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#21
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The 3.0 version of e53 should run the fuel pump for about 6 seconds at key on. Note that the pressure does not drop before I crank the engine. The comfort start models act differently and maybe your 3.0 has the more advanced start. (you can tell because the car will keep cranking when you release the key from crank position). In any event the video above is after replacing the FPR. The bad FPR had the shaky needle at idle. Had handfuls of odd random misfire and occasional long cranks before the replacement. After replacing the FPR the needle was rock steady at idle. At the autopsy was when I discovered the o-ring was toast and almost certainly the only problem. I could have just replaced 30¢ o-ring vs. $75 fuel filter plus FPR. I didn't mind though the fuel filter was getting pretty full. Cut that in half to check and yeah it did it's job charcoal colored fuel on the dirty side it was very dirty. I think the odometer was about 160-170,000
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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#22
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If you haven't realized already, andrewwynn's vibrating needle, FPR o-ring theory is a load of crap.
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1988 325is (purchased new) sold 2004 X5 3.0 2005 X3 2.5 2008 X5 3.0 (new to me) |
#23
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Except it's exactly what happened. Those are the before and after videos from FPR swap and the only defect found post mortem was a horribly defective o-ring.
I am in fact correct far more often than I'm wrong. Prove me wrong. Fluid only flows from high to low pressure very simple laws of physics. FPR works by having excess pressure that is held back to release a regulated pressure. This means there is higher pressure coming from the pump than is coming out of the FPR. If there's a leak in the feedback it's not going to function as designed that's exactly what I measured. If you have a better explanation for the measured results that came along with a fixed car then share them and be less of a ass while doing so.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#24
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The air intake runners show no sign of oil. Right where the runners connect to the side is where the seam can leak.
The inside looks normal for a high milage intake. I was surprised how clean mine was except for the DISA area. Locally, a shop charges $125 for a smoke test.
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'06 X5 3.0i - bought @143,123 miles (12/26/20) |
#25
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My money is on an undetected vacuum leak…
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'03 530i - manual swapped - 425k miles '06 325Cic auto 115k '05 X5 3.0 auto 158k '99 E39 528i 5-speed 130k |
#26
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you can get a decent unit for $100+, but you'll need peripheral equipment
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I'll have to get a sealing bladder to keep the smoke in (unlike Lucas Electric equipment, famed for letting the smoke out, haha). That'll add another $25+ to the $101+ I bought the tester for (Black Friday deal, plus I got Amazon to throw in $25 credit, due to the fiasco caused by my previous two tester orders...it was a differnt brand). So, in all, I will have spent $101 for the good tester + $25 for the sealing bladder I'm ordering, minus the $25 I was credited...equalling $101 for the complete test outfit I'll use. Of course, the same tester is up to $120 now, + $25 for the bladder ($145 total), but that doesn't include a compressor at home (which I would assume most of us DIY'ers have, mines a Husky 20-gallon), but I'm not adding that into the cost to test. If one doesn't have a compressor already, Autoline offers the same tester, but it has a small air supply attached, for another $10 @$130 (bringing the cost to test up to $155). So, why didn't I get my BMW tested at a pro shop?
I could be wrong, and might never find any leaks, nor have to repair Evaps again, but at least I'll have the gear, which I can pass on, later, to friends or relatives.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#27
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Some less common air/vacuum leaks on the M54... one or sometimes two small vacuum caps on the rear of the intake manifold; they split and fall off. The tubing/vacuum valve that controls the secondary air pump is also back there. Dipstick o-ring where it enters the oil pan. The vacuum tube leading to the fuel filter/FPR splits; this leak will only be visible under the car. Any/all of the CCV hoses can crack.
I have a $50 smoke tester; the paint gun+regulator type and it works great to find leaks.
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12 E70 3.5i xDrive 03 E46 330i ZHP 01 E53 3.0i 98 E36 323is 12 Audi A4 Quattro 79 Triumph Spitfire 73 MGB |
#28
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Quote:
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'06 X5 3.0i - bought @143,123 miles (12/26/20) |
#29
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+1 for "paint gun+regulator type" smoke testers
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I also couldn't see down to the dipstck O-ring connection, but I had a close look at the DISA, ICV, intake manifold (with the cover still on, unfortunately), and the flexible air intake tube, and saw zero leaks. I did say that I had 10+ minutes of smoke before the glove split, but that was probably closer to 3+ minutes, in actuality. Not enough time or smoke for a detailed exam. I'm pleased with my Autoline $100 "paint gun+regulator type" smoke tester, used in conjunction with my 20-gallon air compressor, but the 4-mil Nitrile gloves just weren't working well enough in this application; a purpose-built "Universal Bladder Adapter" should solve the sealing problem. I will still have to remove the cowl cover. though, to be able to adequately view the rear of the engine, especially the two caps and the SAP vacuum control valve back there..
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01 BMW X5 E53,3.0i-5L40E, 7/13/01 topas-blau,Leder-grau,"resto-project car" Here: 14 Lexus ES350,3.5L-U660E 09 HHR Panel,2.2L-4T45E 04 Chevy 2500HD,6.0L-4L80E 98 GMC Sierra 1500,5.7L-4L60E Gone: 66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake 08 Cobalt Coupe,2.2L-4T45E 69 & 75 C10s,350c.i.-TH350 86 S10,2.8L-700R4 73 Volvo 142,2.0L-MT4 72 & 73 VW SuperBeetles,1.6l-MT4 64 VW,1.2l-MT4 67 Dodge Monaco 500 2dr ht.,383c.i.-A727 56 Chevy 210 4dr,265c.i.-PGlide |
#30
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You can double/triple the glove
Sent from my iPhone using Tapatalk Pro
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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