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What makes vacuume leak for z3bmw - Z3 BMW Cars & Trucks

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Hose off somewhere follow all vac hoses from manifold to destinations and make sure they are not broken/cracked and are connected

Posted on Nov 27, 2012

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I just had a diagnostic ran on my car and was told I had a vacuum leak. I drove it for a couple of days and when I got home the car stopped but the radio and lights were still on


The vacuum leak will make it run poorly also sometime the vacuum leak shows up when it is actually the seal on the fuel cap not sealing properly. if the car shut off with the key still on then it indicates the vacuum leak could be enough to make the fuel mixture too lean to run at idle

Nov 06, 2015 | 2006 Nissan Maxima

2 Answers

Actuator not getting vacuum


look for a leaking vacuum hose or one tat is no longer connected to the engine intake manifold.

Apr 02, 2015 | Cars & Trucks

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I change the distributor cap and rotor button on a 91 ford f150 that was idiling real high and missing and would not stay started and now it seams worse


Check for vacuum leaks you can use carb cleaner while its running spray around vacuum hoses and ports if you have a leak it will change the way its running when youare close to the leak it may even make the engine stall or week fire maybe coil bad try vacuum first

Jan 02, 2015 | Cars & Trucks

1 Answer

Burn oil after a long trip


engine burning oil could have worn piston rings.worn valve stem seals or engine oil return holes stopped up.could have faulty pcv valve.make sure pcv getting vacuum remove pcv while engine running should feel vacuum if not pcv faulty or pcv vacuum hose disconnect or broken.check where you park your vechicle if you see oil spots engine has leaking pan gasket,valve cover gaskets could be leaking oil and the front crankshaft seal or rear main seal could be leaking oil.check make sure oil filter hand tight and check oil pan drain plug make sure its tight.

Dec 28, 2012 | 1998 Ford Windstar

1 Answer

CORVETT POP UP LIGHTS Hi I have a 1977 corvett stingray. Do you have any ideas as to get the vacume system on the pop up lights to work correctly. They sometimes will go up, 1 at a time but very


The first thing , this system works on vacuum there are vacuum lines that run from intake to storage can or cans then to light switch inside car then back out to headlights,

i would first start by starting the car and listen for vacuum leaks, you may want to follow the vacuum line form the motor checking for splits or cracks in the lines, listen around can, this can sometimes rusts and leaks vacuum, this can or cans are intended to store vacuum and use it when needed, if they are leaking then the lights will work slow until there is enough vacuum to open them, this goes the same for a bad vacuum line and light switch, the light switch is a two part switch, one part supplies power to lights and the other part is vacuum to open lights.

you will need to listen for a vacuum leak inside the car at the switch, (headlight switch) .

Make sure all lines are good and have no leaks, you will need to make sure the hinges to lights are free and not binding up.

Aug 12, 2012 | 1977 Chevrolet Corvette

1 Answer

Have a vacumm leak on my 2001chrsyler sebring coupe 3.0


I have a similar response, but if you hear a high pitched noise like a whistle it is possibly a Vacuum leak. You may be able to test the different Vacuum solenoids and the EGR with a handheld Vacuum pump. On some cars, the tubing from the exhaust pipes can make a noise on what some call "Backpressure pipes".

There are vacuum lines running under the dash as well. Any open and leaking lines can affect the settings of a running engine.

There are not too many monitoring sensors for Vacuum, so you may not benefit from a scanner.

Jul 16, 2012 | Chrysler Sebring Cars & Trucks

1 Answer

My 1998 expedition with the 5.4 triton runs rough at idle but clears up when driveing down road I know I have a manifold leak and the previous owner said it was a coil pack, however after I had advanced...


If you have a manifold leak that will cause a MASSIVE vacuum leak and make it run rough at idle only. Look at your short term fuel trims with a scanner, if they are way negative you have a vacuum leak. Fix the intake manifold leak and that will fix your problem.

Oct 06, 2011 | 1998 Ford Expedition

2 Answers

I asked a question and I was given this answer; 'when you say pump you mean fuel pump make sure you have no vacum leaks under hood'. however i don't know what 'under hood' means. thanks


that just means in the engen compartment/ where your motor is loacated

  • Connect a regulator to your air pump. It is important that you keep the air intake regulated at about 3 pounds. Too much pressure could cause even more vacuum leaks.

  • 2

    Turn off you automobials engine. Attach the hose from your air pump to a part of the vacuum fitting, so air pressure can flow into the intake manifold. Begin to apply air pressure.

  • 3

    Spray soapy water onto various areas where your engine vacuum may have sprung a leak. If you see bubbles forming, that means air is being forced through the wrong place, and you have found your leak.

  • 4

    Check other engine vacuum areas with the soapy water as thoroughly as possible to make sure you do not miss any leaks. It would not be surprising that there could be more than one leak in the vacuum. While you have the air being forced through and your soapy water ready to go, find all the vacuum leaks at once and save yourself the time and hassle of having to do the whole process over again.

  • 5

    Mark any vacuum leaks with a Sharpie or paint to make sure you can find them again. There are a several parts that may need replaced to fix a leaking vacuum. Once you have pinpointed any leaks, your next project will be fixing them. and O'reillys or auto zone both carry varrious sizes of vac. lines.

  • Dec 11, 2010 | 1999 Chevrolet Blazer

    2 Answers

    Loud whistle noise from my 97 dodge ram 1500 sprayed brake cleaner around engine for vacuum leaks but didn't hear any change in idle, so confused.


    sounds like a vacuum leak. spray w-d 40 around vacuum hoses to find out. intake manifold might be leaking or sucking air as well use w-d- 40 there as well. if it has a turbo charger it may be going out. water pump, alternator and belts can make winning noises as well.

    Jul 07, 2009 | 1997 Dodge Ram 1500 Club Cab

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