2013 range rover sport coolant leak under intake manifold

Joined Apr 8, 2013

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242 Posts

The bleeder is notorious for leaking. From the dealer, it comes as the entire hose, which connects at the t-stat housing, and under the manifold. Manifold itself doesn't need to be removed, just throttle body, and piece behind the throttle body.

Most people just replace the bleeder, or even install a brass fitting into the hose in place of the bleeder.

Take your engine cover off, you'll see it right away, front and center above the throttle body. Only thing to be concerned with if just replacing the fitting, is that they tend to break apart inside the hose, and you need to be careful to not allow any plastic to remain in there.

Joined Nov 12, 2010

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23 Posts

Can I replace this broken fitting with a straight connector from the auto parts store? Or does it need to have the bleeder?

Joined Nov 4, 2013

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63 Posts

One of the first things that went wrong with my LR3 when I purchased it was this bleeder failing. I didn't want to have to get the truck towed in to the dealership (it was under warranty and I was getting a bunch of other stuff fixed as well... otherwise I would have just ordered the part and done it myself), so I replaced it with a brass straight through fitting from the auto store. It took me at least half an hour (if not longer) to bleed the system and I had my IID tool hooked up, monitoring the oil and coolant temp the entire time. It was a royal pain in the ass. I would not recommend this, but it can certainly be done.

Joined May 10, 2012

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8 Posts

Bleeder valve? It wasn't in my procedure!!!

Nowhere in my AllData DIY guide did it speak about this bleeder in their coolant replacement procedure. The air venting procedure described was very similar to the one for C5 Corvettes (I've owned two and the procedure worked on them. Worked for my LR3 and then I had the leak).

I found this post while trying to figure out my coolant leak, evident on the back of the block and dripping down the transmission housing. I feared it was under the intake; maybe the bleeder hose where it connects. While cleaning the area yesterday, in hopes that a loose bleeder cap was the reason for the leak (it was barely finger tight) and cleaning the area to make it easier to spot the leak, the entire tee broke off into my hand (more fragile than the force needed for cracking an egg). Seeing as how the bleeder isn't mentioned in the air bleeding procedure I merely replaced it with a 3/8" fuel line splice (metal) and hope that will take care of the issue, now and in the future. Seemed ridiculous to replace the faulty plastic tee with another plastic tee, even though this one lasted nearly 100K miles. Have my fingers crossed that this was the origination of the leak and that a simple $5 piece has fixed it.

The following is the coolant refill procedure. I hope somebody finds it useful.

Loosen the coolant expansion tank bleed screw.
Fill the cooling system, keeping coolant to the upper level mark of the expansion tank.
Tighten the bleed screw.
Install the coolant expansion tank cap.
Start and run the engine at idle until the normal operating temperature is reached.
WARNING: Release the cooling system pressure by slowly turning the coolant expansion tank cap a quarter of a turn. Cover the expansion tank cap with a thick cloth to prevent the possibility of scalding. Failure to follow this instruction may result in personal injury.

NOTE: When the coolant bleed is complete and prior to installing the expansion tank cap, top-up the expansion tank to 30mm above the maximum level.

Switch the engine off.

Remove the coolant expansion cap, allow the level to settle and top-up so that the level is 30mm above the upper level.
Allow the engine to cool.

Mark: Hi, it's Mark from Top Local. We're here with Bernie Pawlik, Pawlik Automotive in Vancouver. Vancouver's best auto service experience. 21 time winners of Best Auto Repair in Vancouver as voted by their customers. And today we're revisiting an old tried and true topic, a Range Rover Sport coolant leak repair. What was going on with this Range Rover Bernie? 

Bernie: Well, it had a coolant leak, it's a Range Rover. 

Mark: Okay, thank you. And what did you find this time? 

Bernie: We've talked about this a few times, I'm trying to put a little humour into it. Maybe not such a fun subject. But anyways, what we found is there was a coolant leak coming from the engine. There's a plastic coolant pipe that from the upper radiator hose thermostat area that goes down under the intake manifold in that pipe, plastic pipe had cracked. 

Mark: Plastic, plastic. What was the, what was the mileage on this vehicle? 

Bernie: Yeah, really, really low mileage. Only 63,000 kilometres. So, I mean, you know, to me that's just a barely broken in vehicle, you know, 2012, so it is eight years old. But that's still in the, and my, my thinking and with that low mileage, really not that old but nonetheless, you know, it's plastic. We run into it.  We talk about this a lot on our podcast, a variety of vehicles, to be fair to Land Rover and Range Rover. 

Mark: So what's involved with, with this repair? 

Bernie: So this repair, so this is a non supercharged model. What was involved is removing the intake manifold, and from there we were able to access all the…and I'm actually show some pictures right now.

