12-21-2013, 05:38 PM | #1 |
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Future High Pressure Fuel Pump Issues on F80/82?
To all of you 335i people, did BMW ever remedy the inevitable HPFP failure on the N54/55. I remember reading about this when I was considering a 335is. Do we expect to see issues on the S55?
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12-21-2013, 11:13 PM | #3 | |
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Will they use the same or a derivative fuel pump - almost for sure not Did they learn their lesson and will likely develop and test the new unit more thoroughly - likely Does it mean that the new system can't also have problems - no.
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12-22-2013, 12:16 AM | #4 |
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That's why I want to wait this thing out for about 3 years post release. Hopefully by then, BMW would have rectified problems that might occur.
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12-22-2013, 12:22 AM | #5 |
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Is that a strategy that can be verified to offer benefits? I understand the allure but I doubt the data shows it actually offers much benefit. I'd like to see a large scale study that proves me wrong though.
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12-22-2013, 07:18 AM | #6 |
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2013/2014 f30 owners are still experiencing failures. Try posting this thread over there for a better response. You won't get a ton of responses for sure (not as much as the n54 atleast), but it is a concern yet to be resolved. And yes, BMW is still buying cars back.
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12-22-2013, 08:28 AM | #7 | |
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The answer is unequivocally YES. To say the new HPFP has a 0% failure rate would be not accurate. Now, infer all you want from what I said "it won't be a problem". Not anymore a problem then any other component on the engine potentially. The new HPFP started to be installed at the factory in March 2012 so any N54/55 prior to that who hasn't had the recall and new pump installed may have an issue. |
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12-22-2013, 10:41 AM | #8 |
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Most everyone that owned an E9X has experienced a near bulletproof design (other than rod bearing issues). I remember people saying it wasn't if, but when the fuel pump would fail. I wondering that since this is an N55 derivative we will be flat-bedding cars back to the dealers on a regular basis.
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12-22-2013, 11:30 AM | #9 |
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BMW's turbo problems are not limited to the HPFP's. Other fuel delivery components are also rather frequently failing. The single turbo N55 seems to have decent reliability but the twin turbo N54 and N63 have had too many issues with HPFPs and fuel injectors.
The failure stories seems less about the S63 other than the big one at the very beginning that prompted a full recall. That was not a fuel sending issue though. I'm not very optimistic about the S55 being able to match the S65 in reliability but I also don't think it will be a disaster. Having owned both the N54 and N55 I have to say though it's nice though to never worry about or have to deal with any fault codes or limp behavior with the S65. |
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12-22-2013, 11:36 AM | #10 | |
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12-22-2013, 12:36 PM | #11 | |
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I personally am on my 3rd pump. The original failed, got replaced, never had an issue with the 2nd pump but once the recall came out, I brought it in (also had 3 injectors replaced then). So it was an issue initially. Now, the new pump is just as prone to fail as the waterpump. I seriously doubt BMW will put themselves through that problem again. I've had my N54 for 5.5 years. The pump only failed on me once and I drove it to the dealership. I haven't had to flatbed it anywhere yet. So I wouldn't worry. |
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12-22-2013, 06:47 PM | #12 |
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S65 reliability
Uh, don't forget Throttle Actuator issues with the E9X that many (including me) have experienced.
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12-22-2013, 11:12 PM | #13 |
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Well, look at pre 2009 E9X 335i (coupe and 4 doors):nothing but fuel pump failure one after another. Post 2008, BMW had somewhat rectified the problem, and they had much more success.
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12-23-2013, 03:56 PM | #14 |
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Yes! The HPFP is at 210 bar! BMW didn't develop a better one, they just got better at blaming other components of your fuel system for the problem. MUCH much Better! That way they dodge the payment for the replacements. Expect the S55 HPFP to last anywhere from 0 to 40K miles, depending on whether or not the vehicle is tuned, driving style, etc.
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