Fuel leak
 

I have a 2005 545I with 215,800 miles. Recently I found a fuel leak where the fuel line connects to the fuel rail. It's a quick connect. Is there an O-ring there than can be replaced.

There is no o-ring at that connection.
One way to go about fixing that leak is to replace that funky connection with generic connection.
Or, replace that hose from the fuel rail to the connection up to the drivers side strut tower.

#8 in the attached picture. This is for 530i. Yours may be slightly different; but the connector is the same.

Unfortunately, the N62 V8 fuel line (from the quick connect coupling) is part of the entire fuel injector rail. There is also no o-ring, so you would either have to buy the entire fuel injector rail, or find some way to repair the connection.

Can I cut the connection out and secure the connection with a hose clamp.

Yes.

Below pictures were posted by 'H_F' in another forum. I am posting them here to give you an idea...

I went to the parts store and the young man didn't think this would work. what do you think. Thanks again everyone.

If you are inclined to do work arounds like this on your car, then don't see why it wouldn't work. The 545 is a low pressure fuel injector system unlike the hpfi systems of the direct injection units. You are looking at 5-6 bars of pressure in the system. A properly sized barbed connector with 2 clamps on each side should be more than adequate. Or you could get a pair of Parker barbed connector, one male and one female to insert into the fuel line.

Just think about it for a minute. There are garden hose repair kits that look the same as what pcy shows. House water pressure is like 40 psi and up. 545i is a low pressure fuel pump. As long as you are using fuel line hose and fittings suitable for gasoline, you are fine to rig it up. Or, if that makes you uncomfortable, replace the broken part completely.

This is how I fixed my leak .. The pictures PCY posted are the first fix I did to get out of the situation which did stop the leak and it did work .. I then updated the repair cause I was just not happy with the way it looked... Here are the new pics and parts you need . You can find the quick connect at NAPA and they also carry them at O Reileys .. Since I fixed it it has not leaked again . There has been three other members on other forums that have done it with 100% success . One member did have a bad connector and leaked but returned it and the second one did the trick and was fine . I did end up putting two clamps on the new quick connector i recommend it if you decide to go with this fix..

Also so you dontt have to cut the original lock ring in half like I did cause the new one is thinner . Here is the part number for a new lock ring NAPA p/n 730-5729 , Advance and Auto Zone use Dorman p/n 800-189

Here is my thread on it if your interested .

Gas line leak. - Bimmerfest - BMW Forums

Look good. Nice to know you can use this other part.