Is this a vacuum leak?

[1st3series]

Here is what makes me think its a vacuum leak
---'97 540i auto

1. Power seems to be decreased running off the line.

2. RPM's arent moving as fast as they once where

3. MPG gauge at bottom of RPM gauge seems to dip low as I come to a stop and doesnt go all the way back to "40" as I let off gas
This gauge is connected with vacuum IIRC

Does this sound like a vacuum leak problem?

[Poolman]

Those are good symtems of a vac leak---check your hoses and try to listen for the tale tale hissss of air and try to find where the leaks are---makes a dif in power and fuel mileage.

[BMW 528]

Smoke test is the best.

[1st3series]

Those are good symtems of a vac leak---check your hoses and try to listen for the tale tale hissss of air and try to find where the leaks are---makes a dif in power and fuel mileage.

Yea saw about a 1.2 drop in MPG but that could also be contributed to colder weather (denser air in intake)

How much should a vacuum leak run me, cheap right?:conf:az

Anything else this could be?

[noahtheviking]

yes I have had the same problems its does sound like a vacuum leak

[1st3series]

yes I have had the same problems its does sound like a vacuum leak

What was the cost to replace the hose?