I have bmw 740i year 1994, few days ago, when I started the engine, all of the sudden, the fuel drops like rainy underneath the driver seat. my question, what is it actually happned ? what should I do as an emergency action. I am afraid it will set a fire. thanks

There is a metal line coming from the fuel pump/filter assembly. This line runs up under the hood to feed the fuel injectors. It sounds like a crack has formed in the line routed under the seat by way of the frame. They can precisely cut the line to have 2 clean ends. Place the brass crush fittings and flare nuts onto the lines. There is a centre fitting and both ends get screwed to this one centre piece and seal the line which if done properly can be just shy of a permenent fix. The only other fix is to replace the entire line which can be pricey and take some time. There is a metal line coming from the fuel pump/filter assembly. This line runs up under the hood to feed the fuel injectors. It sounds like a crack has formed in the line routed under the seat by way of the frame. They can precisely cut the line to have 2 clean ends. Place the brass crush fittings and flare nuts onto the lines. There is a centre fitting and both ends get screwed to this one centre piece and seal the line which if done properly can be just shy of a permenent fix. The only other fix is to replace the entire line which can be pricey and take some time.

This could run a few hundred dollars to get the line from BMW and then have them replace it. These are beautiful cars and I am always one for doing it proper. This suggested repair will work and not create any issues when done right. They should be able to do this repair without creating any grief for you. I would not perform this repair on a brake line but have done several for fuel lines without issue. This could run a few hundred dollars to get the line from BMW and then have them replace it. These are beautiful cars and I am always one for doing it proper. This suggested repair will work and not create any issues when done right. They should be able to do this repair without creating any grief for you. I would not perform this repair on a brake line but have done several for fuel lines without issue.