We're actually able to access the coolant pipe and do the repairs. So once that's off, the repair's much simpler to do. Impossible with the intake manifold. Here's a, basically a view of the engine compartment with the intake manifold removed. These are the intake ports into the engine. This is another coolant hose, we changed that which runs under the intake manifold. Kind of makes sense to change at the same time. This is a rubber hose, but these do fail usually when the vehicle gets older. But make sense to do it while this is out, because you know, if all is done well, this won't need to be removed again for another eight years or so.

We'll have a look at some other pictures here. So again, here's another, another view, looking more straight down in the engine compartment and you can see the assembly here. There's a crack somewhere in here. I'm not certain exactly where it is, but you can see this orange colour down here. That's the antifreeze, the coolant that they use in these vehicles. And a view of the new part held down by a couple of bolts and everything, pieces clip in, some hose clamps, other items just just fit together with clips and pop together. So that's our picture show for today. 

Mark: Are there any more durable replacement parts available for this repair? 

Bernie: It's a good question, for Land Rover, no. There we basically need to replace everything with the same type of plastic material that was there before, unfortunately. But for certain cars, like BMWs use a lot of plastic components and they have replacements on certain models where you can actually buy a metal, say a metal thermostat housing. Or water inlets are available in metal, which is a really good option because they won't fail again. I mean, the gasket may, the gasket, that part of it may seep or leak, but certainly, the housing itself won't fail. And a lot of times the problem comes from a housing failure. So unfortunately for Land Rover, Range Rover, we're pretty, well pretty much stuck with the plastic. But you know, and other models that we work on, there are options available and we do use them whenever we can. 

Mark: We're not really showing it, but there's actually a lot of part removal to get to be able to take the intake manifold off on these vehicles. Is that, am I assuming right there? 

Bernie: Oh, absolutely. Yeah. It's quite a few hours worth of work just to change this pipe. I just showed pictures of the easy stuff and not with the, not with the manifold on, but there's, you know, it certainly takes a little while to remove that manifold, get it out of the way and then change all of the pipes and hoses. So you know, when, after that, of course, then it's a matter of bleeding the cooling system out. You've got to remove all the air from the system and with a lot of modern cooling systems there I mean, it's always been an issue in every car since I, you know, as long as I've worked on cars, getting air out of cooling system.

But it can be even more complicated on modern vehicles because they have many hoses, many passageways and little nooks and crannies where air can hide and cause the engine to overheat. So we actually have special filling equipment, which is pretty awesome. It actually vacuums the cooling system and sucks everything in. So it really speeds up the whole process. But it, you know, again, that's kind of an involved part of the procedure. 

Mark: So this is a non-super charged engine. What, is it a better engine than the supercharge variety? 

Bernie: Well, it depends. It certainly doesn't have more horsepower, which is, I mean, which is a nice feature with the supercharge engine. I mean the supercharge engine really goes fast, which is pretty awesome and nice immediate power. But I tend to find these engines are probably a little more durable. We haven't done a timing chain on one of these non supercharged engines yet. I say yet, because it probably happened, but I think it was a supercharger it really, you know, the engine speeds up. The internal acceleration in the engine is so quick when you throttle it, the timing chains are, are an issue in these vehicles. And I think they, you know, there's the supercharger, they, they weren't really built tough enough to handle that. So, I'd say, you know, overall, and of course a supercharger is an expensive item in and of itself, on top of the engine. So with a non-super charge engine, you immediately don't have that. So I think, I think you'd probably get a little more durability out of the non-super charged, but less little less thrills. 

Mark: So there you go. If you're looking for a service for your Range Rover in Vancouver, the guys to see are Pawlik Automotive. You can reach them at 604-327-7112 to book your appointment. You have to call and book ahead because they're always busy. Check out the website at pawlikautomotive.com, hundreds, over 600 articles on there about all makes and models and all types of repairs. Of course, there's the YouTube channel Pawlik Auto Repair where we have, again, hundreds of videos again on all makes and models and repairs. And of course, thanks for much for watching or listening to the podcast. We really appreciate it. Give us a like on iTunes or Spotify and thanks Bernie. 

Bernie: Thanks, Mark. And thanks for watching.

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Can coolant leak from intake manifold?

#2 – Overheated Engine Sometimes coolant will leak out of the intake manifold gasket and go right into the intake manifold, causing the engine to overheat. What is this? On the outside, you would not see any signs of this leak.

Why is my Range Rover leaking coolant?

The most common reasons a Land Rover Range Rover Sport has a coolant leak are loose hose connections, a broken radiator, or a failed water pump.

Why is my coolant leaking from underneath?

One common place of a coolant leak is the radiator pan gasket. The drain plug can also cause leaking, and if the cap that seals the radiator can no longer contain the pressurized coolant, it will leak or spray out from underneath.

How do you detect where a coolant leak is coming from?

The first thing you need to do is locate the source of the coolant leak. It might not be coming from the radiator. The best way to confirm the source of the leak is to wash the radiator and hoses with water, and then start the engine and look for new signs of coolant.