Symptoms of a Bad Intake Manifold Gasket Leaking and when Replacement is Necessary

In this video you will learn symptoms of an intake manifold leaking and causing vacuum leak. You will also know when replacement is needed when it is bad and should be fix. If you hear a hissing sound or experience hard start, no start or stalling it is time to replace it.
Top5autorepairs
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[@CJ-ej6sk]

Straight up and to the point. No life stories or history of the things that nobody cares about. Just facts that pertain to the point of the video and no wonky footage. Love it! Keep up the great work!

[@therenegade1735]

Tis Guy is a Real mechanic.... and has the real intention to help people.... Thank you Brother.... Happy Thanksgiving...

[@Top5AutoRepairs]

Happy holidays!

[@kiiinglouiexxii]

I got happy when he read my code 💯

[@MarkRayBeach]

I absolutely agree. Always concise, to the point, and no bs. An amazing depth of knowledge on the topics. I feel like I’m sitting in automotive school when I watch his videos!

[@drakeydotmpeg7890]

Fucken oath

[@TheMarcucio]

Literally just liked and subscribed because you know your stuff. I was getting P0300 and P0405 but the egr is deleted when it was rebuilt. Coils are good spark plug wires are good and new spark plugs installed. Today when I was inspecting with it on I gave it a rev and I could hear air being sucked in somewhere from the front of my intake manifold. The reason why I think you are right is because I’ll have really rough idle when completely stopped and she will miss fire and you can feel it

[@Wild2009vids]

This makes total sense! P0171 code is popping up and I have hissing sounds, and RPM runs ups.

[@doom0d1]

I've had a vacuum leak for a little while and tried propane on the vac lines with no results, pushed everything right together and nothing. Then one of the guys at work said it's probably the intake gasket. Well, it seems to be the issue, your symptoms match exactly. Keep up these videos. Not enough people know how to fix their vehicles anymore. This is just an issue I haven't had before

[@DavidGarcia-rn6zj]

Finally a video on this ! Been looking for videos and no one posted, I have a 2001 Camry 4cyl I replaced it but I think I might have not torqued it right, it has a rough idle when cold start, I’m probably gonna replace it again and hope it works

[@nmartin5551]

SUPER VIDEO!!! To the point!!!! Helpful even for those of us who aren’t super mechanics!!

[@Super_Sport_Marc]

Bought a 2005 tahoe from a pretty shady guy almost 2 years ago. Went to drive it home and it cut off and wouldn't stay running. Flash forward a year and i chased down everything related to random misfire that you can think of. Even put high flow cats on it. Found this video and it made perfect sense. The manifold gasket is the only thing i didn't think of. Changed it today. Haven't run it but im confident the gasket was the problem the whole time

[@aloiba100]

So what happened cliffhanger

[@Super_Sport_Marc]

@@aloiba100 been too busy with building my 86 ss ttop to take the Tahoe out to test it

[@missincredible6087]

We need an update ! 😂

[@andylevingston16]

@@Super_Sport_Marclet us know

[@joelf5830]

Thank you top 5 auto repair for posting! Here is my experience...on my daughters 1999 Honda CVR she was experiencing a high pitched whistle sound once the SUV got warmed up, most definitely was a vacuum leak somewhere. Process of elimination I was able test all other hoses for vacuum leaks and nope...so the last possible leak had to be the intake manifold gasket failing. It was a pain to get the intake manifold off and even harder to scrape the 25 year old baked on gasket off (surface has to be completely flat for new gasket to seat properly). FYI, drain the radiator fluid first, and use a clean container if you are planning to reuse the fluid, otherwise alot will spill all over when you pull off the intake manifold, and most likly you will get some fluid into the engine itself and you'll then you'll burn white smoke out the tailpipe. The only way to get the radiator fluid out of the engine then is to do a oil change! Also, if you don't seat the new gasket and the manifold on just right when you reinstall it, you'll still have a vacuum leak and a very fast idol, fix that by losening the manifold again and reseating it. Once that's fixed, refill the radiator with fluid and check for any fluid leaks around the manifold and tighten bolts more if needed, if all is done right the whistling should be completely gone

[@saidaker9472]

Thanks sir, we need this type logical explanation . Not a long lecture, thank you.

[@abdouliejallow7642]

bro u a star really appreciate for your knowledge and patient

[@shawnmatthews573]

Thank you so much for this valuable information . I definitely need a manifold gasket .

[@mryony23able]

Thanks for sharing your knowledge my friend.❤

[@carlosmuler4773]

Very interesting and helpful information.

