injector return lines

[cestes]

Hi,

I just purchased an '83 300 D Turbo. I'm really impressed with the car and how well it rides and feels especially considering how old it is.

This is my first MB and my first diesel, so it's really a learning experience.

I've noticed a strong fuel smell and I've noticed that one of the injector return lines is moist, and the associated injector is wet with a little fuel running down the engine block from that area. It's not a lot, but everythign is a bit moist. From what I've read, I need to change the injector return lines, which looks like an easy-enough job.

QUESTIONS: Do I have to get the original MB part? Does my local AutoZone have something I can use? What's the ID of the tube? etc.?

I'm happy to use the right part, but I want to to it today, as it stinks and is giving me a headache and sore throat (it rained this morning so the sunroof was closed and the windows mostly up!).

Thanks for any info!