How to Bleed Coolant, Remove Air From Cooling System
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- Опубліковано 14 лют 2020
- In this video we will cover the basics of bleeding a cooling system. Bleeding a cooling system is needed anytime you open up the system and perform a repair where any amount of coolant is lost from the system. Please like and subscribe if you enjoy the video
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Thanks man!!! You told me how to do it the right way!!!! Gracias!
Excellent information. I'm about to tackle replacing the radiator on my FX
Finally, I was glad to see a real mechanic giving good and appropriate advice I just saw 3 videos from (poor) 'backyard' mechanics who are giving advice when they need some serious advice and schooling themselves. Unfortunately, misleading those who may not recognize their quite limited knowledge.
Thanks.
Damn good video and you explained everything thoroughly
Your Midwestern accent is amazing.
Awesome Peter! Thank you bro!
This video helped me out a lot after i found out i needed to put in a bleeder valve to replace that stupid plastic piece that the coolant runs through which cracked and caused me to lose all of my coolant, thus bringing air into the system. Great video and really helpful
Same with me but instead I replaced it with a metal one
Is this the process you did to bleed the system? And when you turn heat on your car does it blow hot air ? Because mine does not only regular temp air
Good work my friend Thanks!
GREAT VIDEO!
This is tge most detailed video i have watched... thank you so much... very helpful.
should the overflow coolant reservoir bottle be full of antifreeze before starting the process?
Excellent video
Thank you!
this is exactly what i needed thanks!
well explained...thanks!
Nice explanation bro
Thanks for the video
Master piece video
I have a few infiniti's including Q50 and FX45. My nissan Frontier SE CC 6 Cyl bottom hose was not getting hot and always cold. I Changed Clutch Fan, Thermostat, Antifreeze, bled the system and nothing. I eventually came to the conclusion that the Radiator was either bad or clogged up, Sure Enough I take Radiator to a Radiator place and asked for a cleaning of the Radiator "$25" Pretty cheap. When I went to pick up Radiator I spoke to the person that unclogged it, he said it was pretty clogged up, put radiator back on, added Radiator bled the system and Viola all is well and the needle is always less than half way 🤗. Mind you my Frontier is in Blazing Hot Puerto Rico as it is my Vacation Truck, yet my engine runs cool at all times. A simple air bubble in the cooling system can cost you lots of money if you let it get overheated.
Thanks for sharing, I will be working on my Q50 which was low on Coolant.
Well done pal nice introduction for new Techs . Keep it up Pal
Thanks 👍
Good stuff, much easier on our MDX than my 370z lol.
Perfect video
Glad you think so!
Do you need to add more coolant to the reservoir after?
Thanks buddy what’s the procedure on the w212 M157 engine after new coolant fill up. Thanks.
Last time I did this - I had over flowing coolant all over the place and expansion tank went empty 😟
Fill the system full and run with the cap off. Once the fluid level is stabilized (has been running for awhile and tank is topped off) then put the cap back on. Look for the bleeder screw (tiny cap near the expansion tank) and crack loose and continue to let run for 10 minutes. Rev engine to 2,000 rpm for 1 minute with the bleeder still open. Shut bleeder go for 5 minute drive. Leave engine running, loosen bleeder again for 1 minute. All the air should be out at that point. They are a PITA to bleed.
You turn the heat on not due to hot or cold air, but because most heater cores have a coolant valve that regulates the amount of coolant through the heater core. Some vehicles don't regulate the coolant, only the air. But to be on the safe side, heat temp all the way up to allow max coolant flow, and the fan on the first click just to make sure the system is on to ensure the valve is open. This is also a double check to ensure you've got the air out of the heater core if you feel heat once the engine warms up.
It's a good thing to see air come out as long as it stops. If the head gasket is blown, there will be nasty colored water and air coming out and it won't stop.
Thank you, very good advice. I have to burp my car since swapping the thermostat didn’t stop my car from temporarily overheating, only at stops. I hope my coolant just has air and the engine gaskets are okay.
@@CR-ij8qj Hopefully you have no permanent damage
@@CR-ij8qj Have you found out what made you’re car overheat?
@@CR-ij8qj update?
I had a driver side head gasket develop a slow leak causing combustion gasses go into the coolant.
