GATES TRAINING: Cooling System Flush: Cleaning Neglected Vehicles FULL Version
ฝัง
- เผยแพร่เมื่อ 28 พ.ค. 2024
- The engine cooling system is one of the most critical elements of engine performance and reliability but is often the most neglected maintenance item for all vehicles on the road today. Common flush procedures are not enough to remove the amount of contaminants present in neglected vehicles. With the Gates PowerClean tool, technicians can now recommend a more thorough flush procedure to consumers. Doing so will increase engine cooling efficiency, protect the life of the water pump and eliminate unnecessary customer comebacks.
- ยานยนต์และพาหนะ
I kind of made one of these out of cheap parts from Lowes'. They sell a garden hose attachment in the plumbing section that has a rubber bulb that fills up with water and closes off the pipe/hose that you want to clean out. The end has a small opening that pushes out pressurized water. You can also get an attachment that has an on/off valve you can use to toggle the water on and off quickly to get that pulse action. The whole thing would only cost about fifteen dollars.
Or spend $500 on this tool
Thanks for the comment. The PowerClean flush tool doesn't use a pump to push water out faster. It only needs a garden hose and shop air. PowerClean’s pressure is only 28psi, so it is gentle on radiators and heater cores. We have found (as we are sure you have, too) that the causes of heater cores leaks are typically contamination, electrolysis, or degradation by the practice of mixing disparate coolants and/or not flushing per the OE recommendations.
We need more videos that can explain things this simple
Thumbs up for the mechanic not dumping coolant all over herself like I always seem to.
I was waiting for the coolant bath. I almost don’t trust the video without that lol.
when I do it there´s usually only very little coolant in the container and 90% on the driveway
I have noticed several comments on here questioning the validity of this video and the use of the tool. I thought I would offer some commentary on the subject. This was an actual flush of the vehicle, we could have searched for a more contaminated example but we used a volunteer vehicle from the group. The sock was used as a filter and we then emptied the contents onto the white cloth and let it dry to see what was available. The thermostat was removed to allow for a more complete flush. My rule of service is anytime the cooling system is opened it should receive a new thermostat, it's just good practice. The recommended use of mineral free water to mix with the glycol is made to prevent future scale and mineral build-up. The flush water is tap water and it was drained before refilling. I have since used this tool extensively in other applications and have found it works quite well to clean blocked heater cores, radiators, and engine blocks. It has saved me the trouble of removing a dash and replacing heater cores. I have yet to have it cause damage from over pressuring the system. I think you would have to have a severely damaged component to have this happen. I have also used the tool to clean sugar contaminated fuel tanks after disposing of the contaminated fuel. The alternative of simply draining and filling or using a hose is just not good enough to clean the system. I look forward to making more videos to follow-up to this discussion. I appreciate everyone watching.
Schreck.
This is a very good video I'm in school for auto mechanics on the goal of becoming a master tech I learned the same was keep it up guys
Great info I'll keep that in mind while I'm taking my test
Andrew Armstrong Thanks for your comments, the tool is regulated to a much smaller pressure than the shop air. Although the regulator is set-up to operate from 75 to 120 psi on the supply end the regulated output of the pulsations are much less. It under 25psi from what I remember but I will review the instructions in my kit to be sure.
+John Schreckengast (Schreck The Tech) Good luck removing the thermostat on many newer cars. They're buried deep under many other parts. Example: my B5S4. To get to the thermostat you need to remove the timing belt, therefore bumper, radiator, A/C condenser, multiple fans, pulleys, covers, etc. You may as well put new cam seals, front engine seal, new timing belt, new water pump, etc. on during that process.
watch chris fix he does a complete flush its awesome
Thank you for the comment. It’s fine to use hose water for the flush. The distilled water is recommended when adding the 50/50 mix of coolant and water. If there is concern about hose water pooling in the system the tech can turn off the water and blow air through each section to remove more water. We have not seen any correlation between flushing with hose water and continued contamination of the system. Hope that helps!
Very nice tool, I've witnessed it in use in the shop. It really does a decent job on dirty systems, once you get used to the quirks of using it. On really, really bad systems, I've found that it helps quite a bit to perform a chemical flush, letting the engine cool and draining out the chemical flush prior to using this tool.
I am somewhat surprised that ballcock valves are not included in the water and air feeds to avoid the need to quickly disconnect the air supply in between uses. Sure, the end user can modify the tool to include these, however, given the rather premium price of this tool ($500+), I don't think the inclusion of a water and air shutoff mechanism is an unreasonable demand. I would give this some serious consideration.
