What about a delivery valve not moving properly? A broken spring or the valve wedged in its space?

LarryT
91 300D

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From: "Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC,53310" <meade.m.dil...@navy.mil>
Sent: Wednesday, October 21, 2009 7:28 AM
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Subject: Re: [MBZ] 87 300D, why does it miss when cold

That's a good point, I think that a damaged or partially plugged
injector line could cause problems like this, but it would be a pretty
rare event.  Worth looking at.

Max

-----Original Message-----
From: mercedes-boun...@okiebenz.com
[mailto:mercedes-boun...@okiebenz.com] On Behalf Of Peter Frederick
Sent: Wednesday, October 21, 2009 12:56 AM
To: Mercedes Discussion List
Subject: Re: [MBZ] 87 300D, why does it miss when cold

One more thing to check -- make sure the injection line from the IP to
the injector is not rubbed badly -- I had a rough idle and some knocking
on #6 on my "new" 300D until the line rubbed through last Thanksgiving
on the way home from Ft. Wayne.  Diesel fuel everywhere, what a mess.

However, with a new line in place, the injector knock vanished over a
month or two, never hear it now, and i have a nice smooth idle, too.

I think the badly worn line bulged during injection, so that the actual
opening of the injector was delayed.  Smokes less now, too.

Peter

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