[notorious]

Thanks Ainars for clarification.

>> If fuel delivery unit is not seated properly
>> returning fuel just drops in tank and does not go to suction jet pumps.

Does it happen because they simply forget to connect something or because system should be 'airtight' for Bernoulli's effect to work and people just not assembling the damn thing with enough attention to airtightness? Would be great to know what error they make and how that error materialises.

Also, does the '2/3 tank problem' always appear as a side effect of incompetent repair? Can this problem appear on a car with no work done in the tank since new?

Thanks again.