Explain a GDI engine

[Philth]

Oh boy....here we go...

 

[homeofstone]

Reminder. This is forum is about the Genesis..

 

[GJEMD]

The outstanding issue with GDI technology is that of daily driving. Most companies ie Ford torture tested the 3.5 Turbo GDI at sustained high speeds.
This reliability has not been realized with daily driving. Big recall of this engine
with power loss and oil consumption within 50,000 miles. It appears when GDI is equipped to max out BHP trouble ensues with daily driving. I would only lease a GDI engine at current configuration

 

[PMCErnie]

^ Some supporting documentation would be nice.

 

[Mark_888]

What you should really be concerned with is why, in the current state (you know the one that Fox news and others want you to continue to support), we pay twice what the next closest G7 nation pays for health care cost...?

That is because health workers in the US make a lot more money than other G7 nations. I once met a person from the UK who was in IT, even though he had a degree from a medical college. He said he switched to IT because it paid a lot more (even though he was only making half what I made in IT working at same company).

Also, drug prices in countries outside the US are strictly controlled by the government. I don't see Obama or Democrats introducing legislation to do the same in the US.

..and rank 48th in the world in infant mortality rate...

That includes numbers for illegal aliens, or children born in the USA of illegal aliens, etc. Since we effectively have open borders, there is no way to control that.

 

[Mark_888]

I forgot that pre-'12 models are not GDI engines. I have little concern that Hyundai will stand behind their GDI engines, even past the 100,000 mile point.

I am reading your post as saying that you are not concerned, and that Hyundai will stand by their GDI engines past 100,000 miles. Not sure what you mean by that, since obviously any problems that occur once the warranty runs out is the responsibility of the owner.

 

[Mark_888]

"The 1955 Mercedes-Benz 300SL, the first production sports car to use fuel injection, used direct injection."

So it's been around a loooooong time.

It's been around, but not widely used until recently (even by MB). So there must have been a reason for that.

 

[Mark_888]

Other sources say that synthetic oils are less prone to causing this carbon build-up than dino oil is.

Many Asian manufacturers (and some US ones) now specify 0W-20 motor oil, which is only available as a synthetic. They don't like to use the word "synthetic" because that has a connotation of higher maintenance costs. Most German cars specify a higher viscosity, but they usually specific a synthetic (European formula).

 

[GJEMD]

^ Some supporting documentation would be nice.

If you a referring to my comments. I suggest you Google this issue.
This is not a term paper. I just offerd up an opinion based on my reading in the last year

 

[lncaylor]

I forgot that pre-'12 models are not GDI engines. I have little concern that Hyundai will stand behind their GDI engines, even past the 100,000 mile point.

I expect they would cover engine failures during the warranty but I doubt they will cover possible problems with power loss and rough running. They probably would consider that a maintenance problem. Even BMW does that.

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[Potty_Pants]

Fwiw...

My 335i was getting 22-24 mpg around town when new...

After a handful of updates and 30,000 miles it was at 17 mpg.
Id wager most of the lost mpg was due to carbon deposits. Note i also had a catch can

Ppp

 

[PMCErnie]

I am reading your post as saying that you are not concerned, and that Hyundai will stand by their GDI engines past 100,000 miles. Not sure what you mean by that, since obviously any problems that occur once the warranty runs out is the responsibility of the owner.

I'm simply not the pessimist that you are. First, I figure that any GDI problems that may surface, will do so well before the 100,000 mile point. Second, I figure that since Hyundai's entire luxury fleet is now made up of GDI engines, they would be insane to hang so many thousands of buyers out to dry in the event of such potential major engine design problems.

By the way, how many car makers offer the powertrain warranty that we have?

http://www.cars.com/go/advice/Story.jsp?section=buy&story=manWarranty&subject=warranty

 

[Mark_888]

I'm simply not the pessimist that you are. First, I figure that any GDI problems that may surface, will do so well before the 100,000 mile point. Second, I figure that since Hyundai's entire luxury fleet is now made up of GDI engines, they would be insane to hang so many thousands of buyers out to dry in the event of such potential major engine design problems.

