P0440 in M113 R129 SL500

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P0440 in M113 R129 SL500

09-16-2018, 03:00 PM

jeebus31

Registered User

Join Date: Sep 2018

Posts: 7

Quote:

Originally Posted by ah-kay

The evap system is a close circuit. Any leaky hose will give the code, gas cap is one of the reason. The shop uses a smoke test to find the leak. It is not easy for diy. I fixed it by slightly pressuring the gas tank with compress air and hear for hissing sound. Not easy but I was lucky.

Thank you, this is helpful.

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