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If fuel flows readily from the tank when the level is where you have a problem the problem probably isn't in the tank.
The accumulator stores fuel pressure as is not needed except for hot restarts. It is not designed to hold pressure over night and from a cold start plays no part in running. It also plays no part in running at any time. Its purpose is to hold pressure on the injectors and prevent fuel boiling and vapor lock when the car has sat for a short period HOT.
The fuel pumps are usually replaced as a pair if the delivery pressure and volume are not up to specification.
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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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