By the way, how many car makers offer the powertrain warranty that we have?

http://www.cars.com/go/advice/Story.jsp?section=buy&story=manWarranty&subject=warranty

I am not complaining about the Hyundai 10 year - 100K warranty. What you said is that Hyundai will stand behind the GDI engine after the warranty runs out. That seems extremely unlikely to me (except maybe in very isolated circumstances), and contrary to the many posts about warranty and non-warranty encounters at dealers that members of this forum have written about. Obviously, it is a safety issue, and a recall in mandated by the government, then that would be one exception as required by law.

Whether or not Hyundai stands behind the drivetrain past the warranty agreement is not a big factor for me, since I don't expect to own the car beyond 100K miles (I drive less than 10K mile per year). I would not expect any other automaker to make free repairs after the warranty period is over either, so I am not singling out Hyundai.

I do think it is prudent for buyers to consider whether new technology has been proven to be reliable, especially if the owner expects to keep the car beyond the warranty period, regardless of the manufacturer. Even if the warranty is in effect, it is no fun if one has to constantly take a car in for service. And actually, IMO that same principle extends to all products, not just automobiles.

 

[PMCErnie]

^ For a guy who does not even own a GDI engine you seem to worry a lot. Me? I don't think Hyundai is going to flush their luxury sales aspirations on any such potential problems.

 

[Mark_888]

^ For a guy who does not even own a GDI engine you seem to worry a lot. Me? I don't think Hyundai is going to flush their luxury sales aspirations on any such potential problems.

All I said is that I don't think that Hyundai is going to make free repairs to a drivetrain that is beyond the 10 year - 100K mile warranty. Since I don't plan on keeping my car beyond the drivetrain warranty period, I am not personally worried about it.

Given Hyundai's abysmal reaction so far regarding the faulty brakes on the Genesis, even for cars within the bumper-to-bumper warranty period, I am not so confident as you are regarding their benevolence or even concern for their reputation.

 

[GJEMD]

Hyundai or any other Manufacturer is not in the business to keep you happy after 100,000 miles. They expect you to buy a new vehicle from them.
Face it, innovation is paid for buy the customer not the company. GDI is not
a perfected technology like MPI

 

[Mark_888]

Hyundai or any other Manufacturer is not in the business to keep you happy after 100,000 miles. They expect you to buy a new vehicle from them.
Face it, innovation is paid for buy the customer not the company. GDI is not
a perfected technology like MPI

That reminds me of the suspension problems on the early 2009 Genesis Sedan. Hyundai made suspension improvements in 2010 (springs/shocks/stabilizer), and someone made an inquiry to HMA to find out what the exact changes were so they could make the improvements to their 2009 at their own (owner's) expense. HMA refused to provide any information about the 2010 suspension changes, and suggested that the owner trade in their 2009 for a 2010 in order to get the new suspension improvements. This was documented in this forum. Fortunately, someone was able to figure it out by comparing part numbers of all the suspension components, but it just goes to show what the attitude is at HMA.

The idea that Hyundai is going to fix anything for free after the drivetrain warranty runs out is ludicrous (unless it is a safety issue mandated by the government).

 

[Alwaysforward]

Thank You for all the feedback regarding my post.

Some other questions:
- Does this GDI engine have to run on premium fuel?
- Are there any loop holes in the 10/100k Powertrain Warranty?

 

[EXBMWGUY]

Thank You for all the feedback regarding my post.

Some other questions:
- Does this GDI engine have to run on premium fuel?
- Are there any loop holes in the 10/100k Powertrain Warranty?

Regular fuel is fine. There's a loss of around 8 hp according to Hyundai. Have not heard of any warranty loopholes.

 

[PMCErnie]

Thank You for all the feedback regarding my post.

Some other questions:
- Does this GDI engine have to run on premium fuel?
- Are there any loop holes in the 10/100k Powertrain Warranty?

Don't let the handwringing worrier put you off.