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W463 G55 AMG small evap leak & check engine light

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W463 G55 AMG small evap leak & check engine light

 
Old 08-13-2018, 09:09 AM
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2009 w463 g55 amg with g63 face-lift
W463 G55 AMG small evap leak & check engine light

so i had that annoying CEL light up. I had code tested and it was P0506 or small evap leak. after changing the canister and some purge valve at a cost of about $300 the light still continued to come on after 50 miles. the technician then did another smoke test and could not find the problem. the boss then came in and held a mirror behind the gas tank filler neck. and it was obvious it was leaking. unfortunately that part (gas tank neck filler) is expensive. $800 from dealer but you can get for $560 on oemmbparts.com. then it was an hour and a half labor rate for installation. CEL has not come back on yet after 500 miles. If i had to do it over, i would just check the fuel tank filler neck to begin with instead of the "swap parts until you get it right mentality". hope this helps.
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Old 04-07-2019, 07:00 PM
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1985 500SEL
Just got the same code. Thanks for heads up...




Originally Posted by Ben Stoller View Post
so i had that annoying CEL light up. I had code tested and it was P0506 or small evap leak. after changing the canister and some purge valve at a cost of about $300 the light still continued to come on after 50 miles. the technician then did another smoke test and could not find the problem. the boss then came in and held a mirror behind the gas tank filler neck. and it was obvious it was leaking. unfortunately that part (gas tank neck filler) is expensive. $800 from dealer but you can get for $560 on oemmbparts.com. then it was an hour and a half labor rate for installation. CEL has not come back on yet after 500 miles. If i had to do it over, i would just check the fuel tank filler neck to begin with instead of the "swap parts until you get it right mentality". hope this helps.
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