[@thesuzukiguyinkampala6873]

This guy is a real life saver

[@beexiong2171]

i tried everything bro...i am gonna get the intake manifold gasket replace next ! thanks.!

[@notjustanygeorge]

Great video, helped me out massively!

[@blkjae120978]

He's definitely on point. I recently bought a 2006 Volvo XC90 4.4L V8 and supposedly they changed the MAF sensor. So I'm guessing it's new. I'm getting a lot of carbon build up and poor power and gas mileage. I'm going to change the MAF sensor and use Sunoco gas. Hopefully this will help a little bit. Next, would be to change the intake gasket to cure the air ratio.

[@rosemalfabon7276]

Thank you so much thats so cool I had to learn the hard way you hit the nail on the head. ❤

[@srl2677]

Another great video 👍. Love the channel.

[@turadura6620]

My Windstar didn’t have any of these issues except slight oil in coolant reservoir. After taking apart found lower intake gasket was leaking a bit.

[@michaelpelzek8882]

Awesome video man thank you!

[@fieldsofomagh]

Good to know these symptoms while trying to track down a faulty engine.

[@woke1340]

Great information!

[@beepee9095]

Thank you my man I Def hit that like button!!! Spot on!!!

[@WinningWave360]

Thank you for you videos, You Rock!!!

[@nyacoustics8373]

on my 95 lexus sc400 v8 the engine has a rough idle and sputters. There is also a noticeable hiss by the front of the intake area and the IAC valve. I have a check engine light on. When I press the gas the rpms on the tach go in the wrong direction. they go down instead of up like a vacuum leak or something. so far i put fresh gas and cleaned the throttle body out which was very dirty with carbon build up. that cleared the check engine light however after 30 minutes it came back. when i smoke tested the engine i did have small leak between the egr solenoid and egr valve body. however there is no gasket there. only a gasket between the valve body and the intake which looks fine. what could be causing my issue?

[@philtolfreeart]

Thank you man! This could be my issue...

[@tjconley6278]

Thank you for this video!

[@juhadexcelsior]

dumb question, but would kseal be a good temp fix for bad gaskets?

[@PartyWolf36790]

I heard a suction sound coming from the bottom or my suv where thats located it might be tat issue but I get no codes and my car smells like pure gasoline and fumes at random times. Car also has hiccups rpm drops and comes back to its steady rpm makes tye car tug or jitter.

[@kchilz32]

Great video

[@michellet_thatsme]

Yup! That must be my issue lol. Thanks!

[@user-lx1is2wl7i]

We have a 1989 Honda Civic 1.5 There is hesitation in the throttle at lower engine speeds. Seems worse when the engine is not fully warmed-up. We have none of the symptoms mentioned, but perhaps still an intake leak. Any thoughts?

[@NJRt461]

I have watched hundreds of auto repair youtubers and feel you are the one of the best👍👍👍. I am fixing a 01 MDX with engine hassle noise when acceleration. There is no DTC code but I suspect the minor vacuum leaks (running lean) somewhere. I used propane gas to check all hoses and vacuum booster and found no leak. So is it possible the manifold gaskets are leaking? May I use propane gas to prove that? Thank you.

[@Top5AutoRepairs]

Yes propane will work just fine

[@jakekleine9179]

Question: if it passes the starting fluid test, does that necessarily mean it's good or can there still be a problem with the gasket? Thanks!

[@405ruben]

My 98 Acura 2.3 CL struggles to start only upon cold start, have to keep the rpms up to keep it from stalling. Once it gets warm it runs fine and no misfires, could this be a intake gasket issue? Gasket expands as the engine gets warmer and seals any leaks it has when it was cold?

[@ronmailloux2386]

When I spray cab cleaner around my intake manifold I get the engine surge/stumble. This is when I first start the engine. Quickly as engine warms I can spray the same spot with zero effect. What does this mean, should I change the gasket? 171,174 codes.

[@Floral_ceilings]

I have a 93 Chevy and I don’t hear a hissing sound but it idles and runs rough and would accelerate on its own at times and now it just doesn’t turn on at all, I cleaned the throttle body and replaced full pump and many other parts, can this possibly be it?

[@NiktoPH]

My car has no problem at higher speed but also at idle, its maybe little rough but no code, no stalling, nothing. But on MOT, there is high O2 % and lambda at idle az 1,8. Exhaust checked and no holes. So it could be intake gasket ?

