide4043 my bad, sorry.

@vernroach3413 6 жыл бұрын

Excellent video, from smart, common sense instruction....I have learned something...My thanks to the gent that made it.

@DEInTheGarage 6 жыл бұрын

Thanks for the feedback! Glad you found the video helpful

@testuser3167 9 ай бұрын

A home-made smoke machine (including a flow meter & a a small battery powered aquarium pump) can be made on the cheap to provide low positive pressure for visually finding vacuum leaks and if one uses glycerol instead of mineral/baby oil, it becomes both safe, easy to use, and non-toxic to breath the smoke, plus with or without smoke, one can then more effectively use the soapy spray method. As a bonus, you won't need a fire extinguisher with that setup.

@Hyediver 6 жыл бұрын

Appreciated safety tips with fire extinguisher and safety glasses.

@UnknowPresence 5 жыл бұрын

Damn excellent idea, I never thought of using propane gas, it makes allot sense.

@JAM-zb2vh 4 жыл бұрын

hello brother Just want to say that I love the beard And I like The idea of using propane. Keep the videos coming god bless you

@DEInTheGarage 4 жыл бұрын

Thanks buddy!

@NickyNoyes 3 жыл бұрын

Thank you for your time. I know how to do this But my son who was 16 @ the time. Your video was educational and hit all the marks. Thx again🤙🙏 -San Tan Valley, AZ.-

@gooburrum 5 жыл бұрын

Very clear instruction. Thanks.

@mattedwards4533 4 жыл бұрын

I use only propane ,contrary to what some have said it is the safest way. Propane may flash over if it does ignite but it is brief and easy to control. I also use spray lacquer to seal some leaks. Lacquer drys almost instantly and will give a permanant seal to leaks in places like a warped throttle body and Lacquer doesn't damage rubber.It sure beats spending over a half a day taking off all the mess on top of todays engines to fix the leak?

@MrGeoffreyhines 6 жыл бұрын

Fuckin brilliant. Most logical, effective, quickest, and safest method I’ve seen. Thanks brother!

@DEInTheGarage 6 жыл бұрын

We certainly thought so, haha. Thanks for the feedback!

@dennisolsson3119 4 жыл бұрын

As far as I have understood, your 1 should be either: 1) pressurize the system from shop air (regulated of course) and use soapy water, or 2) pur loads of clean water into the engine compartment (nor spray bottle, pour directly from bottle)... The first will bubble on your leaks and works with a shut off engine, the second works at any temperature. As for water in the engine compartment, ask yourself what happens when driving after someone else in the rain. :) Besides these points I only agree with your points for 2 and 3. Thank you for your video!

@joseirizarry8256 7 ай бұрын

Thanks, excellent video and explanation, blessings to you and family.

@dm7097 5 жыл бұрын

Dude you got me with this one video! I subbed right away! Awesome presentation.

@DEInTheGarage 5 жыл бұрын

Welcome to the channel! Glad to have you!

@bertblue9683 5 жыл бұрын

Didn't see someone mentioned it in the top 20 or so comments but Propane is heavier than air so this could help putting it where you want in those hard to reach areas.

@DEInTheGarage 5 жыл бұрын

Very interesting.. that had not occurred to me previously. Thanks!

@sneakthief5724 6 жыл бұрын

This is a solid video. Great info! I never liked the Ether method...

@elysvillasmil9647 4 жыл бұрын

Exellent description . Thanks for your help

@SzymekCRX 5 жыл бұрын

Great teaching skills :) Have a good day!

@DEInTheGarage 5 жыл бұрын

Thank you. You too

@robertgerver5455 2 жыл бұрын

Excellent vid , masterful dissertation.

@joelrickards2315 4 жыл бұрын

Thanx sir I especially like the safety reminders great job my good man!

@unkyjoe 2 жыл бұрын

Good presentation in my opinion and including safety awareness is noted. Thx

@victoryfirst2878 4 жыл бұрын

I have found that using a carbon dioxide fire extinguisher is the ticket. You do not have to worry about cleaning up some yellow flour which is impossible to totally clean up. Where the gas just does things right. Good day and nice video with different points to consider too. VF

@miked3502 5 жыл бұрын

Hank Hill approves

@katburgess887 4 жыл бұрын

Propane and propane accessories! Lmfao

@bobby_hill8357 3 жыл бұрын

I'm about to try the propane technique. I wish I would have known about it before I went and bought a new intake manifold and replaced it myself only to have the same vacuum leak.

@kalinradoulov3760 4 жыл бұрын

Keep simple and safe, i like the vaporizer method.

@chiefkicabich7312 5 жыл бұрын

I Sprayed willy nilly once. BAM!!! cracked my rubber!!! Diggin the beard bro.

@bentnickel7487 5 жыл бұрын

I went to school with William Nilly and he wasn't as crazy as his sister Silly.

