Is it possible these additives contributed to the failures? Just asking.dweisel was using religiously additive (PS?) and B5, and had two failure...lubricity is not the definitive answer (but it does help a lot)
Is it possible these additives contributed to the failures? Just asking.dweisel was using religiously additive (PS?) and B5, and had two failure...lubricity is not the definitive answer (but it does help a lot)
Thank you. Qft - I also had a failure with b5dweisel was using religiously additive (PS?) and B5, and had two failure...lubricity is not the definitive answer (but it does help a lot)
Agreed. Until a class action suit is won, and VW has to send out notices to those with the problematic pumps with an extended warranty. Personally I think extended warranty should be the life of the car and transferable due to the expensive repairs.The real problem is VW will never "admit" there ever was a real problem. So if a newer design is really more robust, and MORE importantly, fails without catastrophic fuel system fowling, we won't get a fair heads up.
The only thing a class action does is makes the lawyers rich and you get a $10 coupon to Dunkin Donuts.Agreed. Until a class action suit is won, and VW has to send out notices to those with the problematic pumps with an extended warranty. Personally I think extended warranty should be the life of the car and transferable due to the expensive repairs.
Maybe owners of new (future?) VWs won't get the notices because the pumps have been fixed. Or maybe the class action suit won't cover newer years. Or maybe VW will come out with a better pump (but is would take year(s) for the pumps to illustrate per way less failures, that the problem was fixed.
So True!The only thing a class action does is makes the lawyers rich and you get a $10 coupon to Dunkin Donuts.
Did I miss something? All I saw was a way to remove air from my fuel. It did raise a question about how the fuel is returned to the tank on the CR cars. Working with liquids, the best return would be a bottom feed and the sencond best having return line against the side of the tank with the flow of the liquid directed towards the side of the tank. I find it difficult to believe that any engine is set up with a free falling return like in this video. Not only would this lead to foam generation but raises the fuel content of the vapor in the tank headspace and creates a more volatile environment.This is a good example why you don't want to run your fuel tank low on a CR diesel and risk cavitation, and lack of lubricity of your HPFP.....
http://www.youtube.com/watch?v=ujokaEkF8Z0&feature=player_embedded
Getting air in the fuel flow is NOT cavitation, it is aeration. Cavitation is vapor bubbles forming under low pressure, then collapsing in higher pressure areas. When the bubble collapses, a micro jet of high speed fluid forms and can damage metal. No such risk with entrained air. Those bubbles do not colllapse.This is a good example why you don't want to run your fuel tank low on a CR diesel and risk cavitation, and lack of lubricity of your HPFP.....
Do our CRs pump that much volume of fuel? What's the capacity of this "demo" tank?This is a good example why you don't want to run your fuel tank low on a CR diesel and risk cavitation, and lack of lubricity of your HPFP.....
http://www.youtube.com/watch?v=ujokaEkF8Z0&feature=player_embedded
There are sure more ways to do it than what I suggested.If the thing was plumbed so the supply to the pumping chamber came directly from the clean side of the filter, and not from the cam chamber where the wear might occur, the failure would be isolated to the pump itself. Send the cam chamber return flow to dirty side of filter or its own filter. That is the fix. A 1% chance of a pump failure is a risk I will take. Keep the damage isolated.
Also the fuel from the clean side of the filter does not have enough pressure to feed the HP pumping piston. A booster pump is after the filter and may in fact introduce some metal particles (although it has a pretty fine screen after the booster pump).If the thing was plumbed so the supply to the pumping chamber came directly from the clean side of the filter, and not from the cam chamber where the wear might occur, the failure would be isolated to the pump itself. Send the cam chamber return flow to dirty side of filter or its own filter. That is the fix. A 1% chance of a pump failure is a risk I will take. Keep the damage isolated.
Well, if the pump's going to go, it couldn't get more convenient than that.So my HPFP just failed while under dealer care for the intercooler kit - 14000 miles. They're fixing it this weekend.
What is my next step? I want to make sure that this failure is logged.
So my HPFP just failed while under dealer care for the intercooler kit - 14000 miles. They're fixing it this weekend.
What is my next step? I want to make sure that this failure is logged.
Tell me about it. I'm looking into NJ Lemon Law. I love diesel and all, but at some point this isn't worth it.Your name wouldn't happen to be Murphy would it? Man I feel bad for you after having it in the shop for one issue now they get to keep it a bit longer.
While pumping your own gas is illegal here, you can actually pump your own diesel. Though, of course, no one actually knows that and they yell at you if you try.NJ huh? Interesting point, do you fill your own diesel or do folks pump for you
(or did the dealer have to have some fuel put in and a possible mis-fuel there?). Also did you use an additive or any bio blends?
I heard just the oposite from a Service Manager that was replacing our 09 JSW hpfp. No break in required. Conflicting info from two sources is worthless. I have a feeling your sales guy was trying to give you some "feel good" info and that's not saying the info I got from the SM was correct either.One other thing worth mentioning, can't remember if it was when my wife bought her sedan or when I got my JSW. But the sales guy said something along the lines that they do something special on the first fill up. The implication that I got was it was to help insure that it's well lubricated out of the gate as that may have a big impact to longevity. (Think of it as a break in.) Could have been BS, but it sounded good.