 Hello boys and girls, welcome to my tiny channel. I've been working on this O8-09. O9 Lexus 250 IS 250 with the 2.5 V6 engine and I'm doing spark plugs. Easy job, you know, six spark plugs. 30 minutes, you're done. Well, not really. The passenger side is, it took 10-15 minutes, but the driver's side is taking me much longer and I decided to make a quick video on it. Okay, so kind of reverse, if you're doing this job, kind of a reverse engineering, I guess. Why it's a bit more difficult than usual, because the intake is in the way, mainly this bracket right here blocks this Mir Arnavot numbers, how they, the cylinders are numbered, but anyways, this driver's side middle spark plug, that's why you cannot do this without taking this off. This one is somewhat easy, accessible. This one you could probably get away with, this is the problem right here. Anyways, let me show you. It's not very difficult if you know where the bolts are, so there are two kind of hidden ones. There's one right here and it connects right over here to the throttle body and there is one here, which connects to one of these. You can access this one right from here. There is a bunch of harnesses you got unplugged and a fuel line right here that's connected to here and this is the bolt for it. Don't lose these washers. Look at this oil that came out out of the throttle body. By the way, every time you got your, you have access to the inside of the throttle body, clean it up. Okay, little bit, little brake cleaner or throttle body cleaner, whatever, on a rag and just wipe it off. So I'm going to, I actually did it. I'm gonna do it again. Yeah, all that oil is coming from inside the intake manifold. Check this out. Look at the carbon buildup on that valve. Hopefully you can see what I'm seeing. That's quite a bit. That's direct injection for you. Yep, for those who may not know, the difference between port and direct injection. It's mainly where the fuel injectors are located. In port injection, the fuel injectors would be located inside the intake somewhere along the way before the cylinders. Fuel would enter the combustion chamber with air together. The fuel will wash up the carbon buildup on the intake valve we just saw. Actually, they would never get dirty. They would be pretty clean if that was, if this was port injection. Direct injection, the fuel injectors are inside the combustion chamber. So basically it sprays fuel directly into the cylinder, pretty much, bypassing the intake valves. Now, some cars have both. I think the 350IS has both direct and port injection. This one only has direct, but I'm not sure what this fuel line is all about here. It is connected to the intake manifold, like I said before, which is right over here. I guess it somewhat cleans the intake. This is kind of soft dirt. This buildup is soft. There's just still just a lot of oil everywhere. So with the spark plugs, get yourself intake manifold gaskets as well. The black ones here, the rubber ones go here and the blue ones go right underneath this kind of an upper intake. I guess I'm not sure what to call this part, but let's say let's call the upper intake or the lower intake. I'm sorry, lower intake. Pretty simple at this point to do this. This car actually has 101,000 miles on it. It has kind of trouble starting when cold. I won't be replacing this. There is no air leaks. I am just doing that gasket, the rubber ones, and the spark plugs. Now these are old. I'm pretty sure these are original spark plugs. I mean, anyways, I mean, it is time. You can see these are burned up a bit, especially this one here. I'm just going to replace these three spark plugs. I already did the other side. Replace these gaskets here. Clean this up a little bit. I already actually wiped this off. This was head dirt over here. Make sure you don't get any dirt inside here before you take these, the coils off, before you take anything off. If you got compressed air, just blow all this dirt off. So when you take these off, you don't get dirt inside here or here. I mean, this will still get dirty once you take this off, because you won't be able to get with your compressed air underneath here. Just carefully take this off. Put it aside here. The reason why this is like that, because the throttle body has coolant going through it, you don't need to take this hose off. You would have to drain the coolant a little bit, or just, I mean, if you're replacing the intake, you can just pinch this rubber line, rubber hose, and take one line off. You'll still gonna have some coolant spill, but it's not gonna be a lot. But you can just get away with, this is the only thing that I did not disconnect, these two hoses here. Okay, you're in an outlet. So there's plenty of room for you to put it aside. Unplug the coils first. Careful, see how this one came out with the seal. This one didn't. Have a look inside. Look for oil. If you do find oil inside where the spark plugs sit, that means you gotta replace the valve cover gasket. Check this out. This is this last one here. The gap is 51, 41, and 50. This is a new one. Let's see. 42, 43. These are pre-gapped. Don't put cheap spark plugs in here. These are iridium. NGK is what I'm putting in. About 20 bucks a piece. I'm gonna torque these down to 15. 