Despite the tool's obvious utility (and my own tool addiction), I can't justify purchasing it for use as a DIYer, even in a multi-car situation (in fairness to Gates, I do not believe the 91002 is targeted at the DIY market). I've chosen to settle for the more affordable Mityvac MV4570 flush gun that allow me to perform a similar cleaning process, albeit without the benefit of the patented water pulsation feature or the integrated stream pressure regulation. With due care with regard to water and air pressure, and judicious use of the air trigger, it does a decent enough job for me, especially when used subsequent to a chemical flush.
💯%
Thank you for your comment. As you may know, 50/50 is simply pre-diluted coolant. This makes it easier to fill as it is already mixed with distilled water to the correct proportions. As long as topping off with a non-OE coolant equivalent does not exceed 10-15% of total volume there is a reduced chance of premature contamination leading to water pump failure. It is generally recommended to top off with the OE coolant or equivalent chemistry.
Thanks for writing. We assume you are referring to the system's working pressure. In order to flush your system it will need to be "open," so yes, the PowerClean Flush Tool is safe to use. Does that help?
Hmmm, I wonder how long it took for the heater core to start leaking after that power flush? I'm always leery of doing a high pressure flush on a high mileage neglected vehicle. Usually always results in a come back with the customer blaming the tech for further issues.....
I'm wary of doing it
Yes heater core is supposed to be less than 10 psi
Pulsation works really well for cleaning a lot of stuff..this is common technique in industrial cleaning but recently borrowed by automotive world. It is safer than continuous stream of high pressure water which can damage surface and component...
Excellent video. Great tool.
Great video thank you!
Brilliant. Everyone needs to watch this.
Thanks +Synthmaniac Moog!
@ShortFlame Perhaps you need a good seal to hold the special type of lube on the shaft you mentioned?
Hi Parish, the nearest one to you would be MB Automotive Incorporated at 1190 South Wolf Rd, Des Plaines. Thank you for your interest!
Awesome explanation! 😁😁😁😁😁😁😁👻👻👻👻👻👻👻👻👻👻👻👻👻👻👻👻👻👻👻👻
Performing this procedure on a truck is easy. I'd like to see you flush a front-wheel drive car, with its overly cramped engine compartment, and no radiator cap - an overflow tank only.
Gates hoses, belts, and thermostats #1
Very informative!
great video thanks - Q. is it safe to empty the coolant from engine and heater core by Air only ?(by connecting the leaf blower to the upper hose and disconnected the lower hose from rad. )
From Naples ITALY.
Please is there one Gates point for your PowerClean Flush Tool here?
In awaiting, best regards.
This thing should be called the volkswagen garden hose nozzle😂 regular flushing with a garden hose sprayer is just as good. Then do a fill with distilled water and a cooling system flush chemical and no thermostat. Drive around. Drain it again and fill with distilled water if your worried about the chemical. Drive more. Drain it completely (use shop vac for the parts that don't wanna drain with gravity it works trust me😂). Fill with 50/50 coolant. And change that coolant every 3 years or so so you can avoid this issue in the first place.
If your radiator is contaminated with rust we recommend purchasing a new one. Once the new on is installed, flush the entire system using the PowerClean Flush Tool. It sounds like your heater core may be corroded or blocked as well, so have a tech flush the core to see if the issue is resolved. If not, you may need a new one.
We also recommend determining what the OE spec coolant is and only refill with a 50/50 mix of that and distilled water.
Thanks for your comment. No chemicals were used in this video. Regular tap water is all that is needed, so you can connect the tool to a garden hose. Use distilled only when refilling with coolant and water.
So how are you getting all the tap water out of the system, since tap water is bad for your motor and system?
Best cooling system video I have seen. Problem is where to find one who has and knows how to preform this service. Also, how do you know you have enough water OUT to allow enough anti freeze back in. I am due a coolant change on my 2018 Explorer (20,000 miles) but do not trust anyone as most won't let you watch. No Idea who would do this type service in Midlothian Va. area. I am not due until May and am now in recon mode.🦇
This idea is supper and is going to
Change how to flush the cooling system for ever
My manual says to not use more than 20psi air in the cooling system. Would your product still be effective at that pressure?