Question, I got a 15 Infiniti Q50 3.7, customer has had its radiator replaced at another shop, looks aftermarket, and thermostat, car is overheating at idle. Checked for fan operation and everything seems normal, radiator cap looks good, bleed the system, did a leak down test to check for a blown head gasket, good. But keeps overheating. Im noticing temperature drops when I accelerate the RPMS slightly, and it drops quickly back to normal, goes from 234 F to 205-210. Im thinking its a coolant flow issue for sure, maybe water pump is on its way out? Car has over well 110k miles and its never been replaced.
I’d try bleeding it again. Otherwise check flow/waterpump next.
@@Pete_Tech_ Appreciate you, ill try and bleeding it exactly like you explained in your video, theres isn’t any bleeder screw I can find on the 3.7s is there? If not im gonna have to inspect the WP, book time calls for 6.9 hrs, ouch.
Hi how can you check for actually air on your sistem ?
What does it mean when the coolant is constantly overflowing?
Dash is fluctuating a lot after thermostat and radiator change, never did this before. Was driving fine and anytime I gassed above 4k rpm I could visibly see the needle go up then as soon as I stopped gassing it went right back down. I’ve been trying to get any air out and still haven’t gotten it all out.
Ever found the issue? Currently having same issue
How would this work for a 2006 Saturn Ion w the 2.2 Ecotec, the radiator is not accessible in this car. Thanks
Same process but use the expansion tank (coolant tank)!
@@Pete_Tech_ great, thank you
I need help
My bleeder valve piece got broken /damaged. For my infiniti g35 2008 sedan . Should i buy oem valve with the hoses?
Z1 aluminum bleeder
Yeah I have an Infiniti Q50 2015 and the cheap plastic one broke I got the z1 and makes it it so easy to bleed and never have to worry about it breaking
I have a Toyota Camry 2001 2.2 Litter e tine 4 Cyl . I can hear a gnashing sounds like water in the top of my engine . Is that a Air in the intake .How do I get rid of that slashing sounds like a water ?Then I had a flaming engine lights But my car runs good How do I fixed this issue
I have the same problem what’s the reason for this help please
Thank you for this info. Can you explain please again a little more what happens when you run the car WITHOUT connecting the mass air flow sensor? What issues will it cause? I will appreciate it.
Will cause a check engine light and rough running engine. The engines computer will not be able to monitor airflow coming in, only going out. So it can not control fuel trims as well as it should and can cause other issues long term with the exhaust catalysts and ignition system.
I changed my thermostat recently and now for like 3 weeks almost lol I've been trying to get air out of my system by just popping the bleeding report watching this video I'm gonna go buy that blader kit that yellow bucket and I'm gonna do it this way this way what's wondering do I have to have my bleeder cap open while using the Yellow bucket kit?
This all started when I changed my new thermostat and this didn't happen when I changed my radiator to put in a mishimoto radiator. Idk where I went wrong
If you follow the video instructions you’ll be good to go! Make sure to bring RPM up for short time while bleeding!
ok i got a question about draining the coolant to have it replaced,,i am wondering if by draining it from the petcock if this will completly drain the whole system or will you always have some fluid left because you have a thermostat valve which will keep part of the coolant in the engine? does it need to get to temp and open up to drain the remainder? obviously you should not be runing it while doing this should you?
That's the same question I have. If your drain it from the bolt at the bottom will it drain everything completely or just some parts
@@angelgomez531 there will be some left in your block so you close the bolt and fill it with distilled water and let it run till eng comes to temp and thermo opens to circulate and flush out whole system, then you shut off let it cool down and drain ,,repeat several times till liquid is clear on the last drain and then you add your coolant but you need to take into account how much water is still left in the block to know how much coolant to add as well as to adjust for richness of mixture less you got the pre mixed stuff or keep your eye on the tank level for proper top off ,takes a long time to get it done right
@@ARCSTREAMSthats what i did. Took a few hrs but definitely was worth getting the old nasty coolant out
yeah it takes a while but goes by pretty smoothly the pain was getting to the petcock as i had to remove this plate with hard to reach bolts that was in the way but my coolant after 17 years still looked good but who knows? glad i still replaced it and the same with my transmission fluid the shop that changed it told me it was actually still in good condition after 120k km and i really wished now i never touched it cause idk if it created problems for me later as i been getting clunk noise when apply the breaks first time after i switch gear be it fwd or rev the noise only happens the one time but im not sure if its related or something else @@killakam123321
When can i take the funnel off with the car on or off
Question: my gauge says my car is not overheating but every time when I get to work which is like a 15 minute drive, I get there and there’s steam/smoke coming out of the front. Any suggestions?
