 Earl Glant shot foreman here at Township Chevrolet for another episode of Tech Talk You guys did a vote and voted for gasoline direct injected or GDI engine So we're gonna go briefly over that a little bit information and just some things to keep in mind if you have a vehicle with that system on it so the main differences between the older fuel injection or multi-port fuel injection and your GDI would be The gasoline on it and on a multi-port is is injected into the intake meaning it's mixing with the air As it travels through the intake and then pass the intake valve into the engine and then obviously it ignites and that that's your mix so That's the older system and it worked. Okay. Everything. It was good But they've determined now that direct injection is actually better for the engine as far as you can get more horsepower You have a cleaner running engine and they can control the fuel mixture Much more precisely with a GDI So what they're mean by that is they're spraying it directly into the cylinder where the explosion or the event happens, right? so One thing to keep in mind if you've got one of those vehicles that have the GDI is There's a couple of things that go along with that one being the the intake valves will get dirty years ago when you had a multi-port you could just add an injector cleaner to your gas tank and we did every so many Thousand kilometers it would keep the backs of your valves clean and I just got this here as a bit an example So your fuel mix will your air and fuel mix in a multi-port will go buy your intake valve and gasoline is an excellent Cleaner so it kept the backs of those valves clean so now they switch to the GDI now you've got just air going through there and obviously and then you got Valve overlap because of your variable valve timing and you've also got EGR Which EGR valve which recirculates some of the exhaust gas back into the engine to help cool the cylinder It takes in a bit of carbon with it and that carbon after a while will build up just like this Now the inherent danger with that is that carbon is really really hard And as the valves moving up and down inside the cylinder It can actually beat the seat on the aluminum head and actually cause damage and issues down the road So this is a real easy thing to take care of There's tight cleaners that we have available here and a machine that we hook up to your car that that sprays This cleaner into the intake And then it obviously rushes by the valves and it cleans those intake valves for you and cleans the cylinder out so It's not really dependent on what type of fuel you use anymore because the fuel is not getting to this area anymore In driving the car, you know, you're always her people say the car's really carboned up because you know a little old lady drives it And she's barely given it a gas and she's putting along and doing a lot of in-town driving. That doesn't matter anymore it's all about engine runtime and This is gonna build up There's nothing you do about there's nothing. There's no way for you to control it. So Best rule of thumb is 30 to 50,000 kilometer mark come in and have that cleaner done Doesn't take very long only takes but an hour and we hook the cleaner up And what it does is it safely melts this carbon away some cleaners you can buy that you you know You get doing your backyard you kind of sprayed in the in the engine some carburetor cleaner air intake cleaner Can actually cause this carbon to come off in pieces and when it does Pieces of hard carbon going on the cylinder obviously is not a good thing you get that bouncing around there can cause a whole bunch more Damage so the key with the stuff we use here is it actually melts that stuff To determine whether or not you've got a direct injected engine You can bring it in here and we can let you know Your owner's manual might taste something about it. You can call the manufacturer All the manufacturers kind of have their own little names for it Ford's called called EcoBoost Active fuel management in the in the older chevs or eco tech for the chevs is one thing they use Honda's earth dreams sky active is Mazda. You've kind of heard those terms on those on the commercials and that's what they're basically referring to So yeah, it doesn't take that long Direct-injecting engines are very fuel efficient, but they lose fuel efficiency very rapidly if If this carbon builds up so when they're clean and they're working good They're a lot better than a regular fuel injected engine But if they're unattended to where that carbon builds up because carbon is an excellent source It's it's so tough fuel. It'll soak up fuel So it'll soak the fuel up you'll have a lean mixture on your O2 sensor your computer will see that and it'll start Dumping more fuel even though it's not required. So Doesn't take very long come in and ask us about it It'll get your car running now most of the people I've done it to they usually on their vehicles They come back and they say they've noticed an increase in fuel mileage or an increase in power So it's something that's kind of nice It's one of those things that you do to your car and you kind of feel or see the results from it Just kind of nice and especially when you're paying at the pumps a little savings there is great too. So Just come on and ask us about it and we'll fill you on give you some more information on it And that's been another addition to tech talk Earl Glantte keep your eye out for another vote for a topic or if anyone's got any ideas drop it in the comments below And we look forward to seeing us just to remind everyone out there Tomorrow just Tuesday night. We're having a vehicle car care night And have some stations set up how to change a tire how to look after the paint and the wheels on your car with Our detail department. I'll be doing how to check fluids and what to look for in fluids Well, another one for maintenance boost and vehicles it starts at seven o'clock Everyone's more than welcome to come if you are going to come just let us know on our Facebook page there click attend and We'll have some stuff set up and it'll be a great night and you'll ask some questions And I'll be here along with some of the co-workers and answer any questions you guys have about your car So we look forward to seeing you