@joehyundaitech7961 5 жыл бұрын

grate video I learned a lot and you brought up a lot of good points like for IE spraying starter fluid on rubber hoses that are not leaking but may from it drying out the hoses. so glad i found your video

@mayeri3083 4 жыл бұрын

Wow pretty slick not bad. Good tip there. click on this video originally thought you were going to help me with my vacuum leak for my AC, whenever I accelerate over 30 miles per hour I lose suction or vacuum in my AC,as soon as I release my accelerator pedal the AC blows nice and cold. Just not sure where to start from while seems there some type of vacuum or something that's pulling whenever I accelerate. Do you by any chance have any videos about this or any thought what this can be?

@user-lx1is2wl7i 11 ай бұрын

We have a 1989 Honda Civic 1.5 When the engine is cold or not fully warmed-up, the throttle tends to pulsate at lower RPM's in the first 3 gears of 5 gears. Car has much less of the pulsating once fully warmed-up. Any idea what is causing this problem? I will test the propane method when the car is cold. Is a water hose and sprayer on the ready OK if a flame should arise?

@brennanm1858 5 жыл бұрын

Thank you man. Super helpful

@newfieledman9164 4 жыл бұрын

i noticed that my Power Brake Booster Vacuum Hose soft when i pinch it with my fingers is that normal and the spring clamps on that hose are totally rusted the problem that i am having is the power brakes go from hard brake pedal then back to power brakes again this happens once ever so often, but now it happens like 2 or 3 times when i drive the Brake Booster Check Valve is original i have never replaced it on my 2006 Pontiac Torrent 3.4L v6 sents new milliage is now 222,100 kms on Vehicle i live in Canada.

@DEInTheGarage 4 жыл бұрын

It should not be rock hard, but it should be rigid. Might be worth it to replace it

@masterandpet903 6 жыл бұрын

lol shit. all i needed to do was see a screenshot of a propane torch with a hose on it and i was sold. no need to watch the video. DONE. got it. understood. brilliant.

@nathanwhitecotton6350 4 жыл бұрын

I like the idea it's easy it's cheap and does work 👍 I have personally used on my Tahoe and seen it's done....... Keep it up

@sierraadams8009 Жыл бұрын

So cool I accidentally found this tip. Thank you!

@josephhutzler9667 5 жыл бұрын

Very direct and educated!

@mnmplays8706 2 жыл бұрын

I replaced the spark plugs on my 2008 kia sedona, and had to remove the manifold to do it. Is it more danger to spray around the manifold than it is to spray a rubber hose with propane? Thanks for your help.

@pingpong9656 5 ай бұрын

I really like the idea of only doing small bursts of propane - that makes it so much safer, as it dissipates quickly. Golden Tip, if you don't have a smoke machine.

@z4u68 4 жыл бұрын

what about the stethoscope with the metal rod taken off. you can hear the leak, its safe all the way around?

@ceciltrane5418 2 жыл бұрын

I agree with the reasoning. Propane has and ignition temp of 900° to 1100° that's about 200° hotter than any thing in the engine bay other than a stray spark. On a hand held propane torch, you have a valve to cut the fuel supply to an accidental fire. Or you can remember since you are holding the torch in your hand already, just remove it from the vehicle. Flammable liquids ignite at common engine temperatures, and you can not control or remove the burning fluid if it ignites.

@ptaweston 5 жыл бұрын

What about a smoke machine for leak detection? Any thoughts?

@DEInTheGarage 5 жыл бұрын

Yea, definitely a viable option well. This is just another interesting option

@rh1011 6 ай бұрын

The propane method is pretty good, however if you have vacuum leak from something like a low torque gasket or seal you won’t notice an RPM change. That requires a scan so you can watch fuel trim for change at the same time your testing with the propane. The best thing to use is a smoke machine. Also if you’re using propane method on a carbureted vehicle then the RPM decrease when you hit your leak with the propane.

@JorgeFlores-ii8lq 3 жыл бұрын

I replace the 4 o2 sensor , purge valve, mass air flow sensor, intake gasket , and fuel composition sensor and I still get the P0174 and P0171 codes on a 2012 Chevy impala Do you have any suggestions?

@diggabledork 5 жыл бұрын

Subscribed on the strength of this video. Thanks for sharing your knowledge. Bonus points for your positive response to the suggestion for pressurizing the system through the intake. Looking forward to checking out your other videos.

@DEInTheGarage 5 жыл бұрын

Thanks for the feedback! Glad to have you as a sub. Hope you like the rest of our vids

@reidcoleman1568 2 жыл бұрын

Also subscribed. Great informative video. 👍

@edd2ds 5 жыл бұрын

Testing for leaks with propane starts at about 7:21 for those who want to learn how to do it instead of" why other ways aren't good". You're using most of the video to tell how not to do it before you get to the testing instructions.

@kellismith4329 Жыл бұрын

It’s all good info, the average person doing this may not consider safety and it can get ugly fast when stuff flares up

@darrylthurston4336 5 жыл бұрын

I used to use a nonflammable electric contact cleaner on snowmobile crankcases to detect vacuum leaks. While idling the engine rpms would drop off the instant the spray hit the leak. This might be useful here too.

@DEInTheGarage 5 жыл бұрын

Yea, that sounds like it would be perfect!