15, 18 should be all right. You could probably get away without replacing these. The rubber is, well, it's not soft, super soft anymore. But why risk it? I don't remember how much these seals wear. So I've just noted these actually matter. The way they are shaped, see this is kind of almost like an egg. This part does not have, this is more round. This is kind of more flat. Okay, so this fitted perfectly. Let's see what happens if I flip it. See, this one seems too big for this side and this I need to stretch. So pay attention. Okay, I did unplug this. So first plug this in right there. This guy here, we're plugging right in the back. So I gotta get this closer to the firewall. And now plug in that white plug. There we go. Click and take a look. Last look underneath. Check the seals. They're all still in there. There we go. Easy. Here, this vacuum line here. You can squeeze the clip with your fingers. Don't need to use pliers. Plug this in. Another vacuum line here. Here harness in. Now there was a plug underneath this guy here. Okay, that's all I'm gonna do on this side. Before I put this fuel line back in, I'm gonna finish mounting the intake manifold. So this is what you're working with. We got two 10 mil nuts, one 10 mil bolt and four or six allen bolts. So obviously these two, the nuts go here on the studs. This will go, actually didn't need to take this off, I just noticed. This just holds the cover, the engine cover, the plastic cover. Now there's one here, one in there. The allen ones are five mil. The fuel line here, it's actually got a mounting point in the back of the intake. Okay, torque specs for the intake manifold is 15 foot pounds of torque. My socket is stuck. Okay, I was gonna start from the middle but since that one is stuck, I'm gonna get it, actually know what I can do. I have another five mil. Yep, I'm slowly but surely stripping the inside of that bolt. I'm gonna finish the rest of them. This one's kind of sketchy. I'm gonna leave it at 14. It almost feels like it's stripping. So we did one, two, three, four, five, six allen ones and two 10 mil nuts. Intake is bolted down. Probably won't be able to see it but remember that bracket in the back. This 12 mil goes there. Now that fuel line, could not find any torque specs. I'm gonna do 15 and see where it takes me. Okay, need a little bit more, about 18. Okay, that's more like it. Probably even goes up to 20. If it's gonna leak, basically tighten it up a little bit more. Okay, one more bolt, another 12 mil. That bracket that I was telling you about right behind this harness here. Now that I look at it, you would not be able to do the last spark plug with the intake on. All right, this side is officially done. Okay, this little 10 mil. Now what I did was, this actually moves back and forth. I was able to bend it back ever so slightly. So there is this, I think it's a fuel line, blocking the throttle body. Once you have everything apart, you're ready to pull it off. This will be in the way. So pull this back. Don't be afraid. Probably about half an inch or so. Nothing is gonna break. I'm gonna need two hands for this. So on this side, as you can see, all I had to take off was the intake pipe, the box, the intake box that's just the top and this line here. And just, I took this off just to make my life easier. So these two 10 mil nuts off to pull away the harness and then you have access to all the spark plugs. It's smoking because oil spilled. The intake was flipped over down the belt cover and some of it got on the exhaust manifold. Should have sprayed it off before I started it. All right, that's it. All is well. New spark plugs, new intake manifold gasket. Not very a difficult job, just requires some time. Anyways, I hope this helped you out. If it did, give me a like, comment if I missed something or there is a better way. Let me know. Consider subscribing. Also, check out my Subaru STi EJ25 build videos. So thanks for watching. I'll see you soon. I gotta get out of here.