I purchased this tool recently and I am confused on the written instructions which states " install the backnflow preventer to the bib/spigot end of your water supply; not at the gun end of the hose". On this video she attaches the back flow preventer on the gun end. Which instructions are correct?
Very educational.
My shop uses a wymm's power flush machine, i dont think it would get as much out as this system does, but i try to do the best when its accully flushing ill pulsate the throttle a few times to helpspeed upo flow and slow it down again, ive seen some crazy stuff in dexcol a few times:)
How to treat radiator internal because my car radiator has rust in it and I re-filled coolant water from store twice already but the water color turned to rust color in 3 days. I know that there something wrong inside and some time heater not working properly. Ford made 2000 I believe this car only re-filled just water from previous owner and this car parked for over year without driving. How to treat guide me please.
I always do a "rolling coolant change" by extracting what's in the expansion tank (around a half gallon) and replacing it with a fresh 50/50 mix once a year. The expansion tank is an active part of the circulated coolant on my 4.6 Ford. Never had rust or a bad heater core and my original 2003 water pump is still kicking. You can cause problems by power flushing. Always use Prestone.
thanks for the awesome video gates. very good and detailed. i have a 2003 durango 5.9 and it has an additional heater in the back. would doing the regular heater cleaning method ALSO clean out the rear heating system? or is there another method to this? i ask, because my front heater blows hot air like it should, but the rear passenger vents blow cold air and was wondering if doing a flush would clear that issue up. its currently to cold to find out if the flap is stuck at the moment and would be to time consuming during the winter time on my DD to take all the rear interior panels out to find out.
You can flush both at the same time, but I have found it more effective to flush out the front and rear cores individually if you can get to the heater hose junctions.
would have liked to have seen a flush on a gm cooling system. i have a 97 chevy. the orange coolant really causes a lot of gunk in the system
GM Dexcool causes problems because it is not designed to be in an open to air coolant system. Green coolant is designed for open air systems. Get the Dexcool out and put in green.
QUESTION; I will do my own flushing at home + change the hoses. I will use flush chemical #1 do I need to remove and change old hoses 1st and do the flushing with new hoses or just keep the old hoses on and do flushing that way. #2 I will use distilled water...how many times do I need to fill up the radiator with distilled water and run the engine ( including heater core) ?
The most amazing part of this video is that they have a 1999 Durango that's never had the water pump replaced. I have 70,000 on my '03 and I am on the THIRD water pump. This is not uncommon from what I've heard.
Im curious as to how much longer after this video was made, did that heater core last in that durango. i own a dodge dakota and very well acquainted in the process of replacing the heater core and their overall service life.
Prolly not very long.
I'm in the 50265 area code. Is there a shop/dealership near me that has this system?
I'm replacing coolant in my '99 Pathfinder with a waterless. What will ensure engine block is completely drained?
Do you think it is OK to drain a radiator after the car sitting for 4 months or do I need to start the car up to circulate the coolant in the engine and drain it. After that use flush with distilled water to flush the coolant system......
Good video
Yes! It certainly sounds like a thorough flush is in order. If you'd like we can tell you where the nearest repair facility is to you that utilizes the PowerClean Flush Tool. Just send us your zip code via email: AutoSale@Gates.com.
Citric acid flush did a better job on my car. It was recomended by Mercedes Benz. It really cleaned everything. Radiator, heater core and engine block. I couldn't believe all the rust but, it did an amazing job.
Just Plain Ole Tommy citric acid flush ????
I have Gilera runner sp scooter and need a perodic flush for my cooling radiator.after 5000 km.now 5844 and cockpit says i need checkup.
I need one were do I buy
just wondering why you used a sock on the 'garden hose' flush, and a filter paper for your fancy flush tool? it seem to me that a filter paper would catch lots more dirt, unfair comparison IMO!
+Warryck Scown
Thank you for the comment. We are not certain why a different “filter” was chosen for the two methods when the video was created; however, we firmly believe the result is the same regardless. Independent testing has confirmed that flushing a cooling system with just a garden hose will not remove as many contaminants as with the PowerClean Flush Tool will. The secret is in the PowerClean’s pulsing action. Whereas a garden hose can only deliver constant pressure and water volume, what really cleans out cooling systems is the pulsing action that can force out stubborn contaminants. With that said, we want to thank you for your comment and will use the same filtering device for our next video.
#1 Your "firmly believe the result is the same" does not in any way prove that it is.
