Remind me to never buy an early GDI car.

"G_Body_Man: Sponsored by the number 3" (gbodyman)
11/29/2015 at 19:57 • Filed to: None

Carbon deposits will happen. Jesus.

DISCUSSION (40)

aberson Bresident of the FullyAssed Committe > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:00

#BlackValvesMatter

Jordan and the Slowrunner, Boomer Intensifies > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:01

A lot of that happens when you let it idle and warm up. You aren’t supposed to do that with direct injected engines.

G_Body_Man: Sponsored by the number 3 > Jordan and the Slowrunner, Boomer Intensifies
11/29/2015 at 20:02

Huh.

G_Body_Man: Sponsored by the number 3 > aberson Bresident of the FullyAssed Committe
11/29/2015 at 20:02

#AllValvesMatter

TheHondaBro > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:03

Yup, only for engines with carburetors.

Steve in Manhattan > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:04

GDI? A Volkswagen model I missed?

promoted by the color red > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:04

Time for an Italian tune up?

Jordan and the Slowrunner, Boomer Intensifies > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:04

It’s also good to give them the old Italian tune up every so often.

Dr. Zoidberg - RIP Oppo > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:04

You better check your privilege.

G_Body_Man: Sponsored by the number 3 > Dr. Zoidberg - RIP Oppo
11/29/2015 at 20:07

Huh?

G_Body_Man: Sponsored by the number 3 > Jordan and the Slowrunner, Boomer Intensifies
11/29/2015 at 20:07

I need to take my dad’s Sonata out for one soon.

G_Body_Man: Sponsored by the number 3 > promoted by the color red
11/29/2015 at 20:08

Methinks so.

Jordan and the Slowrunner, Boomer Intensifies > Steve in Manhattan
11/29/2015 at 20:09

Not VW, that’s just the abbreviation for gasoline direct injection.

G_Body_Man: Sponsored by the number 3 > TheHondaBro
11/29/2015 at 20:09

Don’t rotaries also need to be warmed up before vigorous driving can ensue?

Steve in Manhattan > Jordan and the Slowrunner, Boomer Intensifies
11/29/2015 at 20:10

Ah, OK. Is it the same as throttle body FI?

DasWauto > Steve in Manhattan
11/29/2015 at 20:12

GDI is Hyundai, their badging for direct injection engines. VW’s equivalent is their TSI engines, like in my Golf, though those are also turbochargers.

bob and john > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:13

just dont drive it like a grandma all the time and your good

Jordan and the Slowrunner, Boomer Intensifies > Steve in Manhattan
11/29/2015 at 20:13

Not exactly. Direct injection usually is a higher pressure, and most importantly the fuel is injected directly into the combustion chamber instead of indirectly.

G_Body_Man: Sponsored by the number 3 > bob and john
11/29/2015 at 20:14

My parents are screwed, then.

bob and john > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:14

nah. you just need to take it out ever now and then and wring it out a bit.

Steve in Manhattan > DasWauto
11/29/2015 at 20:15

OK - thanks for the explanation. You’re talking to a guy who once rebuilt 2 Stromberg carburetors 3 times (Volvo) so I start with a deficit.

Steve in Manhattan > Jordan and the Slowrunner, Boomer Intensifies
11/29/2015 at 20:17

Thanks for that. There are holes in my automotive knowledge. Clearly I need some direct injection.

dogisbadob > G_Body_Man: Sponsored by the number 3
11/29/2015 at 20:18

Kinja'd!!!

iSureWilll > Dr. Zoidberg - RIP Oppo
11/29/2015 at 20:40

This was hilarious Dr!

fhrblig > G_Body_Man: Sponsored by the number 3
11/29/2015 at 21:02

How early? I’ve got a 2013 Optima GDi. What helps avoid that?

G_Body_Man: Sponsored by the number 3 > fhrblig
11/29/2015 at 21:06

We have a 2013 Sonata. Regular seafoam treatments? I don’t know.

AM3R shamefully returns > G_Body_Man: Sponsored by the number 3
11/29/2015 at 21:12

Yup, I plan on getting my 335i walnut blasted to take care of this when I hit 65k.

wafflesnfalafel > G_Body_Man: Sponsored by the number 3
11/29/2015 at 21:38

damn - I had heard Audi and Hyundai GDIs had issues. Wonder if the Mazda Skyactives and Honda Earth Dreams have the same problems...

Logansteno: Bought a VW? > G_Body_Man: Sponsored by the number 3
11/29/2015 at 21:46

Apparently some forms of Ford’s EcoBoost will die an early death from carbon buildup if you run 87 instead of 91 or 93.

I make my mom run 93.

twochevrons > G_Body_Man: Sponsored by the number 3
11/29/2015 at 22:17

It’s never a good idea to beat on any engine until it is properly warmed up, though I could imagine that rotaries would be particularly sensitive to it. However, the best way to warm up an engine is by driving gently, rather than just letting it idle. The same goes with carburettors, any stock setup in good tune should be perfectly drivable from the moment you start it, except in the most extreme conditions (and most carburettors I’ve seen have some kind of winter setting, either manual or automatic, to compensate for that).

John_Harbinson > Jordan and the Slowrunner, Boomer Intensifies
11/29/2015 at 22:24

Came here to make a comment about that. Lots of the V10 Audis had this buildup happen to them. Never happened to my friend’s dad when he had one, because every morning, routinely, he would give it a nice Italian tune up on the way to work. Many stories about nasty buildup from the dealer though..

SnapUndersteer, Italian Spiderman > fhrblig
11/29/2015 at 22:44

Not having a car with poorly-designed DI prevents that.

His Stigness > Jordan and the Slowrunner, Boomer Intensifies
11/30/2015 at 00:43

When you say let it and idle and warm up, do you mean for minutes on end, like five or more? I ask because you should let a cold engine idle for at least a minute to get oil circulating properly, not starting and immediately driving off, because doing that is beyond stupid.

His Stigness > fhrblig
11/30/2015 at 00:48

It depends on how quickly the carbon can build up, but the way to prevent is to do an induction service at certain intervals, possibly as often as 5k miles. I have a TDI and I do it every 10k miles because the chemical is only $20 and takes me about half an hour.

Doing the service is really easy if you can get a treatment in a spray can, and all you have to do is spray it into the intake, and if you have a non-turbo car just do it right after the MAF. If you have a turbo car you do it after the intercooler.

fhrblig > His Stigness
11/30/2015 at 00:53

Thanks! It’s a non-turbo.

Jordan and the Slowrunner, Boomer Intensifies > His Stigness
11/30/2015 at 06:21

Actually it’s more like 30 seconds. The key is to ease into the engine until it is warm.

uofime-2 > wafflesnfalafel
11/30/2015 at 10:32

Some are worse than others, but all direct injection engines have carbon build up issues. Intake valve cleaning is basically a maintenance item.

uofime-2 > Logansteno: Bought a VW?
11/30/2015 at 10:33

Once the deposits get bad you end up getting detonation, higher octane will alleviate that but only so much.

His Stigness > Jordan and the Slowrunner, Boomer Intensifies
11/30/2015 at 10:37

I'll concede to the 30 seconds for my TDI. My Mercedes (2000 C230K) seems to have a built in timer though; when it's cold it maintains a high idle and gradually winds down. It does it much longer than I've seen on other cars.

Amoore100 > His Stigness
12/20/2015 at 01:29

Same. My V50 idles at around 1200 after cold start up for only about 10-15 seconds before it goes down to normal to remind you to let it warm up for a bit...