The front injector on the engine in my 300D is leaking, and I am going to replace it. The car has a 602 motor. What is the torque specification for the injector and the two fittings that hold the fuel line to the injector and the pump? Thanks in advance for the help.

__________________
Ben

The MBs:
1976 300D (W115) - 330K and still going (sort of)
1991 300D 2.5 Turbo - Sold at 221K
1983 280SEL - Sold at 206K
1981 300SD - Sold at 232K

The injector torques to 60-65ftlbs. The fuel lines use crush seals & there isn't any listed torque spec.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Is the torque spec the same for an OM603 (3.5)

You didn't mentinon what kind of leak, and your symptoms, so..

For What It's Worth:

If the low-pressure fuel return line (braided rubber) leaks, it will leave your injector(s) looking wet and smelling like diesel. It's a simple fix. One meter of fuel line from FastLane or the local dealer, a pocket knife, some patience and the line can be replaced. Then the injectors no longer look wet.

Guess how I know? My #2 started leaking, was wet and I could smell diesel inside the car. The lines just pulled off when I grabbed them, so they were all a bit loose. Replaced all that were loose, and it's nice and dry now.

Best regards,
Jim

Hello,
I am having a similar problem with a leaking injector on a 1984 300SD.
The fuel lines are tight, the overflow lines are tight, and I replaced the seal under the injector and it still leaks.
It appears to be coming from the center of the injector where the two halves are joined together.
Can this be fixed or is it better to just replace the whole piece?

Thanks

Danny