#2 what you didn't compare is your tool against a more thorough water hose flush. Such repeating the same steps multiple times with the hose and also by back flushing to agitate the debris inside. Once there was no more debris found THEN run your test with your tool to see if it can produce any more debris. That would be WAY more convincing. Especially considering the ridiculous price you are asking for this relatively simple tool.
Thank u
Thorough :) Thanks!
Thanks for that very interesting. I have to flush my kia soon so I have a good idea what is going to be happening.
Honda Civic= QUESTION; I will do my own flushing at home + change the hoses. I will use flush chemical #1 do I need to remove and change old hoses 1st and do the flushing with new hoses or just keep the old hoses on and do flushing that way. #2 I will use distilled water...how many times do I need to fill up the radiator with distilled water and run the engine ( including heater core) ?
Excellent
This is a rebranded HECAT Coolant Pulsator. The Hecat Coolant Pulsator
Video is also posted on youtube.
Very helpful sir
So it's basically corrosion of radiator?
I had my car in a shop for a new thermostat and I also stated I wanted a cooling system flush. When I picked it up, they didn't have it on the work order/receipt and when I asked, they were scratching their head about if they did it or not. One person over the phone (it was past closing time, I should mention) told the lady that he drained and replaced. When I questioned that as being a real "flush" she repeated that he said to her that they weren't "EPA certified". (Huh??) She asked someone else at the shop who walked up and he stated they run water to flush, but it's still more or less questionable whether or not they did it since the man over the phone said he drained and replaced, which is NOT a "flush". At least I didn't pay for what I probably didn't get since they quoted me $45 in person for the flush and it's not on the receipt as being done and it would have been about $50 higher with it vs what the ticket came up to be.
How do i check oil that is coming in water bottle, polo 2005 model 2.0
WHere can i buy that tool?
I think the reason no one does a flush as often as they should is because a lot of coolant today says 150k miles or even lifetime coolant, so they don't think they need to flush
#1 did you remove the thermostat to flush block?#2 Every time I do this type of flush, a few months later, I have to change the water pump. (this was on an 81 Toyota p/u)
+Jen Son
Thanks for the comment. In reference to your question, it is not necessary to remove the thermostat from the vehicle to perform the flush. The reason is that the vehicle must be flushed in three different stages. Prior to the flush, the radiator and heater core should be disconnected from the block via the radiator and heater hoses, and then the block should be flushed followed by just the heater core and just the radiator. As a result of this procedure, there is no need to remove the thermostat. If you have any further questions or need additional assistance, please don’t hesitate to contact us at 303-744-5651 or apateam@gates.com. Thanks again for reaching out.
While not absolutely necessary to remove the thermostat, it is a good idea as this will allow for the best flow while using the flush gun. Additionally this will prevent any loosened debris from getting lodged in the thermostat itself.
what if your car has no radiator cap and just a reservoir? start at bottom and then flush the reservoir and that be the way to get to the top of radiator? also where can you get one of these tools at?
+topdog harrison
We would recommend that you remove the upper and lower radiator hoses to flush the radiator as a separate unit. The cooling system should be flushed in three steps with the hoses disconnected to each component: engine, heater core and radiator. We would also recommend to clean and/or replace the reservoir. The power clean tool is available at different auto parts stores such as NAPA or O’Reilly. If the reservoir neck is larger than the nozzle, Gates also has larger size nozzle.
The tool comes with an extension hose and tip to get to the heater hoses or the heater hose connection. Most cooling systems are too long to flush from one starting point, moving through the radiator block and heater core. Flushing all 3 parts individually isolates the contaminants and removes them more quickly and completely.
This is a comment from down below:snoopdogie1871- yes the pressure going into the unit is high, but the unit is small. You are then taking that high pressure, with a small size flow, and forcing it into a larger area, thereby decreasing the pressure. Pressure can't even build up inside the heater core since its being use as an open system.
Question? How does 75 PSI not blow apart the heater core, especially if it’s clogged? It’s only good for like 10-12 PSI isn’t it?
