DMTL leakage code

Old-Duckman

Member
SW Pennsylvania USA
When the car is in warm/hot (outside temp) on start up it stumbles. Usually just letting it idle a bit or giving it a bit of accelerator pedal smooths it out and it runs fine. Sometimes the stumble is more pronounced and doesn't recover as quickly though never more than several seconds.

Ran a quick Peake reader check and got two codes: 1 - function-check tank venting 2 - DMTL: Leakage.

Last August it was constantly clicking off the pump at the gas station...took forever to fill the tank & I got a "gas cap" light on the dash. Called a local car talk show and they said I needed a fuel tank breather valve. I bought a URO Parts replacement and that cured the fuel tank filling problem but I am wondering if this current problem is basically the same issue?

The URO part was 1/3 the price of a BMW part...I am wondering if it was false economy and a BMW part would fix the starting issue.

Any ideas?
 
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