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Old 07-16-2003, 12:18 AM
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Location: Merced, CA
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Regeneration valve

Two dumb questions: (1) Does my '84 380SE have a fuel tank vent valve (aka regeneration valve)? and (2) If it does, where is it? I've been having some problems on cold startup, and I was wondering about this valve. Never had anything done with it, so it occurs to me that maybe it's time I paid it a little attention. Thanks, all.

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Old 07-16-2003, 08:27 AM
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Location: Gainesville FL
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Regeneration valve, better know as a purge valve. Such a valve didn't get used until EFI systems LH and HFM.

The purging of the charcoal canister did have a vacuum operated valve in the 380s. The cannister was near the radiator on the drivers side and had a dashpot type valve that allowed air to be pulled over the fuel soaked charcoal during part throttle accelerations. To test plug the line from the valve to the intake and verify that the valve holds vacuum.
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Continental Imports
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Bosch Master, ASE Master, L1
33 years MB technician
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Old 07-16-2003, 01:39 PM
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Thanks, Steve.
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Old 01-22-2011, 07:04 PM
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Join Date: Apr 2005
Posts: 22
OK I need help Have been running around the web to find NO answer
here is problem
fuel tank wont take gas
have been told this is caused by a stuck fuel tank vent valve (regeneration valve) my car is a 94 e320 coupe where is this valve located on this car have read it is in left rear wheel well abopve axle and also in left front wheel well above rubber flap where the charcoal canister is supposed to be help me find this part I am tires of chasing my tail
thanks
hal steiner hals1239@gmail.com

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