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#1
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Smoke machine vac leak diagnosis?
It's not really throwing any codes, it just idles like 100-150 rpms lower than normal, probably around 600, at least compared to my previous M54, and there is a slight vibration with it that causes every manner of RATTLE inside the cabin. Door panel rattle, sunroof panel rattle, dash rattle. The rattles are small and irregular. Not everything rattles at the same time. And not all the time. The vibration is really pretty slight. If I hold the brake and press the gas and get the idle up by 100rpms, the rattles disappear completely. There are ZERO rattles in neutral and park. I do have a smoke machine but have never used it. What would be the best procedure to check for vac leaks with a smoke machine which would cover all potential problem spots?
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2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.19) -> 100k 9.21 --------------------------------------------------------------------- SOLD : ( 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.19) -> 205k (9.21) SOLD : ( 1997 328is Coupe - Hellrot Red SOLD : ( 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP |
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#2
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Don't forget that rattling at lower RPMs can also be worn motor, transmission mounts or in some engines (can't remember which) harmonic balancer issues.
Sent from Embassy network using Tapatalk
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"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course |
#3
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Adjust your idle up. I used my foxwell 510. Usually boost of 60-80 is enough to get rid of the red light in drive shakes. Car idled perfectly fine in neutral but shook enough I would put in neutral pretty regularly at red lights.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#4
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I use a rubber glove over the oil filler hole. Cut a tip of a finger off and tape the hose onto it, then rubber band the glove to the filler neck. Good luck!
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2004 X5 4.4 Build 01/04 Alpine White on Schwarz Dakota Leather, Anthracite Headliner Xtrons Android HU, SPORT PKG, COLD WEATHER PKG(W/REAR HEATED SEATS AND HEATED STEERING WHEEL), CONVENIENCE PKG, FACTORY HITCH |
#5
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Do you have a Foxwell, or similar scan tool?
Quote:
from another thread Quote:
Re: Smoke machine vac leak diagnosis? I've got a decent smoke machine, but the rubber glove trick (over the intake tube, in my test) didn't work, as my gloves kept tearing (medium size, 4 mil thickness) and leaked all the smoke out at that point. So, last week, I bought an AutoLine Pro Universal Bladder Adapter for $25, from Amazon, and will use that device to test with next time. It should do the trick. I may or may not have a vacuum leak, which so far, I've been hunting since October 2021.
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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 |
#6
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I would measure your short and long term fuel trims first... to see if you have a lean condition.
You can do it in INPA while the car is running and driving, but I use OBDfusion (phone app) with a wifi OBD2 reader...I learned this all over at E46fanatics... Here is one of several good threads over there: https://www.e46fanatics.com/threads/obd-fusion.1240733/ Once I determine I am running lean - which means more than +10% (-10% would indicate it is running rich) on long term fuel trims I will break out the smoke tester - stinger model that I use with an air compressor. I am not quite expert on smoke testing, but I am trying... I remove MAF and cover the rubber intake boot with a 7 or 8ML rubber glove and introduce smoke for at least 10 minutes in several areas including intake hose, oil fill, dipstick, and brake booster.
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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 |
#7
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Quote:
Sweet! Just ordered the Foxwell. Been meaning to do that for years. Keeping a laptop updated is just unsustainable. I'll try with the smoke machine trick as well. Really curious to see if I can find anything.
__________________
2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.19) -> 100k 9.21 --------------------------------------------------------------------- SOLD : ( 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.19) -> 205k (9.21) SOLD : ( 1997 328is Coupe - Hellrot Red SOLD : ( 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP |
#8
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It's never a bad idea and idle has the most vacuum but I don't think I'd mess with idle much. I just know I needed to bump both our e53 up a bit before idle waa smooth in drive not moving.
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#9
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does the NT510 really take like 5 minutes to "Quick Scan" all the modules? Looked that way on Youtube....and I thought BMW Scanner was slow. I haven't opened mine yet and would consider returning it for an upgraded model if the scan speed is faster.
Are some scanners faster than others based on the power of the Scanner itself or is everything limited by the early 2000s processing inside the OE BMW modules ?
__________________
2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.19) -> 100k 9.21 --------------------------------------------------------------------- SOLD : ( 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.19) -> 205k (9.21) SOLD : ( 1997 328is Coupe - Hellrot Red SOLD : ( 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP |
#10
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Quote:
Sent from Embassy network using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course |
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