The water projecting from the end of the tool is regulated to 28psi no matter how much pressure you have going in from the air or water. Of all the thousands of these tools we have sold I have never heard of anyone blowing apart a heater core. If the heater core does happen to break apart or leak there was a problem with the heater core to begin with. The PowerClean Flush Tool will not create a problem but will expose one.
what they didn't compare is their tool against a more THOROUGH water hose flush. Such as repeating the same steps multiple times with the hose and also by back flushing the heater core to gently agitate the debris inside. Continue to repeat steps until there was no more debris found THEN use this tool to see if it can produce any more debris. That would be WAY more convincing. Especially considering the ridiculous price they're are asking for this relatively simple tool. Also, a chemical flush additive can be used that is way cheaper.
did that durango have the 5.9 liter 360 cu engine or the 5.2 liter 318 cu engine or the 3.9 liter engine
CookedTick RTS
This is the 5.2 L Durango.
ok... the 5.9 i have is slightly different.
where can I get this service done in Houston TX ? , and how much does it cost ?
Here is one that I know of:
Christian Brothers
8132 West Grand Parkway South
Richmond, TX 77406
281-769-5952
I would suggest you call the shop to check on pricing and see if they have it in. This particular shop was borrowing the tool from one of our local reps, and they might still have it.
Thanks I sure will
What part of Houston? I am from that area and know a few good people.
Right off the bat I noticed they DIDN'T pick a GM car to do this flush. GM only picks designers that are mad at the world. To access anything in a GM car, like the thermostat, you have to get 34 other things out of the way. The girl here seemed to have everything right there in front of her. Apparently, the heater core nipples here WEREN'T in the middle of the firewall like mine are, requiring a topside creeper.
i have a ? if you are using tap water to do this flush now you have tap water in the block an heater cor i have been told tap water is bad so how do you remove all the tap water so you can add your Antifreeze and Distilled water mix .
You can use this tool (or others) with just a low pressure stream of air (like 15-20psi) after you are done to force out the tap water from the block and heater cores. Just be sure to purge your system of all air afterwards.
AIMS alumni stand up!!!! Woooo
I have a 87 Oldsmobile Cutlass Ciera. how would I go about flushing that and I also have a minor radiator leak somewhere but im not sure exactly were its coming from.
+Paul Brown
It would be advisable to perform a pressure test in order to find the leak first before flushing.
+Gates Auto Aftermarket I was looking under my car as there was a steady drip after driving and saw it was directly under the engine so I think it could be the water pump. do you have any garages near fort Collins Colorado? if so id like to get my system flushed. I doubt my mechanic has the power clean tool.
We are familiar with Community Auto in Fort Collins - www.communityautoinc.com or look for a NAPA auto care center. Or you can ask your local NAPA store for a recommendation. Hope this helps!
+Gates Auto Aftermarket Thankyou
I thought it was a bad thing to use garden hose water thought distilled water only?
So you can use a water hose that's hooked up to you're house?
randall wilson You can but I wouldn’t use full pressure if you go to flush it out and when flushing the heater core flush it backwards from how it normally flows and at a VERY VERY low pressure
Water pumps aren't that costly anyways, I have been changing the coolant in my cars myself for years and never had an issue. I only use distilled water and a good quality coolant.
Emerson..we are on same page.green prestone.40 percent distilled water.blue premixed for Subaru.
how can i find out who does this procedure in my area?
+appollion32 Thanks for asking. Look for a NAPA Auto Care Center or stop by your local NAPA store and ask who they recommend.
That's casting sand from the block not from no flushing over the years.
Is all that waste water hazmat? Or just the initial coolant drain?
All of it is now contaminated.
where the contaminants come from?
Contaminants can come from degraded and weak coolant/antifreeze. The protective corrosion inhibitors break down over time and can lead to metals being unprotected in the system. When you have unprotected metals the water and heat in the system can quickly corrode metals, leaving behind particles of rust, aluminum oxide, copper particles, etc. Introducing non-compatible coolants during top offs or insufficient flushing can also create a corrosive environment. Another area of contamination can come from using regular tap water instead of distilled or deionized water. Minerals in the water can leave calcium and other mineral deposits. Particles from those deposits can flake off and damage the water pump and other components.
Well i’m no mechanic, but don’t heater cores safely take up to 10-12 psi? Not 65.
The tool does not allow high pressure out of the nozzle.
can you get in australia
I don't think I'm supposed to apply more than 20 something PSI in my RAMs cooling system.
Thanks for the great advise. Mediocre Mechanics wont do it. I do it. For classic cars they wont take BS procedures. Diesel Engines have a coolant filter. Gas engines dont and need this. I do it also on all my family and most customers vehicles. Thanks again Gates.
what is the different between 50/50 no water added coolant and coolant that need to mix with water? my car is 20k miles and my coolant reservoir was kind of low, so i just added some 50/50 no water added coolant to the OEM coolant . the label say it can be mix with any color coolant, i used the peak long life anifreeze and coolant ,is that ok?
