[jaydeep]

I have vacuum leak on my 02 315i. I am going to look at intake but where else to look for a leak? Is there one on passenger side of engine bay?

 

[peytonracer4]

All the intake/vacuum lines are on the drivers side

 

[CylonRed]

DISA valve\gasket, CCV (crank case ventilation) tubing plugged up, MAF sensor to name a few more places to look.

 

[ShepsBMW]

P0174 and/or P0171 codes? Everyone's got em these days, myself included. Still can't find the GD leak

 

[Lemonsqr]

How do you know or assume you have a vacuum leak? The best way to find out is with a smoke test.

 

[dmax]

Evap, brake booster, fuel pressure regulator, all run on vac lines too...oh, and probably ccv too (not 100%, but there is a ccv hose on the intake air runner.

 

[bobtoronto]

315i? u have bigger problems - think you're missing at least 100cc

 

[ShepsBMW]

315i? u have bigger problems - think you're missing at least 100cc

:evil:

 

[Zach1111]

Smoke test.

 

[Zchild]

+1,000,000 "Smoke Test"...

 

[bmwFreakazoid]

Where do you connect the smoke machine? To the break boster hose? Where is it located?