[@rickygarcia9327]

so i just recently cleaned my throttle body on my 05 gmc sierra 5.3 just because i had no check engine light on for it or anything so after i cleaned it i installed everything back the right way and did the 3 minute idle learn well tried now when i turn it on it warms up good but once it warms up it starts to surge the rpm goes up and down then when i put it in reverse or drive it revs up and going into gear or to reverse whatever im doing when i drive it and step on it it feels good i feel good power but as soon as i let go the gas now it says reved up or accelerated then once i come to a stop it kind of goes down and just starts surging again do you think this could be it or what else do you think it can be i replaced air filter cleaned my maf sensor do you think this may be the cause of that ?

[@balsonnaoshekpam6240]

Thanks

[@armygreenfj3924]

Will this also cause a coolant to mix with oil?

[@DIYLifeSkills]

Yup, I hear the clear hissing sounds right at the mating point of intake manifold and engine block. I had to replace remove the intake manifold to fix the rear valve cover gasket on Toyota 3MZFE engine, and oil leak is now fixed, but I have a strong hunch that intake manifold (with new gasket) is not sealing air tight.

[@Top5AutoRepairs]

Bolts need to be torque.

[@DIYLifeSkills]

Luckily for me, it turned out to be PCV hose that was unplugged from intake manifold side.

[@DIYLifeSkills]

@@Top5AutoRepairs bolts are torqued, just the PCV hose slipped out on the intake manifold side when I was connecting it to PCV and since it’s not visible even day time, I had to use my fingers to reach in to confirm that hose slipped out.

[@Top5AutoRepairs]

Good thing you caught it 👍

[@florenbaron7111]

After a lot of troubleshooting and research, I think I have a similar problem but coolant is also being sucked into the combustion chamber. From your experience, is it likely coolant is being sucked into the combustion chamber? Steam is coming out of my exhaust pipe. I don't think it's a blown head gasket. My spark plug wells do seem to have coolant in them. Also, when I first turn on the 2008 Ford Econoline E250 V8 4.6 2 valve, after the van sits foe awhile, steam comes out of the exhaust pipe a lot more but then reduces. I have no DTCs. I had to replace the water pump. Now there is preasure in the coolant system but I am still loosing coolant somewhere. My engine only shakes after the engine warms up. My coolant guage is not working but my scan tool shows the temperature. That van seemingly only has a cylinder head temperature sensor, not a typical coolant temperature sensor. The vehicle barely moves when pressing the gas. I appreciate you sharing your experience with us. Thank you.

[@rolandvaldez8228]

Thanks.

[@theneanderthal6854]

Let me ask you this when warm would this be the problem on Honda element I’ve checked all hoses with brake clean and nothing.

[@callumbuckingham7831]

my manifold keeps becoming loose (studs) causing it to blow, and tips on preventing this ?

[@GrzegorzSawinski]

Hello, can you tell me what the tightening torque will be for the intake manifold bolts in a Mitsubishi ASX 1.6l petrol, engine-4A92, using a torque wrench?

[@Johnes-jh3py]

My car has been having this problem of low speed and harsh start but I haven’t been getting those codes and have been getting p0113 and p2279.Can it still be the gasket?

[@nqubekoshezi3595]

Hi sir please help. I have a 2012 Polo Vivo CLP. Whenever I start the car it idle well then after maybe 1 minute or 2 it shows EPC on cluster the minute it shows EPC it starts misfiring and I have to turn off the key and turn it on so that it will idle.

[@x2.andrew291]

Hi I have a 2015 Silverado and is reduced engine power I change the throttle body and master flow sensor And it was running good than on my way to work it’s started whistling sound And it went back on reduced engine power mode the whistle seems like it is coming out of manifold but iam not sure if it will cause the engine to go in reduced power mode and now it won’t even turn on can you give me a guide on what you think it is?

[@darroncrenshaw51]

My 02 Maxima 3.5 gle auto cranks up every time but, I hear the exhaust leak under my car .Is it the manifold gasket, or the donut gaskets?

[@1jeliaz]

New sub thanks for the great info

[@1jeliaz]

I do have a check engine for code p0430 and p0420 replaced new cats and oxygen sensors do you know if it could be a leak?

[@kyirui2]

How can you tell if its the valve cover leak or intake manifold?