Have the system pressure tested for leaks! Any smoke/steam indicates coolant is getting outside the system and creating vapor/steam. Pressure testers can be purchased for around $75-$100 or shops can do them for half that.
Check your heater hose connector, these are often plastic and break causing a leak
engine must run coolant level check infiniti FX 50?
Would the vk45 be the same as the vq35 for the bleeding process ?
Yes
just wanna add in, these vehicles the fans should not always be running; if they are that would indicate a bad fan control module which is mounted on the fan shroud
My car doesn't overheat at least the needle gauge Says so but I have noticed that after the engine gets cold (eg left overnight from a long drive) the coolant from the resorvoir gets empty but stays fine while driving)
No visible leaks. Could it be a bad radiator cap
Bro please let me know what happened, my 07 g is doing the exact same thing. I replaced the cap by I’m currently bleeding mine out right now.
@@ryanvasquez9491 I have been running my car like that since.no issues at all. I guess it only happens on long drive.
@@ryanvasquez9491check your heater hose connector, they are plastic and break all the time on vq’s, replace it either way.
This engine kills me, my infinity fx35 has a cold lower hose after thermostat and water pump replacement. Just can't get the air out. Tried all the tricks and am at a loss. Any tricks that might help me get the Tstat open? Tried disconnected the fan too but that didn't help.
Same here
What does the block temp get to? How hot?
Sometimes aftermarket thermostats can malfunction get an oem thermostat maybe online or a dealer
@@Pete_Tech_ mines(05 fx35 doing same as his the block is getting to temp 200ish. cold lower hose and the level in the funnel rises steady even after I’ve stopped getting any bubbles
i have a 2008 g35s and when i changed my stuck open thermostat i bled for about 45mins and i was not having issues. now my car overheats at idle however when heat is on there is no problem. i thought to try and bleed coolant out with this tool. it bleeds out well however when i turn off the heat it overfills the funnel with coolant and will overheat. any help?
If your confident the air is out, cap it and go drive it, don’t drive very far in case it starts to overheat. If it does bring it back shut it off wait for the system to cool down and open the Well it’s still somewhat warm and it should push some more air out. I have seen this be a common theme with some cars, one there is no cap on the system cannot make any pressure. Therefore, the boiling point is much lower.
@@Pete_Tech_ open the well? the bleeder?
Hey, I have a question I’m hoping you can answer. I need to replace the radiator fan control module on my 370Z. The dealer wants to charge $800, so I’m tempted to try it myself. To access it, I know you have to remove the reservoir, which has 2 hoses from what I understand, as the module sits underneath. It looks identical to the reservoir on this car in your video. My question is, do you have to bleed the system if you remove the reservoir?
No, you should be fine not bleeding if you are not opening up and draining the main coolant system.
@@Pete_Tech_ thanks for the info!
My kid has a 2020 q50 and his belt shredded to pieces and over heated. He had coolant everywhere and he added some now his car runs like crap. You think he has air bubbles now
I just recently changed my thermosta tried to get out the bubbles using this method and think it worked but some how if Idle for more than 5 mins the temp starts to go up any suggestions maybe the thermosta I bought is faulty?
If it was not doing that prior, that is a possibility. But depending on the reason you were replacing the stat anyways, that could be a big indicator.
So really just need to fill it up, turn the heat on full blast, wait and watch coolant level in the funnel until no bubbles? Seems super easy but still have anxiety when thinking about doing it myself.
I feel it bro but if we don’t ever try doing it how are we gonna learn ?
I put a new radiator in do I have to fill the radiator with coolant if so how much I have the o7 coupe g35 infinity
@@DonnieBling-bd4ym what did you decide ? To put coolant in the new radiator or leave it empty ? How did it turn out ? Update please.
Trust me it's super easy.
1. Jack front end up a bit so the nose is pointing up a bit. This helps with bleeding better
2. Drain system
3. Fill system
4. Turn vehicle on
5. Turn heat on low not full blast as this will take longer for your thermostat to open up
6. Let the thermostat open up a few times and look to make sure all air bubbles are gone
7. Also back left of engine there is a bleeder you can open as well to bleed from all points
@@aliwooz913Thanks for this. I’m about to try this on my G37 and am also replacing that part with the Z1s Aluminum Coolant Bleeder Port & Heater Hose. Do you think that’s why his thermostat didn’t open?
Trying to bleed my g37 and wondering if there is a bleeder valve you need to open before you bleed the system
Yes, little black Phillips screw head towards the back of the firewall. Between engine and and heater core.
