Thanks Daniel, nice for you to share all that with us. Before I used carb cleaner or starting fluid, but brake cleaner is the best and, of course a scan meter, listening and watching where the vacuum leak is. The throttle body seal is notorious for vacuum leaks. -We all appreciate it. 😀

Im so glad to find your video, even the other one on my exact car, corolla 2004. Thank you for your input I can't wait to try it out!

Very informative! Thank you for uploading the video!!

Legit AF! Sprayed brake cleaner in the same spot and white smoke came out of the exhaust. Don't know how to say this but, I love you.

@akob8169

3 жыл бұрын

I got the same problem how did u fix N how much it cost u ?

@namnug69

3 жыл бұрын

@@akob8169 you have to replace the intake plenum boot. At least that's what fixed mine. The part cost about $30 and it took a couple of hours. I followed a KZread video step by step with no problems. When I removed the old one it had a huge hole which was the vacuum leak.

@ryanwilliams9854

4 ай бұрын

​@namnug69 I put a new starter on my 01 deville an replaced that intake plentum with a new dorman one an its not getting a tight seated seal an causing my engine light to come on an its running crappy

I believe I got this same problem after getting OEM coil packs, boots, and spark plugs. Problem isn't fixed after all that need to try this out thanks for posting this trying to get my car back right soon.

Excellent vid, thanks very much!!!!!

Awesome video Thank You!!!!!

THANKS!! I shall use this to find the leaks in my rusted out brake lines

@rajachampatiray3398

3 ай бұрын

No you shall not

GREAT VIDEO

Nice video! I appreciate the info...Thanks for helping me find that leak... Now i got to pull the intake off to get to the throttle body coupling boot/gasket... Quick question... How would you take off the idle pulley on a 04 cadillac deville? I can't get my hand or socket/boxend wrench in there... I need some advice on how to attack this

Such a nice engine when it's running right, a total nightmare when it isn't. For shame GM.

@nathanaellensch2894

7 жыл бұрын

its not even gm. its a cadillac with a northstar

@amberlynn6914

7 жыл бұрын

Wyvern Cadillac is owned by GM.

@nathanaellensch2894

7 жыл бұрын

But gm didnt build the motor now did they

@wyvern4588

7 жыл бұрын

Nathanael Lensch I don't know if you are playing stupid or genuine stupid, GM designed and made this engine for Cadillac- GM's high-end luxury line of cars.

@nathanaellensch2894

7 жыл бұрын

cadillac is owned by gm. they still build their own motors. gm does not build them. cadillac does. gm builds chevy gmc and buick only

Thanks for sharing 👍

If I'm remembering correctly my 98 Aurora with 4.0 Northstar had a backfire valve under the plenum, kinda like a spring loaded butterfly valve and easy to locate on my engine as the leak caused it to whistle........ I love the Auroras have two of'em and made the 98 with 305k miles a parts car for the 96 with 60k miles.... Honestly couldn't afford to maintain the Auroras if I had to pay someone to repair them! I'm a novice/parts changer, I have the "3" GM repair manuals and real mechanic's on the web to help so Thank's..... Love the cars but they're maintenance nightmare!

7.14.16. Those plastic upper plenums have caused a pleathora of headaches for owners!......i.e......GM 3100/3400 & the venerable 3800. If you change the lower intake manifold gaskets to the metal framed ones, & flush the infamous DexCool from the cooling system, you will go along way towards an extremely long lived engine. A very informative video! 👍🏽👌🏽😎

@zuone3573

3 жыл бұрын

Sorry.bit confused. So dexCool bad for northstar? Or should i use Dexcool only for my showroom condition 96 deville.with 90k on it.

@stevensapyak7971

3 жыл бұрын

@@zuone3573 11.14.20. The original DexCool®️is touted to last 5yrs/150k miles....it is A marketing ploy by GM™️,to make their vehicles appear to cost less to maintain over a certain amount of time for the owner. It doesn’t work out that way in the real world! If you go no more than 3yrs/50k miles you will be OK with using DexCool®️, but I just change mine with the mixes with any type of antifreeze, and change it every 2yrs/30k miles. If you look in side of your coolant overflow tank and it looks grungy and not orange colored, it’s past time to drain and flush your radiator and cooling system.