[@albertoa.5070]

Hey nice video man. I have a question. Im having issues with my 2005 Saab 9-5 arc 2.3t. I am getting P0101 code related to MAF or circuit. Before cleaning the MAF, my car would have rough cold start/sometimes stall. It would be fine after starting throught the day. In park and in drive my car idles at 850 rpm. In neutral tho, the rpm drops to 400-500 but then goes back to normal after a second. While driving i also get this odor in the cabin of oil/coolant. I just cleaned the maf, changed the vacuum lines, put new pcv oil trap, spark plugs and valve gasket and the rough cold starts stoped but the neutral idle issue is there, the smell sometimes and the code came back. I had used a odb reader and seen that my map sensor wasnt in range but the map sensor was checked and was good. Could this be an issue causing my headaches, or do i just cough up the money for a oem MAF

[@musicmandz]

hello in my civic 1997 when acceleration to 3500 rpm then release i hear a huge whistling noise , this could be the manifold gasket ?

[@javierochoa432]

2015 jeep patriot no start but cranks over n shoots out antifreeze from exhaust….any ideas why ?

[@ThrasherGnar]

Awesome video, thank you for this!

[@user-qs7gm2rq9m]

I have a 2002 audi a4 3.0i quattro and it seems that I have a vacuum leak from under the intake actuator (pressure tested with smoke) it's not the side vacuum hoses, it literally come from under the middle of the intake manifold.. What could it be? I am suspecting intake manifold gaskets, but then why would the smoke come right from the middle... Any advice? Thank you in advance!

[@danielchetcuti5308]

Hi great video really good tips. Quick question what if the vehicle is a diesel engine? And it could be possible to get code P00BD? thanks in advance

[@timrobison5725]

Is there a way to seal it up without removing and replacing

[@alessioagu]

What is the synthopms to the car when you have a vacuum leak caused by the manifold gasket?

[@chrisshore9000]

Nice video I was hoping white smoke was a sign. I have a qx60 with the 3.5 v6. It started blowing a ploom of white smoke at start ups but goes away quickly. So quick I had to have someone stand behind the car because I just thought it was a cloud going by. I’ve had the manifold off when I changed the plugs 40k miles ago in spring of 2020. Now it has 140k miles. There’s no moisture sign on the dipstick or oil cap. I remember having to disconnect 2 small coolant lines doing the plugs. Hopefully it’s not the head gasket especially since I do all the maintenance when needed.

[@jaybay711]

Do you still need to know what this might be, I can help

[@aloiba100]

Them engines hood on head gasket issues

[@rustysmith-kc6ys]

I bought my uncle a 96 Jeep cherokee with a 318 and its got alot of water in the oil in it. My uncle thinks its the plenum gasket leaking. Could this be it?

[@aloiba100]

Comments made me subscribe

[@jygogaming3550]

Can intake mainfold leak cause coolant leak into the spark plugs?

[@McAdamsMechanics]

Hey buddy. I have a 2003 Odyssey that makes a weord FOOOMP sound like launching a T-shirt out of an air gun. Not rhythmic. Irregular and abiut 5 a minute. Any ideas?

[@sashlinpillay4793]

Hello bro, i have a 2003 polo 1.4 16valve bby engine I initially had loss of power while driving. Heavy misfire and rough idle. I managed to get it home.. fast forward took the head out. Head was fine. Full service. Etc. Put everything back on and started up. But boom misfire and bad idle. Touch the accelerater and she dips to 400 rpms sometimes switches off. Im using this car like this for like 2months. Engine gets very noisy when warmed up. And hard starts only when engine hot. Drives fine of the freeway thou. Sometimes can stall and doesnt rev up. Switch off and on then back to normal. But misfire and bad rough idle. My next step is to change intake manifold gasket.😅

[@qamilselmani7003]

So my car used to reach 60 km per hour on third gear now it wont it asks to change gear at 45 would my speed performance be back cz i really can notice how weak performance it has

[@Navpreet-z1x]

Hi bro i have captiva diesel 2012 and replace the turbo and i ahbe same probelm of noise from turbo. When i remove hose from actuator and noise reduce what can be cause ? Can you help i can send video.

[@steveenczi8967]

Would long starts be an issue?

[@ahmedabdelhaq3992]

Would the hissing noise sound like a whistling noise?

[@trevorstieger6762]

I have a poobd code. Can that be intake manifold related?

[@rafaeltamayocerda5947]

2002 Honda Accord 2.3 Motor my RPM’s go from 1000- 2000 up and down, changed AIC valve, and it still does the same.What could it be 🤔

[@nolove5062]

Mine had gave out just now knotice coolant leaking out from both sides was only replacing water pump but its gonna be both gaskets now

[@bennytix1035]

Is it risky to drive when the intake manifold gasket Light it on for the engine

[@WarHawk919]

My rpms go up and then down with a 'wheezing' noise when it's idling. And my truck is overheating as well.

