Toyota 3.5 V6 | Radiator Coolant | Proper Bleed Procedure

[@walter.bellini]

Thank you for the video I think that you should watch “The Car Care Nut” the video lookup is Toyota Cooling System and Bleeding for 2GR-FE. But his technique applies to most Toyota’s. Plus you should get the spill less funnel to probably and safely to this procedure.

[@akhaqan]

Most welcome. I regularly watch CCN, he is a great guy with excellent content. Thanks for recommending him.

[@SuperMan-uj7dh]

hi there, i appreciate this video. However, there is one very important thing that you missed. The engine MUST be above 2000 rpm or above during this process to get all the air out of the different components. If this is not followed, the engine will most certainly over heat and you'll warp the heads. The heater should be turned off also. If you do not follow the correct steps, you are going to have issues!

[@akhaqan]

Thanks for the feedback. I am not sure why would the engine overheat if it is below 2000 rpm? and why should the heater be turned off?

[@SuperMan-uj7dh]

@@akhaqan according to the repair manual by Toyota, especially if you drain the block, you will have an air pocket in the system. What you drained is just the radiator, there is still 20 to 30% coolant left inside the block. 2000 RPM and above is when the water pump is spinning fast enough to push water though the bleeder valve. If you do this procedure correctly, you will get a very steady stream of water with zero air bubbles. That's when you know that you have bled the system successfully. Once you do this, the heater will be very hot.

[@akhaqan]

@@SuperMan-uj7dh You are partially correct. There is no way you can overheat the engine as long as it is running, even at idle 750 rpm with radiator full of coolant. As you rightly said, the block is still full of water, we are trying to bleed the system upstream of the thermostat valve till the water in the block reaches the operating temperature of about 180F. Once that temperature is reached, the thermostat will open and circulate water everywhere. Contrary to what you are suggesting, keeping the heater on will ensure that coolant gets circulated there too and any pockets of air are removed. There is an alternate method for DIYers who are doing it at home, even if you don't bleed the system, you will be fine, just make sure the reservoir bottle is full, radiator is topped up and close the radiator cap. Drive the car, when you park it, the radiator will pull in required water as the engine cools. Top up the reservoir & radiator again. Do this 2-3 times and your coolant system will be properly bled. This is more environment friendly way as you don't waste fuel idling. The 2000 rpm method does make sure that your system is bled the first time and workshops should follow this, for a DIY, the alternate works equally well. Thanks for taking out the time to comment, much appreciated.

[@mountainbiker4450]

Do you know if the 2005 Highlander V6 3.3 L has a bleeder valve like you show in your video?

[@kyleh5356]

What size tubing 1/2 inch for bleeder valve ?

[@ckidphotography1318]

1/4 in I believe