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vacuum leak
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  1. E90/E91/E92/E93 (2006 - 2013)
    Hey guys. I hope y’all are doing well. I recently changed the oil filter housing gasket, PCV Valve cover (and gasket), high pressure fuel pump (the new one didn’t fit the old one’s sensor, so I had to climp the adapter) lower radiator hose, and mass air flow sensor on my n55, and now my car...
  2. E60 / E61 (2004 - 2010)
    Hi guys, having some challenges with the car. - Checked vacuum lines, seems fine (vacuum pump gives and holds 28 in/HG Vacuum in the line) - Changed the 3 solenoids The on/off for Compressor bypass plate The variable for Turbine Control Valve The variable for Wastegate...
  3. E90/E91/E92/E93 (2006 - 2013)
    Ive recently been looking at a vacuum leak, and have come to the conclusion that it may be something to do with my egr valve. All other egr valves I have seen on other cars have a vacuum line or electronic controller to control the valve. However It seems the Egr Valve used on the N51 engine...
  4. E90/E91/E92/E93 (2006 - 2013)
    Hi everyone, I've been trying to solve vacuum leak codes for a while. I have been hearing a vacuum leak when around 2500-3000 rpm. The dealer blamed my cold air intake for the codes and performed a smoke test with no results... However I never had any issue with the intake before, and now i get...
  5. E46 (1999 - 2006)
    I have been having a problem for the past 6 months, where I have been getting miss fire on 1 bank 3 cylinders at idle. When I am driving, I can't tell if the miss fires are present and car feels fine otherwise. My mechanic explained that it could be a vacuum leak. Car is a 2004 E46 330i...
  6. E39 (1997 - 2003)
    I have recently acquired a 2002 530i from my sister. It had been parking in her garage for 4 years and she didn't want it anymore. When i asked her what kind of work it needed she was clueless and just said "it ran bad". I towed it to my garage and popped the hood, I then found that the engine...
  7. E63 / E64 6 Series (2004 - 2010)
    Hi there, Ive been having problems with Engine Warning Light, that I thought I had traced to a MAF Sensor. My original Sensor throws up codes such as: 1). Original Sensor Carly for BMW - detailed Fault-Code Log Found Faults: --Engine / Motor-- *** 2D06:Air-mass system *** Fault-Set 1 - (...
  8. E39 (1997 - 2003)
    Hello, I feel like I have enough random symptoms, that i need to start a new thread. 2000 BMW 528i 94000 miles owned for 8 years. Recently replaced secondary air pump--sounded like a jet, secondary air pump valve--bad advice, and one of the o2 sensors--up top near front of engine, and valve...
  9. E39 (1997 - 2003)
    I've got to vent my experience and it might help someone here who is having a similar nightmare. My 2000 E39 528i with 265,000 miles ruptured the composite upper heater line while idling in the drive on a hot day in early July. My normal tech was on a week long vacation for the Fourth of...
  10. E60 / E61 (2004 - 2010)
    Sorry for the long story....I just want to give you guys as much information possible. So I finally completed my coolant transfer pipe / weep hole leak repair. Coolant system was pressure tested before I put everything back together. I replaced all of the intake gaskets (8 on the TU engines)...
  11. E46 (1999 - 2006)
    I have a 2000 328CI with manual trans. I've seen a few posts on this topic but saw no good solutions. Car has alway run perfectly. Recently, having intermittent stalling issues when coming to a stop and pressing the clutch. When you hit the clutch, RPMs bounce up a bit and then drop to 500...
  12. X3 E83 (2004 - 2010)
    Hello everyone, I have been reading about vacuum seals and such on the website and am confused. I keep seeing videos of people pulling off their oil caps and there is a ton of suction, what does that indicate? It seems like they are suggesting a leak is somehow causing excessive vacuum...
  13. E39 (1997 - 2003)
    I have this code that shows on my scanner: e4 fuel trim bank 2, per missible range exceeded. I have changed the following parts with OEM parts: All 4 oxygen sensors All spark plugs Both Camshaft position sensors MAF sensor Gas cap fuel tank breather valve DISA valve flapper intake boot Valve...
  14. E39 (1997 - 2003)
    So during my timing chain guide adventure for my 03 540i I took the opportunity to get another set of valve covers, powder coat them, and get all shiny. Seems like I got a later year 740 cover vice the 540 as there is a "slight" difference that I failed to notice until now... Can you see it...
  15. E60 / E61 (2004 - 2010)
    So I recently did some work on my beamer (n52 engine). I had to fix an oil leak and replace the crankshaft position sensor. As many of you know that sensor is a S.O.B and you must remove a lot of stuff to get to it. So along the way replaced any gasket that I came across and a couple of...
  16. E36 (1991 - 1999)
    Hey guys, as the title suggests my 318ti has a weird idle going on which you'll hear in the video. It also has positive pressure pushing from the oil cap when removed, and the rpm's drop drastically. I believe my culprit is a faulty pcv valve, but any other ideas are welcome. I can't find any...
  17. E90/E91/E92/E93 (2006 - 2013)
    Hi, Took car into mechanic to get my inspection done. Only to find that my car wasn't ready for emissions testing which is required here in New York. Mechanic told me to drive it a couple miles and come back. I drove about 250 miles only to have the service engine light come on. Code p140A...
  18. E39 (1997 - 2003)
    I have a 2002 530i that runs great, until it feels as if the gas isnt reaching my engine properly, and causing it to lose acceleration drastically until eventually spitting and sputtering to a stop, im thinking caty converter, diagnostic recommended i inspect exhaust system and cat, and spit...
  19. E36 (1991 - 1999)
    Hey there! I'm delving into a project 1996 e36 328i that has an extremely rough idle and has a series of codes coming off of it. I've broken it down into a couple of suspected problems. Any info is much appreciated! Codes: - Vanos mechanically stuck Intake air temp. Sensor...
  20. E90/E91/E92/E93 (2006 - 2013)
    i am having issues with my e93 08 335i 76k on rough cold starts, i have pulled the plugs and check for smell and "leaks" and nothing, they all seem ok. New plugs and walnut blast done less than 10k. it only happens if i leave the vehicle off for longer than 24hrs, the moment i turn it on, it...
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