How To: Coolant Flush and Radiator Hose Replacement | Draining the Engine Block
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- Опубліковано 23 сер 2024
- Replacing the coolant, or anti-freeze, for most vehicles is an easy task. In a way, it's similar to an oil change; drain the old fluid and add fresh new coolant. Today we'll show how to drain coolant from the radiator and engine block. We'll also go ahead and replace the upper and lower radiator hoses. Lastly, we'll replenish the system with fresh coolant.
There are many different types of coolant on the market today. You can save a few bucks buying concentrated coolant, that typically requires mixing with water. (Some older vehicles may call for a 60/40 split.) As crazy as it seems, buying diluted coolant that is mixed with water, typically runs one to two dollars more. (Less coolant for more money...) but it saves you time from mixing the coolant and water.
Popular brands of coolant includes Peak, Prestone, AC Delco, Zerex, etc. I've been using Peak coolants for years with no issues. Many vehicles recommend using their specific coolant (Honda, Nissan, Subaru, Porsche, VW, BMW, etc.) If using something other than the factory-backed recommended coolant makes you nervous, your best bet, cost wise, may be purchasing a few gallons from the local dealer.
Lastly, always clean up any spilled coolant. Many animals, including dogs and cats, may lick the coolant. Ethylene glycol highly toxic if ingested.
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Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.
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Very good job filming and explaining for those of us with very little mechanical skills. I have an '05 TL with 96,000 miles and have never changed the coolant. I bought it brand new. It has not lost one drop of fluid but I am still going to do this. Great car. Never had any trouble. Thank you.
Glad to help!
Wow, you really make the coolant flush look doable for us DIYers. NOW, I'm willing to try this. Thank you for such a well done informative video.
Good morning craftsman. My name is George, an engineer from Corinth Greece. I want to tell you that I have been following you for a long time and you are worried. But today with this video, you get the most admiration from me. You know, .... What makes the difference is the detail. Insert a folded cloth between the hoist and the body, even on the tripods. Stop here, what you did says it all. You also have a love for what you do ... Well done. George engineer Greece.
Thank you, George. Appreciate the feedback. Cheers.
Its about time for me to do this. I own a 2004 Acura TL. My radiator hoses and radiator has never been replaced. Thanks for the detailed tutorial 🤙🤙
Glad to help!
@@CarsNToys hello my friend have an acura that have a code p0128 and he replace thermostat and coolant sensor but after few days the code come back on the acura is a 2008 tl I don't know if u can help me I will appreciate you help thanks
@@osbaldocano5374 is it overheating?
It’s nice seeing an older car with a clean underside. I recently moved to central KY and anything over 8 years old is rusted solid from front to back
Great video and straight to the point!
My fan never turned on. I did have the cap on too tight though. Not sure whatwent wrong there.
About to do some work on a 2005 MDX. This video is great. Thanks very much.
Glad it helped
Great video, in addition to the hose change out I always change the thermostat. Had one stick closed on a 70 Impala a long time ago. Was in the parking lot at Talladega before the race and a dude pulled in and his hose burst dumping coolant...ever since I have paid attention to the coolant system.
Great and clear video! Thank you so much!
Your videos are the best
Good tutorial st8 to the point. Can u flush without draining the engine block?
About how much coolant is inside of the engine? I'm curious how effective of a coolant flush I'd get if I just emptied the coolant out of the fastener under the front-center of the vehicle?
Very good video. Thanks so much.
Really good descriptive video! Thanks for the help!
Happy to help.
Very well done instructional video. Thanks!
You always do a great job explaining ! Just noticed 85.5 thousand subs !! Come on 100K !! (been subbed many moons)! lol.peace
Thank you! I appreciate the feedback.
I was waiting for this one! Awesome video
Thank you. Hope it helped.
hello, is draining the lower hose considered to drain the engine block?
Very informative clip. Thank you.
if show the link where to purchase the hose. it will be very nice
Wow. Nice. Thank you.👍👍
I can't seem to find that engine block part on my 2005 Acura MDX. I see it in the book but now when I search for it.
This is awesome thank you!
Great video but one question - Aren't you supposed to "burp" the air out of the coolant system when adding new coolant? I heard that when air gets trapped, it could cause overheating and other head gasket issues.
Bleeding it by having the cap off for the 2 fan cycles and have the bubbles coming out, ... that IS "burping" it.
@@kittymunday1986but the cap was on 🤔 wasn't screwed all the way but wasn't off either
@@FallingStar1080 on the 3rd gen TL the system is also bled via the overflow cap that has an air outlet on the plastic white cap
Great video ..
Do I have to take off the reserve tank
Thank you
Thanks
Great video. How much fluid did it take?
Any videos on removing the dashboard to get at the heater core for a mdx 2003/4 or similar?
Can you a fluid extraction tool to drain the coolant out instead? Thanks.
Do i have to lift up the car to do a flush ??
I have a 2004 tl and used the asian zerex green fluid because it said its for honda/acura, but the other zerex blue also said the same thing. Does it matter?
would this be the same for 2007 acura rl
Hello, will this tutorial work for a 2016 Acura MDX?
I have a acura tl 2012 I change the radiator but l don't know what happens the 2 left side driver don't freezer well
Great video!! I’ve a 2009 Acura TSX and would like to do the same. Is it the same process for this model?
