PeachParts Mercedes-Benz Forum - View Single Post - Confounded! Very little power in my '78 300D

whunter · #48 04-04-2013, 03:21 PM

Quote:

Originally Posted by Phil_F_NM

Could my nailing be due to fuel delivery?
I have what I think is the original lift pump with the original push/pull type primer pump and I've read these both will suffer with age and if one of the diaphragms in the pump is getting stiff or corroded perhaps this is my nailing issue.
I ask because the nailing usually occurs only on accelleration at high RPM, right before a shift. If I'm driving at high RPM on the highway (about 65+) the nailing ceases like the pump has caught up with itself.
Any thoughts on this?

Phil Forrest

It is very possible.

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You may also need the first item here.
REPAIR KIT
MB# 0000900210
OM617.951 and .952 Lift pump Repair kit W126.120 300SD W123.133 300D

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