|
|
|
Q: I own a 2007 BMW 3 series. The check-engine light came on, and the shop scanned the computer and found an evap p0456 small leak. The shop spent a lot of time using a smoke machine. Two of the technicians worked on the car for three hours and could not find the source of the small leak even though the smoke machine confirms there is a small leak and have narrowed it down to the gas tank. Without seeing any smoke they do not know what more to do. The shop is out of ideas, do you have any?
A: We see a lot of evap leaks. Some we can find with the use of both a scan tool and smoke machine, and others are not so easy to find. We have found using a soap and water solution all over all the sealing gaskets and plastic lines can usually help find the leak.
- Junior Damato, Talking Cars columnist