@maxpercer7119 2 жыл бұрын

"nonflammable electric contact cleaner " name of product?

@joshuaatkins5197 7 ай бұрын

Not all brake cleaners are good for Plastics and rubbers so keep that in mind. But carb and choke cleaner is safe to go onto plastic and rubber. Edit.. never mind you covered it, awesome!

@queenkong48 4 жыл бұрын

Actually, Propane can pool as it is heavier and air and will settle at the lowest point that it cannot escape. This includes under intake manifolds etc. Not a big worry but would be a good idea to run a low flow fan to keep the gas moving down under the engine bay,.

@TheMrChaddles 2 жыл бұрын

Yep this is true. Was wondering if anyone would comment this.

@johnpopzgrace1900 11 ай бұрын

Awesome video!😊

@kebabsalat 6 жыл бұрын

what I do is remove the intake from the air filter, jam a plastic cup with a tire valve drilled into it, and just pump some air in with a compressor, without the car running. best solution to date

@DEInTheGarage 6 жыл бұрын

Wow.. that is an incredible idea. I am definitely going to try that. Thanks for the knowledge!

@kevykev38 5 жыл бұрын

Remove the intake from the filter??

@sarobinson56 5 жыл бұрын

@@DEInTheGarage Do THAT video now, bro.

@DEInTheGarage 5 жыл бұрын

sarobinson56 It is in the works. We are anxious to try this. Keep an eye out for the vid

@5jjt 5 жыл бұрын

Could you be more specific please? When you pressurize the engine, are you using something other than air? If you're just using air, are you spraying soapy water?

@chadrogers4635 Жыл бұрын

The best and safest way is the smoke method. You connect a smoke machine (can be rented from most auto parts stores) to the engine through the intake by the air filter. And it's all done while the engine is off. The smoke will come out where the leak or leaks are. No worries about a fire or damage to any components on or in the engine. Plus this is the method auto technicians use. And it is more precise.

@eazthitman 3 жыл бұрын

Great video and great idea, I am looking for air leaks in my diesel fuel line. Do you think it would work for that?

@DEInTheGarage 3 жыл бұрын

I do not think so. Different principles are at work with fuel lines. I think in that case you will just need to inspect the heck out of the lines

@eazthitman 3 жыл бұрын

@@DEInTheGarage thanks, its a nightmare job.

@colinspencer2125 Жыл бұрын

Well Done! Great description.

@m2003h 6 жыл бұрын

Never thought of that that's pretty damn smart

@leonthagreat1347 5 жыл бұрын

@sharloncarmody6246 5 жыл бұрын

Thanks for the information.. Question? Could you use Argon? Its not flammable, displaces oxygen, so would that work to check vacuum leaks?

@DEInTheGarage 5 жыл бұрын

I believe you could, though I have never tried it.

@edwallenborn5049 4 жыл бұрын

Excellent info, thanks!

@loudawg907 Жыл бұрын

Great video thanks man

@donfu2795 Жыл бұрын

As for the soap and water technique. To make it work you hook the output of a shop vacuum to the TB and open the throttle wide. This will pressurized the intake system. Then spray on the soap and water solution. The outflow of are from a leak will show bubbles like a hole in a pressurized tire. This technique has many advantages: Very safe - no fire extinguishers needed. Shows exactly where the leak is occurring. Done while the engine is cold so parts dont have a chance to heat up and seal the leak. If you are worried about getting water getting on electrical connections, dont worry about it - all the connections are IP67/68 rated for water ingress, and a low pressure spray will not cause *any* issue.

@azimmey 4 жыл бұрын

Awesome beard. Thanks for the video.

@dbknockout2266 4 жыл бұрын

Hey bro thank you for this. Question...I am not familiar with propane and this may sound stupid but can I use one of those cans of propane. You know the one that looks like a can of spray paint size

@gabrielkishinevski1473 2 жыл бұрын

Good video. Thank you.

@tomo4690 5 жыл бұрын

Good info man... would of liked to see a live demo of the propane test. Thanks for posting.

@kellismith4329 Жыл бұрын

Go and spray some in your car’s intake and you will learn the sound

@james4349 10 ай бұрын

Thank you good looking out

@FMSTheWord 8 ай бұрын

when I first saw the propane, I thought you would feed it into the system like smoke and check for the odor, lol, your way is much better!

@victoriabowers4768 Жыл бұрын

Awesome Video!!!

@kennedywong9854 2 жыл бұрын

I am hearing loud pitch noise while doing compression tests on cylinder 2,3, and 4. Is this vacuum leaks?

@nickolasgiampietro3164 2 жыл бұрын

What if you don't have vacuum leaks but you have bad solenoids that test well on the table but not in the engine? Having issues getting full 20psi due to something in the vacuum system

@jesseanderson1500 4 жыл бұрын

Jesse Anderson Thank you, great lesson

@CarlosGarcia-ls4hn Жыл бұрын

I know it has now been five years since you did this video, but I hope you are still monitoring it. Can you tell me if your method with the 1 pound propane bottle and hose work to detect a vacuum leak on an intake manifold of a Harley-Davidson motorcycle? Thx.