Last post on Jul 28, 2013 at 1:05 PM
You are in the BMW 5-Series
What is this discussion about?
BMW 5 Series, Electrical, Engine, Sedan, Wagon
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#2483 of 2735 Re: High Pressure Pump [whitehot5]
Feb 20, 2010 (8:16 am)
The delay and jump symptom sounds like an acceleration lag off the line. Lurching could be a fuel injector misfiring. With the misfiring, I was experiencing very rough idling and above 50 mph the car almost felt like it was bucking, which was the misfiring. The long cranking is a symptom of the HPFP. I would take your car into a BMW dealer for evaluation of the software (acceleration lag - new update was out in Jan 2009 per a class action resolution), HPFP (long cranking), and fuel injectors (lurching). Make sure you tell them all the symptoms so they look at everything. They don't really have resolution to the issues except replacing parts with no guarantee from what I am told by my service manager. There hasn't been a recall.
Feb 20, 2010 (9:12 am)
Can't say without seeing a photo of the damage, but it could be related to severe detonation----very odd diagnosis, that ALL cylinders would be absolutely "0". This suggests, if true, a total catastrophe of some kind that should not be hard to identify. Your report is very puzzling to me. Are you quite sure your timing chain didn't snap, or that the car did not severely and rapidly overheat?
IN any event, I don't see this related to the gasoline issue. Now, if someone had put gasoline in a diesel engine, well....maybe...but diesel or water just makes an engine stop from lack of combustion.
I'd like to hear a *much* better explanation of how we lost compression in all cylinders simultaneously. Until we have that, I don't think you have a case here.
#2485 of 2735 Re: Help [Mr_Shiftright]
Feb 20, 2010 (9:52 am)
I've seen two gasoline engines that were violently destroyed due to diesel fuel being used. From the looks of things, detonation was occuring at the extreme and the valves and piston domes took the brunt of the damage. That said, it was summer time and both of these engines were carbureted; I'm not at all sure the injectors of a fuel injected engine (operating in the winter time no less) would be able to feed enough diesel fuel into the induction system to cause the detonation I saw on those engines.
Feb 20, 2010 (10:29 am)
I can't even imagine someone attempting to drive a gasoline car that was struggling to run on diesel fuel. There would be so much smoke, noise, sputtering etc, it would seem rather reckless to push an engine to such extremes. I can't imagine how the car could go 5 miles on diesel fuel.
Of course, we are talking about *pure* diesel fuel, not a cupful. A cupful in a tank of gas wouldn't hurt anything IMO. Even a cupful of water wouldn't do much more than cause sputtering (maybe) and a clogged up fuel filter perhaps.
Sudden loss of compression on all 6 cylinders is a pretty amazing occurrence. I was thinking there would be an obvious answer to why this happened.
#2487 of 2735 Re: Help [Mr_Shiftright]
Feb 20, 2010 (12:36 pm)
The two engines that I saw had both been filled in a "Full Service" lane by an attendant, and both had at least a quarter of a tank of gasoline when the fill-up event occurred.
Thinking further about this, it seems logical that when the car was started, and when the owner pulled out of the station, the engine was still running on gasoline that was in the carb bowl(s) and in the fuel lines, so it's possible that both cars were up to speed before the diesel started making its way into the engine.
#2488 of 2735 Re: Help [shipo]
Feb 21, 2010 (3:37 pm)
Mr. Shipo and Mr. Shiftright,
I appreciate your responses. I will take your ideas to my mechanic. He's independent but works on many BMWs. The "event" actually happened last August, so it was warm. Situation. After work, drove .25 mile to get "fuel". Then drove about .5 mile when the car started lurching, whereby I put in the clutch and coasted to a stop. Hasn't run since.
I'll try to see if the mechanic can take some photos of the cylinder walls. I've seen the walls, not pretty.
#2489 of 2735 Re: I'm thinking of purchasing 1991 525i [kturner00]
Feb 22, 2010 (9:24 am)
Hi Re: I'm thinking of purchasing 1991 525i [kturner00]
I just parked my 1990 5 Series with 287,000 Km's, that's about 200K Miles.
Got tired of putting more money in to it.
With a current market value of about 1400 Euro's at that mileage
130kilometers you can count on repairs.
But to answer your questions:
Control Arms in the front will be a repeat repair.
Wheel bearings in the rear tend to rust and if you wait to long
they have to be Torched out.
Valve train ( lifters or vanos will eventually start making noise.
The only repair for that is replacement.$$$$
The end muffler I replaced 4 times in twenty years (ever 5yrs.)
One clutch disc in twenty years.
One water pump.
The list goes on, but you get the picture.
Let me just say in closing, I kept that car in top shape for twenty years
but it bleed me to death.
That should answer your questions about gasoline, I think.
#2490 of 2735 Re: High Pressure Pump [whitehot5]
Feb 22, 2010 (5:23 pm)
Just received a letter today from BMW corporate acknowledging problems with high pressure fuel pump (HPFP) problems on 2008/2009 535i models, and as such is extending the warranty on the HPFP from the normal 4 years/50,000 miles to 10 years/120,000 miles, whichever comes first. I'm saving that letter for any unfortunate future reference.
My HPFP went at 17,000 miles on my 2009 535i x-drive. Dealer knew immediately the cause, though did not acknowledge any known problem when I questioned them on it. Surprise, surprise. Otherwise, the car has been problem-free and one sweet ride.
I wonder if the recent Toyota debacle has given the entire auto industry a wake-up call. I certainly hope so for the sake of both the industry and us consumers. The cost of recalls and extended warranties pale in comparison to the cost of a damaged brand.
#2491 of 2735 maintenance on 530i
Mar 05, 2010 (2:33 am)
wow after reading about these 535i problems, I'm so glad I didn't go with the one I saw at Bridgeport BMW (CT) last year! Something just told me to not go with a new model (turbos).........my instincts were right. Anyway..........have a beautiful 2007 530i, just had it serviced under the warranty 30K......came through with flying colors, didn't cost me a CENT. Service tech said see ya next year, but I'm wondering, an oil change every 15K miles, does that sound correct? It just seems like a lot of miles to go between oil changes. Guys thanks. I've learned so much from these boards.
Gardis - CT
#2492 of 2735 Re: maintenance on 530i [gardis]
Mar 05, 2010 (6:30 pm)
I'm wondering, an oil change every 15K miles, does that sound correct? It just seems like a lot of miles to go between oil changes.
There are lots of opinions on the proper oil change frequency. I change it every 8,000 miles in my wife's 2004 X3 2.5, primarily because used oil analysis indicates that the oil's additive package is almost depleted by that mileage. Other have good luck with the 15,000 mile interval, but not me...