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Fuel system hose plugged - B21F '79 200 1979

uid 27's pic
posted by  Art Benstein on  Sun Sep 8 14:28 CST 2002
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

A small hose dangles near the main fuel pump with a bolt securely clamped in its end. The other end of this hose is the fuel tank pressure relief port in the sender unit (short pipe). It is apparent the guy who changed the accumulator for the previous owner put the screw in this hose, because the tie wraps he used are distinctive.

The only reference to this I can find in the manual is one in the "theory" section suggesting it should connect to a "balance valve" along with the evap line from the filler pipe. That line runs through a check valve hidden in the trunk, but then proceeds uninterruped to the charcoal canister.

Symptoms: Pressure build-up in fuel tank on warm days. Emissions test paper had cryptic comment noted in fuel cap section.



There are no indications there was ever a line to the engine compartment beside the fuel feed, return, canister line and two brake lines. Any ideas? Did someone put the wrong accumulator in?

'79 244 118K
--
Art Benstein near Baltimore






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