Not all g37 have that bleeder valve tho so keep that in mind
Any ideas why my G only overheats in drive? When in park it can idle fine for hours without overheating, but soon as I put it in drive it starts to overheat again..
Head gasket potentially?
I bled my system this past weekend and noticed no heat or very low heat when at idle.... but only when i drive or hit the gas. Car is not over heating at all, but, was wondering why no head at idle. I'm thinking the thermostat, will get that replaced soon.
Sounds like you either still have air stuck in it, or the thermostat is stuck open. Third option is possibly a clogged heater core.
this was just happening to me as i was bleeding it, i was getting worried, but decided to let the bleeding process go on for longer because like he said in the video this specific car (the one i have) takes a while for the thermostat to open. he was right, eventually my heat started blowing very hot with no temp change :)
Yo got a question , my car coolant boils out the resovior is that due to it not being bleed?
Possibly, I would first attempt to bleed.. Unfortunately the more common culprit would be combustion getting into the cooling system via a bad head gasket or cracked block. If it starts boils over quickly after starting it and shoots coolant out its probably not just air in the system.
It’s only when I start driving it and then after 20 minutes it boils overs
I’d have the head gasket checked out!
Mine is having same issue How did you fix it from boiling out?
Change your radiator cap
Question, my 370z keeps overheating when doing this then as it’s over heating, the fluid rises a bunch and starts boiling over. What am I missing? How do I get it to not overheat and how do I know when I am done and the system is bled?
Okay, so first off. Make sure you perform this procedure from a non overheating condition. Meaning if coolant temp is already to hot, stop the bleed procedure immediately. Check to ensure that your fans, both high and low operate. Often I will turn the AC on during this procedure to force the fan operation. Secondly make sure your using a fluid feeder (like shown) that sits higher than the highest part of the cooling system. Third a sticking thermostat can cause these issues too. Make sure to feel the hose connect to the stat housing, if it’s cooler than the upper (noticeably) change the thermostat first. Another key element is raising the Rpms to get some water flow, helps pull air out.
@@Pete_Tech_ When your car overheat at idle which mean there is air in your radiator and you need to bleed it all out. Park your car at an incline angle and use the air bleeding kit from Amazon and follow the steps. The same thing happened to my Nissan Pathfinder and it took me about 6 months to figure it out. Good Luck!!
What about coolant got boiling when I drive and coolant got boiling out q50
I put on a new thermostat did the flesh with the funnel no more bubbles my heater was coming out hot when I'm driving the car's fine but when I come to a stand for a long time my temperature goes over the middle 2008 Infiniti G35 sedan I need help is that a failing water pump no leaks nowhere
I’m having the same issues it drives fine but when I come to a complete stop it starts to over heat going up the line Lil by lil than when I start to move it goes back to normal temp
Has any one found a fix for this? I'm having the same issue 2011 g37 sedan. It's driving me crazy really cause I can't figure it out and no shop I take it to can figure it out I've dumped roughly 600 in diagnostics and shop visits for this issue but no one can figure it out...why does it overheat at a stop but cool down when driving? No leaks any where head gasket is fine, fans do come on, coolant switch works, water pump works, changed thermostat problem still persists. Any answers?
@@dwayne5855 have you checked if you have any air in your motor? Cuss I was having the same issues and now I bled the cooling system and it’s working fine now. I would check it and see if that’s the problem.
@@fernandopimentel6577 hey thanks for replying....I've had two shops done that same exact thing and the issue still occurs....I actually took it upon myself to do it myself I spent roughly an hour doing it, and so far it's been running normal no overheating or anything....I'll do it one more time just to be safe but so far so good
@@dwayne5855 yeah no problem bro we all here to help each other out. And yess do that bro just to make sure that you take out all the bubbles I would do the bleeding at east 2 hours I make sure everything is good and stuff that’s what I did it’s always good to make sure everything is working good. And cuss the shop told me was my water pump and my alternator was bad so I don’t really trust shops and I did it my self and it’s working perfectly fine now. No more over heating
So if I were drain my q50s radiator and refill it very slowly and carefully would I have to bleed the system? Appreciate anyones answer here.
Yes, you will always get air trapped in a cooling system. Always bleed.