[@nflyoungboy1181]

Will this cause p0401 Egr code

[@MrBodean2010]

I have p0171 p0174 on my 01 towncar. Hards starts slow acceleration, slow going up hills.

[@ricardojimenez9082]

What if there is smoke coming out of the exhaust manifold?

[@genep.6008]

Where are you located?

[@theycallmerosie7]

Can this cause an antifreeze leak

[@khalidkfy7368]

Thank you for viewing 🌷👌👍✨️

[@selfmade128]

Can a bad gasket cause coolant leak into ignition coil?

[@robertbarnhardt9792]

I been in the same area

[@compagordo9134]

I hear hissing when turn my car off it's fmgot a p0302 code and the hissing sounds like it's on the side were cylinder two is on it's a 05 marquis qith the 4.6 infamous for leaking intake manifolds

[@InsomNinja-ut9yb]

Can you drive on it for a day?

[@seniorwill]

I don't have carburetor cleaner and I used water it's work also. ✌️

[@jersey_queen9356]

I have the P1101 code which is a pain to diagnose. Recently had a diagnostic test as they said it’s the intake manifold gasket. I have no issues but loss of gas mileage and now a coolant leak in the passenger side tire. Would the intake gasket be the cause??

[@ShieldandBucklerMusic]

what kind of car is it? did you get it fixed?

[@cognac8297]

Cars with map sensors equate for the intake manifold pressure leak and yah know gives you time to deal with it later.. Dont matter. But maf sensor is before air enters the manifold. With the maf sensor intake leaks are bad.

[@blazzewolf5458]

I got a 2.0 tdi, it makes hissing sounds when I accelerate, starts harder, and it goes into limp mode when I get over a certain rpm, usually 3500 in 5th gear usually, it does not have problems for example in 4th gear ar 4k rpm, could it still be the intake manifold gasket?

[@papiescobar2769]

Probably mate if it’s not your boost pipes

[@memmix5523]

is it possible for water to get into the engine causing milky oil as well? no white smoke from exhaust but performance its bad and milky oil dont think its head gasket perhaps a combo of bubbles in cooling system and leaky intake manifold?

[@Realofficialdee]

Oil cooler or headgaskets

[@highbrass7563]

I have a 1997 Buick Century Limited with the 3.1 Liter Engine that is Notorious for its leaky PLASTIC intake manifold Gaskets. Why GM though plastic was a good material baffles me. I have 140,000Km On the car and fortunately, the car was ell enough maintained that the gaskets don't yet require fixing. In the spring I will pay to have the gaskets changed over to a proper Fel pro copper gasket that will outlast the car

[@SuperAPGC]

Just have a question my 93 Miata seems to be leaking coolant around a manifold bold. would a blown manifold gasket cause that and word helps thank you😊

[@Top5AutoRepairs]

Yes it's possible if there is a coolant passage

[@SuperAPGC]

@@Top5AutoRepairs thank you there sure is ill give it a check tomorrow

[@BigHomie030]

I’m getting white smoke sometimes and rough idle. I changed the mas air flow sensor and also the valve cover on the driver side. But still getting smoke at times and oil consumption so what could it be

[@Realofficialdee]

Could be piston rings

[@elapache8893]

Hey can a intake manifold has gasket tiny leak, can it cause a po420?

[@Top5AutoRepairs]

Nope it can't

[@camlobesvtec]

I squirt some crc throttle body cleaner in the area with the engine on. If its leaking you immediately hear the change in idle. Never perform this with a really hot engine for some fire safety. I torqued it a lil more with a new gasket and no more leaky leaky.

[@jpn234]

Do you hear a hissing sound?

[@PEDROPLOMO]

Can that cause the airflow sensor not to read?? Cause i bought a new original sensor and my car doesnt read it what i hear is a whistling sound when i drive

[@Top5AutoRepairs]

Correct. If there is vacuum leak this can cause Improper reading.

[@XxPuffyWolfxX]

So im rocking a 98 ford ranger 3.0l ovh so i do hear a hissing noise. Ive checked all vacuum lines and sprayed with brake cleaner for a change. Its difficult to get in between the intake manifold gasket because its in the middle of the engine. So i could never check. I do have an OBD scanner and have seen my bank 1 sensor has always been reading lean, i stall when pulling out my clutch trying to ride into first, so i need to give it a bit of gas. Its a rough start with a high rev. I think i found my issues but wont know until i pop it apart. Also no codes so it must be small enough to not cause a CEL. But enough to make my IAC valve compensate