PeachParts Mercedes-Benz Forum - View Single Post - Air in the fuel system, car sluggish then died.

Chad300tdt · #6 12-09-2008, 04:43 PM

Hey Dave,

When I had a similar problem it was rotted fuel lines above the subframe. I ended up cutting out the section of hard line and replacing it with rubber fuel line from the tank to about under the driver seat and used the old hard lines as a bracket system to zip tie the rubber lines to. The leaks started out small enough that they just let air in and caused a nuisance. Then they got a bit larger over a few days and I saw a few drips on the garage floor. Once replaced, all the problems were gone.

Also, my expansion tank was cracked and all 3 nipples were broken off and it didn't cause any performance problems. It just caused diesel to overflow through my spare tire well when the fuel expanded due to having my space heater on high in the garage while working on the wagon last winter.

A new plastic tank is $120 from the dealer, but I'd look for an early w123 metal tank if you need one and can find one.