Common Coolant Leaks on TOYOTA 5.7L V8 Engine

Helping You to understand 2 top common coolant leaks on TOYOTA iFORCE V8 5.7 Liter engine. How to correctly diagnose coolant leak on this engine installed in TOYOTA TUNDRA and SEQUOIA vehicles.

[@ricepony33]

The universe picked the perfect person to fix it.

[@ronv1725]

The joke about the Abs was really funny.

[@patrickcallahan2210]

Looking forward to seeing you do the repairs!

[@maxagent86]

Sorry for the troubles but thank you for the video. Hopefully you will film/post the fixes. Another common leak on this engine is the radiator, typically at the lower seam between the fins and the bottom reservoir.

[@e30m31989]

Glad to see you got rid of the atrocious wheels!

[@dougm.635]

We literally just did this on the fiances 2016 5.7 @ 85k miles... We did the valley leak, X-over pipe o-rings, thermostat, belt, and water pump since everything is apart and coolant is drained.. So apparently this is more common then I thought!

[@sonofliberty92]

Sucks to hear, but you fixing it, at least you know the truck is up to date and ready for the next 200k miles.

[@bblod4896]

Good luck. Looking for a good outcome.

[@MarzNet256]

Sometimes, turmoil makes relationships stronger. I believe this is the case with you and your truck.

[@GraemeRobinson]

excited to see the video of you replacing everything Petr!

[@Jaimico380]

I own the very same truck, same year (2007), and fortunately it has not yet failed me. I know for sure that the time when it will start to crack is nigh... I will need to prepare my wallet since I have no plan to get rid of that truck, I just love it! By the way, good luck with your repair sir, I know for sure that the leak will be stopped.

[@stevenbaker5099]

It is better a $1000 repair vill versus $700/month payment and $200/ insurance payment

[@thechamberofchillz9705]

Fix it and keep it!!! Better and cheaper than a new tundra!

[@anthonyp5341]

Thank you! That was great info.

[@connorm3457]

Did both the coolant valley console leak(very fun stuff😖), and the water pump. 08’ 5.7

[@slalomking]

I think Peter got more than he bargained for on this project truck.

[@theylied1776]

I would not categorize this coolant leak as a common problem, I would just simply classified as a defect. I'm subscribe to at least four different channels with Toyota mechanics, and they have all covered this topic. This is a defect.

[@jamram9924]

How is this a defect? With the age of this vehicle and the mileage it’s not unusual for this to occur. The Car Care Nut also covers this engine and it is common in high mileage vehicles using the 5.7 liter 3UZ-FE engine.

[@theylied1776]

@@jamram9924 What other Tundra engines have this same coolant leak? None. There are Tundras with 1 million miles that don't have this leak.

[@jamram9924]

@@theylied1776 there is the 4.6 and the 4.7 liter engine. The 5.7 liter 3UZ-FE engine is derived from that 4.7 liter engine. The issue with the 5.7 liter is the heat exchanger and with high mileage 5.7 liter engines this leak is common but it’s far from a defect, it’s simplest part of the location and design of the heat exchanger. It is unknown if Toyota revised that heat exchanger since this is not common with problem with low mileage 5.7 liter engines. Similarly, the 4.7 liter engine has a timing belt and many technicians fail to replace the water pump because it’s not leaking. Yet, Toyota recommends that it be replaced when the timing belt is replaced due to access. I’ve seen trucks with this engine where import shops and Toyota dealers failed to replace the water pump only to end up replacing it 10-15,000 miles after the timing belt interval replacement at 95,000 miles. Does the 4.7 liter have a defect due to the water pump? No, it’s considered part of their timing belt interval service. Every engine has their weak and strong points. All of these Toyota V8 engines are excellent and have reached 500,000 to 1,000,000 miles with maintenance. I just don’t refer to this as a defect but certainly a weak point in this specific engine. This is why I flush the coolant on all engines at 5 years or 60,000 miles regardless of make. It’s a preventative measure. There is no such thing as “lifetime fluids”

[@michaelruys5021]

Had a feeling when you bought this it would be trouble. Was more concerned about electrical gremlins because of the audio wiring but in general aftermarket stuff everywhere. I thought you should run from this one. At least it’s all your own labor. No days off for you for a while Peter.

[@aquamatt]

Those disgusting wheels that other owner put on it is the cause of this can we agree?

[@vvogt4252]

Excellent Video Brother!! Have a Great Week.

[@tundraghinidude0894]

I believe coolant dripping on belt makes it squeak

[@davinp]

That is unfortunate that you keep find one problem after another just when you though the truck was fixed

[@krisg3984]

Its a nice looking vehicle . I just had things replaced working backward to fix an overheating problem. Lead to head gaskets replaced. Costly labor. . Maybe i should have had a rebuilt engine put in instead ? (2005 4R 4wD slr). I will be following your engine work here for sure ! Very curious what all that stuff is in.on and around that engine 👍

[@tundraghinidude0894]

Just noticed today small leak on my 2008 190,000 k miles rear bottom of engine

[@ahmadghosheh3104]

I feel too bad for you. Tell you what Peter, I will take it off you hands and fix it myself 😂.

[@Shododaan]

Peter is this the same issue that happens to the lexus LS460 Gen4? I think it's called the "valley plate leak"

[@rc846]

Change the coolant @ 100K Then every 50K

[@royt1306]

Bad for you but I’m pretty sure the old owner sold the truck lots of money on junk and lack of maintenance.

[@JAY-97-97]

? is it best to remove engine from vehicle to take care of this exchanger coolant weep?

[@bubba4072]

Another great video, Peter. I enjoy these 5.7 videos. They're very informative.

[@jamram9924]

The reason most auto technicians hate to work on their cars, they’re not getting paid..😅 At times, I hate working on my vehicles as well. However, when I do, I take 2-3 days because I attempt to locate and solve any issues with that particular car. I’m going through this with a 2000 Honda Accord 2.3 liter F24A1 engine with 231,000 miles. Engine oil pump and torque converter seal are next for replacement.

[@cubsfan7761]

I had a 2013 Tundra with 50k on it and water pump was leaking. No warranty on it. $1500.00

[@joedominick7517]

Petr ,Could that leak be caused by using the wrong coolant?

[@mikez2501]

I know it sucks but that is what project cars are for…projects.

[@richardramon2175]

How many miles?? Year?

[@lukeroberts6019]

He says in the first 15 seconds of the video.

[@richardramon2175]

I originally looked for the transcript but there wasn't one. I replayed it and got the info. The seems like a lot of miles. Transcript is wrong. 2007 not 2017

[@MikeReynolds-zd4ei]

Just developed a coolant leak on my 2010 with 250k miles. Not looking forward to finding out were its from....

[@FantaLaStrada]

nice video. Thanks for teaching us. I have learned so much by watching your youtube channel. I have two pickups with the 3vze engine and within 1 month of each other both got a leak from the water pump. I guess it is common for toyotas from this video. Also liking the hair do today. You kind of look like Hurvinek!

[@niradz]

So thankful for your channel. I recently bought a 2010 Tundra, the 4.6, and your videos have helped me understand more about the truck and prepare for upcoming maintenance. Sorry to hear about that valley plate leak, hope the upcoming job will go well, and will definitely keep watching to for the repair video!

[@stumpy7777]

I feel for you, sounds like a rough job. The future owner of your truck will be very happy to have everything done right.

[@Nick41622]

It is a good thing that you are a mechanic. Yes, I do feel bad for you. Good luck.👍

[@kaimcbride1553]

Sorry to hear the news! This Tundra was sent to test you.