Quick question. I have been watching your videos for a while now. And I have seen that you have worked on GM, Ford, and Chrysler products. All of which were still under factory warranty. So I am wondering how this is possible since each vehicle would go to the dealer for warranty work, how is it you are able to work on each one?

@1:50 that first line you disconnected. What is that? My 2000 deville has it plugged with zero hose coming out

Hello Daniel have you noticed any more over all power in your new motor compared to your old one?

Thanks Cool Video

Need to invest in a smoke machine snap on makes a good one. Find vacuum leaks super fast

will this problem come with a little smoke ocassinally from under the hood and over heating

If a car has any leak can that cause it to become sluggish sometimes ,like in heat ?? Thanks !

Thank you i just found the same problem

Good video.

Thanks man!!!!

whoever changed that throttle body wasnt paying attention

So you say it is between the manifold and throttle body...so is that not a throttle body gasket that needs replacing?

What a beautiful car. Someone needs to take it out, and drive it hard to get rid of that carbon rap. Notice no spark plug wires as the coils are on top of the plugs. I have a 1996 Northstar in my showroom Deville. Hope they change the coolant every 4 years to keep those headgasket threads healthy

Nice video.

Are these Devilles with the Northstar engines known to have those vacuum leaks mine is a 2003

what was the part called to replace?

Which scan tool do I need

its odd it still drives without missing … my 96 DEVille had the 1074 codes . and the prob turned to be maf even though I cleaned it and it wasn't a direct maf code but that was the prob.... it was still the bad piece .20 plus years old ... I ws thinking the intake gasket changed that .. the plenum boot are notorious ..im glad I don't have one on the 96//.the engines are great without the codes … learn alittle on diagnosing it is a must ..you will narrow the prob down ..I hate to just throw parts after parts not having a clue . just do a little internet research ect..//

i have the same exact craftsman scan tool how do you go about getting dynamic date while the engine is running? thank you in advance ( if you have time) and also I am a big fan of your videos. take care!

@user-ny7yr7fk8i

Жыл бұрын

Whats the scan tool model?

Good job.

I've seen multiple of these boots fail

This the same my friend that is an auto mechanic told to do too to find links

i have used an unlit propane torch to do this. when rpm increase you are near the leak.

@fukkawi

6 жыл бұрын

Brian Thanks I'll give it a try. Finally, Finally, found a vacuum leak that causes rough idle and stuff that 2 mechanics missed. Can't wait to try the propane torch test.

So instead of removing the manifold can we just remove the throttle and replace gaskets? Or whatever it was that was affecting that side.?

@user-mf4ic7wb5u

6 ай бұрын

I’m just saying which would be easier/lass work

My only issue with the video is .... why would you order and install a maf sensor that was recommended by a part store with out running diag and proving or eliminating that as a probable cause?? I mean part slingers rarely even get me the correct part even when you give them the engine code or vin number. Why leave that to chance?

@My-Pal-Hal

2 жыл бұрын

Well. That particular part covers an Extremely Wide Spectrum of GM Products. So concerning that particular part. It's probably correct.

I found the problem, it's a Northstar V8.

@68camarorsss33

7 жыл бұрын

The Laughing Philosopher *and guest lol so true!!👍

@keaganbutler7924

7 жыл бұрын

The Laughing Philosopher *and guest they aren't even bad engines

common issue on the Northstar 4.6

what is that replacement part called? Please help... That's what is wrong with my 95 cadillac eldorado

@mariovillegas90

7 жыл бұрын

wendy stark kinda of late but plenum duct.

@wendystark7413

7 жыл бұрын

Mario Villegas thank you. I finally found one on Amazon.com

Why dont you just use something like carb clean or starter fluid? That would run cleaner, right?