Did anyone notice that the woman in the video was using a garden hose by itself and not using a pistol nozzle the way 99% of people do? The tool itself is also basically just a pistol nozzle.
Pseudonym Plays and the water was turned way low to provide a better demonstration of why you must buy their tool!
Alessia Aikley Yeah you just open close the tap a few times a second^_^
Not knocking the product. But my only beef with this mentality is that your water pump doesn't push water like that tool... Since none of those contaminates would come out normally, they won't dislodge and harm anything, its really an un-needed tool. This is why we have exchange machines at the dealership. If it is truly that bad replace the heater core or radiator...
couldn't help but notice she had the water barely over a trickle on the hose flush, I'm sure this was done in now way to exaggerate how much more you get out with the powerclean tool, most of us regular non mechanics don't have big air compressors and hoses and fittings, on my car I have to remove 10 things to get to my thermostat, love in videos is right on top with nothing else there, lol
Very well designed tool but is it worth $400+?
You can find a kit at Wal-Mart
Or make your our
Freaking things are 900 now @ O'Reilly's. No way I would spend 900 on this thing. I did find 400+ in a few places.
For the DIYer, unfortunately not in my opinion. There are many other ways to "power flush" your cooling system, but from what I have seen the 91002 still does a superior job of it. Just not superior enough to justify $475 of my money, but then I am not a pro making money off cooling flushes.
538 at rock auto... dame expensive brass fittings
this thing has blown out several heater cores at the shop, don't get it... too much pressure for this system that is designed for 15 PSI
Please flush twice, its a long way to Brentwood!
Much easier to use a flush machine from Mahle, BG, etc
System costs 600 to 900 bucks at oreilly auto.
So.....there trying to sell you a tool...
This video is "misleading" as doing any flush you must drain refill and start engine and bring to operating temp. so that thermostat can open and circulate water through heater core and then you will be cleaning the whole system, do this several times and you will clean the total system.
Since you weren't paying attention to the video, They removed the thermostat so they didn't have to bring it to operating temps.
nosferatu49426 Removed or not for the thermostat, I agree with Randy Beard. You should always restart the engine to circulate the water flush that way you can flush a complete closed-system.
Is this a power cleaning tool commercial??? Or how to flush a radiator 🙄
I have a 1998 honda accord that has brown sludge in the Radiator...looks like creamed coffee. The car is not over heating and the AC and Heat work fine...but I know Coolant is not supposed to be brown. So I defenantly want to get my cars cooling system flushed properly. heres my zip code 19140. please point me to a tech that utilizes the Gates flushing system.
I have the same problem. Did you get it fixed? Was it just that it needed a flush or was it something else?
this is phony. Notice that the fluid collected was always greenish in color. After that much flushing it would not be green but almost clear. Lots of things can be done while the camera is stopped. Also, the hose are still coated with rust, it's best to close the system, run the engine, get it hoit enough to open the t'stat then drain it again. Then fill with good quality coolent.
Water sitting in oxidized copper turns green.
Thank you for your interest in Gates! The closest shop using the Gates Powerclean Flush Tool is in Montgomeryville, PA. Here is the information:
Mall Auto Service
781 Bethlehem Pike
Montgomeryville, PA 18956
215-412-7270
Does AutoZone have the Powerclean Flush tool also? I need to use it on my Jeep Grand Cherokee with 165K miles...
Sooo you tell me tap water is bad for a cooling system yet you pour it straight into the engine block/heater core and then don't show how to flush it...
Rob J tap water is used to flush the engine and heater components, then the tap water must be drained from the engine, radiator and heater core, before filling with distilled water / coolant. He states that in a comment above.
Duuuuh
So you use DISTILLED WATER to flush the system. I like to see you doing that, party popper.
Most of the problem with this gimmick is first,not at operating temp,second,sock filter,but we see some kind of diaper material? Third,thought tap water was not sufficient(even under pressure),also have to remember that cooling system contaminants come from cavitation,and that the hoses in the system can become embedded with metals and other sealing materials (head gasket,silicon,etc improperly applied) you'll never get the system clean as long as they are present(replacement)Fourth,flush the system as it should operate,meaning,no pulses or extra undue pressure that wouldn't be as with normal operation. That is unless,you are trying to stress test the system to cause an apparent or future problem.Mechanical systems will fail,lets just do it right to fix them.