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Gas smell in trunk/high tank pressure. 700 1990

I have a 1990 740 GL that has a strong gas order in the trunk.

Also, there is high positive pressure released whenever the gas cap is being removed.

Now, the interesting part....this car was in an accident and the tank neck was bent, not cracked but just creased.

There is a tube located near the trunk sidewall that appears to be in good condition, however, there is a smaller hole that somebody tried to cover with some cheap calking.

I resealed using a screw and industrial epoxy, problem solved...no.

I can't help but think that smaller hole is supposed to be used for ventilation of pressure, perhaps into the intake manifold??

Any suggestion would be greatly appreciated.






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