Hello

This week-end i was working on my 300sd
I changed the nozzles and blocked the EGR valve (for track testing...)

I put everything back togheter but my fuel return lines leak a bit of diesel
can i simply remove them and block the return on the injectors ?
did i miss something when i put them back ?

for the egr can someone tell me where the little line goes ?
(the one on top of the EGR valve)

should i see some improvments in performance or economy ?
or only less smoke from the egr ?

My old nozzles seemed cooked on the inside is that normal or something went wrong with the previous owner ?
i changed the nozzles on my Jetta 2001 at 100k for bigger ones and the tip wasn't that messy.

my 300sd has 414k km

next big job:valve clearence

Fuel return lines can not be blocked.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/

I tough so
i was dreaming in color
i'll go get new lines and fixe it the proper way