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1999 E320 fuel tank issue

E-Class (W210) 1995-2002: E 200, E 220D, E 240, E 290TD, E 300TD, E 200, E 240, E 280, E 320, E 420, E 430 (Wagon, Touring, 4Matic)

1999 E320 fuel tank issue

Old 03-14-2019, 05:23 PM
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1999 E320, 2008 GL320CDI
1999 E320 fuel tank issue

To add fuel, I have to add very slowly to keep from shutting off. After a few gallons, fuel leaks out under the car near the right rer wheel.
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Old 03-14-2019, 05:44 PM
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1999 E300TD
Put the car on a lift and localize the leak----what is it a gasket or seam leak-----then replace
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Old 03-14-2019, 06:55 PM
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To be helpful there is a "charrcoal cannister" and "shutoff valve" as part of the tank system - think of it as a fuel-fume-recovery system.

If someone has been "overfilling-the-tank" - meaning putting more gas in after the gas pump shuts off - that canister can fill up with fuel - or there can be problems with the shutoff valve itself - or corrosion in the electrical connection going to that valve - or brittle/broken hose connections - etc - usually detected visually or with a "smoke test" (not as scary as it sounds

A older post can give you better visual insight to what these components are..


A used/returnable charcoal canister can be found on eBay - same with "used" lines - or "used "valve".

Good luck !
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wdascher (03-15-2019)
Old 03-15-2019, 05:47 PM
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1999 E320, 2008 GL320CDI
You have been helpful. Thanks, I have exposed the charcoal canister and valve as well as the tank and filler line. Nothing obvious wrong; no leaking hoses or collapsed tank ( heard that can happen if vent occludred )
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