Direct Injection and American Gasoline
Thread Starter
Members
Joined: Feb 2005
Posts: 20
Likes: 0
From: VA
My Ride: 2005 530, Nav, HUD, Sat Radio, Xenon, Cold Pkg,
Direct injection on a gasoline or diesel engine cannot tolerate any water. American gasoline with ethanol combines with water in such a way that it cannot be separated by a filter as would be done for a diesel engine. If one is unlucky enough to get a tank of contaminated gas, there is going to be a failure of the HPFP and/or the injectors.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
Contributors
Joined: Dec 2008
Posts: 4,656
Likes: 0
Originally Posted by Newdetour' post='823925' date='Mar 22 2009, 04:15 PM
Direct injection on a gasoline or diesel engine cannot tolerate any water. American gasoline with ethanol combines with water in such a way that it cannot be separated by a filter as would be done for a diesel engine. If one is unlucky enough to get a tank of contaminated gas, there is going to be a failure of the HPFP and/or the injectors.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
Members
Joined: Dec 2008
Posts: 122
Likes: 0
Originally Posted by Newdetour' post='823925' date='Mar 22 2009, 04:15 PM
Direct injection on a gasoline or diesel engine cannot tolerate any water. American gasoline with ethanol combines with water in such a way that it cannot be separated by a filter as would be done for a diesel engine. If one is unlucky enough to get a tank of contaminated gas, there is going to be a failure of the HPFP and/or the injectors.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
Contributors
Joined: Dec 2008
Posts: 4,656
Likes: 0
Originally Posted by geekmedic' post='823952' date='Mar 22 2009, 04:49 PM
Maybe we can import gasoline from Europe, like we import water from Fiji? 
its the crap we do to it here that makes it what it is or isnt
Members
Joined: Dec 2008
Posts: 106
Likes: 0
From: Atlanta
Originally Posted by craigm1841' post='823960' date='Mar 22 2009, 05:10 PM
we already import our fuels. you might have heard about that on the news
Senior Members
Joined: Feb 2009
Posts: 664
Likes: 0
From: Portland, Oregon, USA
My Ride: 2006 550i, 1984 Mercedes Gelandewagen
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
Contributors
Joined: Mar 2008
Posts: 1,128
Likes: 1
From: Birmingham AL
My Ride: 2010 VW Passat Wagon 2.0l Tsi
Grey/Grey Budapest 18"
Lost to HPFP issues:
08 535i sport pkg
Lost to Dreaded E61 Sun roof leaks:
07 E61 530Xi
Tell me about it i'm on HPFP #3 since Nov of last year... 
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
Senior Members
Joined: Feb 2009
Posts: 664
Likes: 0
From: Portland, Oregon, USA
My Ride: 2006 550i, 1984 Mercedes Gelandewagen
Originally Posted by bigbadbull' post='824621' date='Mar 23 2009, 11:57 AM
Tell me about it i'm on HPFP #3 since Nov of last year... :(
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
The problem is that low sulfur tends to harm the fuel pump. It acts like a lubricant for the pump. The down side is that the higher the sulfur the higher the particulate the vehicle exhausts...
BTW, it's 'top tier gas.'