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Old 03-14-2009, 02:58 AM
whunter's Avatar
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,357
6010700646 Diesel fuel return valve/banjo bolt

Fuel injection pump starvation with good a good lift pump is becoming more common as the bypass valve spring gets weaker with age.
A weak bypass spring allows too much lift pump pressure to flow back to the fuel tank = starving the injection pump for proper fuel volume.

The solution is to install a new (or good used) bypass valve for your engine application.

Diesel fuel return valve/banjo bolt, back of injection pump by engine block, at nylon return line going to fuel filter housing.

MB# 6010700646 n=6010700646&I1.x=7&I1.y=10

Application list:

OM601. 913, 942, 943, 970

OM605. 910, 911, 912, 960, 962

OM606. 910, 912, 961, 962, 964

You should replace the banjo bolt/valve seal rings at this time.
Two options, VIN# needed to determine the correct ones.

Seal ring
MB# 0179972248 n=0179972248&I1.x=12&I1.y=9


Two of the following
Seal ring
MB# 007603012102 n=007603012102&I1.x=5&I1.y=7

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Last edited by whunter; 10-15-2012 at 10:16 PM.
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