@@Pete_Tech_ thanks for the response does the q50 have any bleeder valves in its system or do you just burp from the radiator cap I can’t find any info anywhere on any valves I know the G had them.
good video to learn from bro thanks.
i have a little problem with my 2014 370z and i need answers fr, i changed the coolant fluid and the heater hose connecter but afterwards while driving the car i noticed water sound sloshing behind the steering wheel! i am kinda worried tbh and hope u got any idea to figure out what caused that issue and how to solve it.
thanks again
Sounds like an air pocket in your heater core. Re-bleed is my recommendation!
I did it but coolant leaves reservoir and fills the funnel. Not sure what I’m doing wrong
Same thing happened to me
Same! I’m kinda worried
@@UnknownLifter I ended up driving it around then bleeding it again. Worked out great
@@johnnypaul4341 I will try that today, thanks!
I followed all your steps. I left it on for 15 mins then all the coolant was gushing out of the funnel?? Why is the funnel overflowing???
Could be combustion gasses getting into cooling system. I’d have the head gaskets checked out!
Great video man , but still will be there is air in coolant system, only the way to make sure that no air by doing vacuum and coolant fill after vacuum
I half agree, that’s not the only way. 80% of bleed procedures in the industry are done by air bleeding.
That Infiniti have bleeder screw on the heater core hose, never had problem bleeding VQ35hr
The level in the funnel rises because coolant is expanding from heat not proof that there is air in the system
Dont know if anyone gives a damn but if you guys are stoned like me during the covid times then you can stream all of the latest series on InstaFlixxer. Been binge watching with my brother for the last days :)
@Matteo Zeke yup, I have been using InstaFlixxer for since december myself =)
Has any one found a fix for this? I'm having the same issue 2011 g37 sedan. It's driving me crazy really cause I can't figure it out and no shop I take it to can figure it out I've dumped roughly 600 bucks in diagnostics and shop visits for this issue but no one can figure it out...why does it overheat at a stop but cool down when driving? No leaks any where head gasket is fine, fans do come on, coolant switch works, water pump works, changed thermostat problem still persists. Any answers?
Had the same problem with my Infiniti. Changed all kinds of parts and even had the coolant system vacuum bled and still overheated. Finally took it to the dealership as a last resort and they said even tho it’s vacuum bled there will still be air. Only way to eliminate the air pockets is thru this funnel and run it for an hour -hour and half at a incline. Hope that helps
U fix it ?? Also check yur radiator cap n coolant reservoir cap
And obviously wait until the car cools so I can remove the funnel ?
You could plug it or u can get tubing put it at the bottom of th funnel and the other end in a bucket let gravity work it’s magic bro
dont you mean to say by runing the heater it removes and decreases heat from the engine and not increases it?
This is a 3.5 hr there’s a bleeder valve that makes this easier unlike the 3.7vhr
The 3.7 don't have one right ?
@@dannyboy7139yea they do on z1
MY QX70 3.7VHR has two bleeder valves according to the shop manual. You guys need to reference factory manuals.
@@dannyboy7139some do some don’t. My g37S didn’t have one
You used half coolant and half distilled water?
You can. It’s not really that exact of a science. I live in MN, it gets -40 here. If it’s not 50/50 it’s gonna freeze. Now in Florida you could use 90% water 10% coolant. Lol
what if the bubbles just don’t stop?
Then you have an issue with the gaskets, do a test with the coolant to confirm if there is combustion in the coolant system. Debris along with bubbles is a visual sign of a bad gasket
Thank you for your advice. I was looking for that part of lifting the front if its a go or no go. My last mechanic stole my coolant reservoir of my CB4. So from now on ill try all by myself. Takes longer and ill make some mistakes. But at least no one steals my shit xD
Both hose are hot. But no heat. ....?????.
@@laostyle619same did you find the issue both my hoses are hot but no heat is coming out of the vents in my car
How TF is the ac going to cool down the coolant?
High speed fan kicks on. Simple vehicle basics.
@@Pete_Tech_ also much higher load on the engine. My coolant gets hotter when I turn on the ac.
Upper hooose
I want to do this , but everyone in the comments seems to be having overheating issues. I don’t even think I wanna do this anymore, I’m afraid my g is going to start overheating too.
Not if it’s bled properly 👍🏻
Why is it important not to tip car on 2 wheels?
I didn't get it
Didn't see nothing no bleed
Is t this a 37 not a 35
Same platform from 07+ when it comes to the sedan!
you didnt bleed the air out all talking talking
such a long video on a 5 min job
That’s the point
I hope your not shipping cars out the door after 5 mins of coolant bleeding.
Hello what’s the best brand of coolant for the g35 m35 and 350z
My favorite: G05