@TheWallyjp

8 жыл бұрын

yes you can, but brake clean does not leave a residue

@DanielJaegerFilms

8 жыл бұрын

You're right, it would run cleaner, but unlike brake clean, it will leave a residue on other engine components while spraying for the leak.

@johnnyg5476

3 жыл бұрын

Brake cleaner dries out seals and should not be used to detect leaks. Carb cleaner and or starter fluid would be a better option.

pcv leaking?

Cadillac DTS PURGE VALVE CODE. misfire, lean. Now it's crank no start.. The stalling is after fuel pumps turn on and humms.

I have an Eldorado. I have to do this job every 2 years. The mice. Chipmunks and squirrels get into the valley pan where the starter is and chew the wiring and rubber plenum boot. So when it’s starts to idle rough or a screaming high idle. That’s the problem. I Bitch to the neighbors to stop feeding the rodents.

Where are you located ?? Honestly if I have an issue with my car I rather have you look at it cause this mechanic shops I don't trust at all or my dealer

@edwardmyers1746

7 жыл бұрын

Alberto Leon i think texas

@albertoleon4754

7 жыл бұрын

Edward Myers darn!! I'm in California

@albertoleon4754

7 жыл бұрын

Gryazev-Shipunov I've been having issues with my car where it jerks when accelerating I've had this issue since I purchased it no engine light is on I've taken it to the dealer and they said they can't find an issue and nothing is wrong. They told me it's normal but the jerking is so strong at times it throws you back and fourth on your seat at times I really need help I have no clue what's causing it and I don't want to be spending money if I don't have to

@taredrickmiller861

6 жыл бұрын

check motor mounts

Burn that engine down

that godawful rubber boot between the coolant crossover and the manifold wasn't one of the better design changes GM made to the N* in 2000. The earlier design with the TB mounted directly to the intake was better (had coolant hoses to the TB to prevent icing). Somebody probably changed the starter, by the book, and tore the boot; it's best to unbolt the 3 throttle body bolts and slide the manifold straight up with the plate and boot still on it.

@TATTDIS

2 жыл бұрын

Does the intake manifold have to come off for that? I've been having horrendously high idling lately.

@BigBoy4005

2 жыл бұрын

@@TATTDIS depends upon the year; prior to 2000 it does not

The rodents luv to gnaw on that plenum between the throttle body and intake manifold. Had to do mine twice so far. I just turned 70,000 on a 01 Eldo

is it me or does it sound like that engine is lightly knocking?

@aaronjones8341

8 жыл бұрын

you're not the only one

@RyGuyLikesFrenchFry

7 жыл бұрын

Mine makes the same odd sound.

@edwardmyers1746

7 жыл бұрын

Ricardo The Computer Wizard its part of gm so youll hear the knocks like a chevy engine and it is a 32 valvue 4 values for 1 cylinder so there is alot of moving parts

@geminijtwa29

6 жыл бұрын

Mine make that noise too...

@genegeneish

5 жыл бұрын

If its cold you get a little ticking. Once valve train and pistons warm a little, noise goes away. Ive got 140k on my third n*. And its one of the cleanest eldos you'll see.

Dan it don't take long to fix n u can make some money for your toys buddy

why not use water??

@abyssunderground

8 жыл бұрын

If water enters the engine that's bad, very bad. If it gets into the cylinder you can destroy engines very easily because water doesn't compress or burn. Not to mention the issues it might cause with electronics if they get wet.

@Adam-bw4lw

8 жыл бұрын

abyssunderground yeah but that amount of water arent hurting an engine(no hidrolock),you dont have to get water over the conectors:)))

@abyssunderground

8 жыл бұрын

Perhaps not in small quantities, but water also wouldn't affect the readings he was using to diagnose the issue since it doesn't burn.

@Adam-bw4lw

8 жыл бұрын

abyssunderground but in the other end you hear the engine changing rpm when you hit a vacum leak:)

@cebruthius

7 жыл бұрын

Tool Guy, more like Cocaine Guy

first

I hate CADILLACS

@filthyanimal874

4 жыл бұрын

MAKING BAKERSFIELD GREAT AGAIN, all homosexuals hate Cadillac’s.