My S4 is dead and gone
01-10-2012, 05:34 PM
#31
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That U is has a semi-rigid polyamid core, and unless it is manipulated and kinked, it should be good for just about forever. I have mixed feelings about replacing some of the fuel lines with aftermarket alternatives. Yours is not the first one in the area to have a fire soon after replacing fuel lines.
That U is has a semi-rigid polyamid core, and unless it is manipulated and kinked, it should be good for just about forever. I have mixed feelings about replacing some of the fuel lines with aftermarket alternatives. Yours is not the first one in the area to have a fire soon after replacing fuel lines.
01-10-2012, 05:38 PM
#32
Now if you are talking about the hose that goes from the fuel cooler to the fuel pressure regulator, I suppose that might make a difference, but the torsion movement of the engine would be less with collapsed mounts.
01-10-2012, 05:41 PM
#33
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01-10-2012, 06:07 PM
#35
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+1 Replaced my lines a couple weeks ago with one of Roger's kits but haven't drove it yet. Pressurized the system and smelled for leaks and ran my fingers over all the clamps to make sure they didn't smell like gas. Is there something else to check??
01-10-2012, 06:09 PM
#36
I sent Bill a PM and e-mail in hopes of getting a quick response. I've got two here that are going to get fuel hose changes. This would be good information to know.
01-10-2012, 06:22 PM
#37
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01-10-2012, 06:27 PM
#38
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tveltman in Palo Alto had a fire after line replacement. He reported it here, although I can't locate the thread at the moment. It appeared to originate from the main supply loop on the passenger side. You know the one. It may be as simple as he left it loose, although you would expect that to show up immediately on visual inspection. We don't know. I'm not implicating anything specific about aftermarket fuel line kits. It may be user error. The stock supply line has a semi-rigid polyamid section there that has been accused of failing before, once spectacularly in Shane's supercharged 928. The suspicion in that case was that the large rigid supercharger intake pipe that ran over that section of fuel line stressed it and that at its age it had become brittle and broke. That motivated part of the move to fuel line replacement. I'm on the fence about this. I haven't noticed any issues with my fuel lines. The soft lines, used in low pressure areas (tank to pump, return lines), can deteriorate are are easy to replace safely. The hard (polyamid) lines in high pressure areas are where the more serious potential problems are and extreme care must be used replacing them. Mine are still original stock, and I am reluctant personally to replace that with hose and screw clamps even if FI rated.
01-10-2012, 06:28 PM
#39
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If we can't use an aftermarket alternative what are we going to use???? Most of the hoses are NLA.
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
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928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission?
George Layton March 2014928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
01-10-2012, 06:48 PM
#41
tveltman in Palo Alto had a fire after line replacement. He reported it here, although I can't locate the thread at the moment. It appeared to originate from the main supply loop on the passenger side. You know the one. It may be as simple as he left it loose, although you would expect that to show up immediately on visual inspection. We don't know. I'm not implicating anything specific about aftermarket fuel line kits. It may be user error. I really don't know what happened, but from the fire pattern, it's pretty certain it originated at the main supply loop on the right side. The stock line has a semi-rigid polyamid section there that has been accused of failing before, once spectacularly in Shane's supercharged 928. The suspicion in that case was that the large rigid supercharger intake pipe that ran over that section of fuel line stressed it and that at its age it had become brittle and broke. That motivated part of the move to fuel line replacement. I'm on the fence about this. I haven't noticed any issues with my fuel lines. The soft lines, used in low pressure areas (tank to pump, return lines), can deteriorate are are easy to replace safely. The hard (polyamid) lines in high pressure areas are where the more serious potential problems are and extreme care must be used replacing them. Mine are still original stock, and I am reluctant personally to replace that with hose and screw clamps even if FI rated.
That's the one that runs from just aft of the 14 pin connector and gets lost in the mess of coolant hoses, wires and general mismash of stuff. That ones makes me most nervous since it is the one that has the most movement. I have pulled a dozen of those that look great, but once you remove them they don't look so hot. I left this hose alone on my car for a full two years after replacing the other ones, because it looked good. Only to pull it off and see the striations and other mess inside.
Collapsed motor mounts wont make a **** bit of difference on any of the fuel hoses. That's just funny talk.
01-10-2012, 06:51 PM
#42
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I know the predicament. I don't see the semi-rigid polyamid sections as replacement candidates unless it is remanufactured carefully. I don't trust hose and screw clamps there. It could be just fine, but I personally just am not confident in it enough to change mine out. And when others have asked me to change those, I declined.
01-10-2012, 06:53 PM
#43
Nordschleife Master
Very sad to hear of the fire, glad all your people are safe.
Smells bother me, especially gas, but I'm not always very quick to react because most of the time its not from my car, its a car next to me, one of the leaf blower crew, or maybe its my car and it goes away after a few seconds. What can you do?
A little search on the net shows, National Fire Protection Association In 2003-2007, U.S. fire departments responded to an average of 287,000 vehicle fires per year. That is a lot, so its not just a 928 issue by any means.
Smells bother me, especially gas, but I'm not always very quick to react because most of the time its not from my car, its a car next to me, one of the leaf blower crew, or maybe its my car and it goes away after a few seconds. What can you do?
A little search on the net shows, National Fire Protection Association In 2003-2007, U.S. fire departments responded to an average of 287,000 vehicle fires per year. That is a lot, so its not just a 928 issue by any means.
01-10-2012, 06:56 PM
#44
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Very glad everyone was safe for sure. Hope it didn't traumatize either of you too bad.
And very sad to see the car go. Hopefully some of it can be salvaged.
I am following this thread very closely as I am going to be replacing all the fuel lines in my car as well...
And very sad to see the car go. Hopefully some of it can be salvaged.
I am following this thread very closely as I am going to be replacing all the fuel lines in my car as well...