Thanks for the video ! I have a question if you don’t mind. What if even after the bleeding process where you let the cap for two radiator fan cycles you still see bubbles coming out? What should I do? The temperature gauge inside on the dash is normal and where it should be but air bubbles are still coming out.
Keep going until there are no more bubbles. Turn the heat on high in the car so that any air in the heater core can get out. Let it sit for 10-15 minutes so that all the air can move through the system. Squeezing the upper radiator hose can sometimes help burp out any air stuck in the system. If you still have air bubbles coming out you might have a leak somewhere in the coolant system. If there's a leak even a small one, air will get into the system and you'll keep seeing bubbles. If you think you have a leak you can go to Autozone or Advance Auto and rent a coolant pressure tester for free to confirm if there's a leak. Make sure the tester is on and sealed tight to the radiator filler neck. If you test the coolant system and there aren't any leaks around the radiator filler neck where the tester is connected to but the system still isn't holding pressure, you have a leak somewhere.
Does it concern anybody to start the engine when the engine block has no coolant? It would need the thermostat to open before the coolant exchange between the engine block and the radiator happens. I would assume the little coolant residual inside the engine block would turn into stream immediately to open the thermostat.
You have a good point. Didn't think of that before. The manual does suggest/recommend the engine block drain during flush. Methinks there could still be leftover coolant that will heat up to open the thermostat. I just drain it from the radiator side but I do it twice after driving the car for a week or two. That should get rid of most of the old fluid and replenish any leftovers.
ever get a solid answer on this? I had the same thought
You're thinking about it backwards. The thermostat opens to let coolant out of the block and back to the radiator. When you fill the radiator, some of that coolant goes immediately to the block. Once that coolant reaches a certain temperature, the thermostat opens to let it circulate back to the radiator where it can be cooled down.
Hey thank you so much I have a 2005 Acura RL, I noticed one day coolant was splattered all over my engine cover and engine bay. The coolant reservoir was bone dry, I refilled it with coolant and drove it. Coolant level went back done to below minimum, refilled again and drove it without coolant going below the minimum line again. Should I be worried? Or should I do this maintenance you just showed?
Yes you should as there are leaks that allow the coolant steam to escape. A proper check would need a pressure test. But you may wrap a dry towel around the radiator cap and check it after a ride. I bet it is a leaky radiator cap that may be replaced for $4 (autozone). The rubber seal may be uneven or damaged.
Gary Zhang thank you for the advice will look into a new cap!
Do you have to keep the car on when adding the coolant to avoid air in the system?
Not a pro by any means but I believe when the fans turn on two cycles it will flush out the air (as long as you keep the cap loose.)
At 6:28....you say remove clips to move shield away from area of lower radiator hose...... that’s not quite all there is to move that shield far enough away from being able to access the lower radiator hose.
There’s also 2 or 3 bolts you must remove to lower that shield that are located just out of frame of your video
That shield is a PITA to move with just those 4 clips you show
That’s misrepresentation of shield removal imo
But after I removed All relevant fasteners it was easy to gain access to the hoses
Do you recommend any chemical flush like the one Preston makes?
Thanks, John. Which product are you thinking of? I tend to follow what the manufacturer (Acura in this case) recommends.
If your cooling system is Very dirty and contaminated and has lots of debris in it, yes. Be aware, dislodging debris can cause it to plug small openings in the cooling system. Be prepared to use SAFE fluid pressure to flush out a Very dirty cooling system.
If the cooling system is in relatively good shape, I recommend using DeMineralized water for the flush.
Use HONDA/Acura coolant in Honda/Acura vehicles. I believe its a dark blue color now (year 2020).
NOTE - Any flush will leave some amount of the flush water/chemical in the engine block. Make SURE to fill the vehicle with 60/40 coolant/water mix, run the vehicle to operating temperature, let it cool, then drain engine and radiator again.
THEN fill with either 50/50 or 60/40 Coolant/Water mix. Check it with a Hygrometer to be sure.
Yes, this uses a lot of coolant. BUT you want to be sure that the coolant/water ratio is at LEAST 50/50.
www.waynesgarage.com/application/files/7814/4070/9576/antifreeze_chart.jpg
Stay gold.
You didn't explained how you removed the antifreeze from the block
That's what I was thinking
03:45. You guys didn't pay attention in school, did you? 😂
@@lroman102695 12mm nut
When was the engine block drained???
As mentioned 3 minutes in to the video, it was impossible to set up the camera and remove the fastener. Draining was done off camera. My goal was showing where the drain valve is located.
@@CarsNToys gotcha sorry I missed your explanation. Thank you.
engine block is void of coolant and starting up that way seems risky, I'd rather fill through the hose to fill up the block since u r at it. that way heat won't have a chance to do much damage to the block
Right smack in the middle
Brother, I'm sorry, but that is not a fastener. Fasteners join to pieces together like a button. That is a drain plug or a petcock. Just so you know.
Why the hell don't you have gloves?
Most importantly, just pay the extra money and get OEM Honda parts instead of the Chinese junk (especially the hoses) that'll fail before the original OEM hoses would have.
Believe or not, that oem Honda parts were also made in China. Go check it yourself.
This is too much work I'm about to just drain and refill😂
This is wayyy to much work.