YMMV There is no hard/fast time, as Herr Doktor said. A lot of it is
dependent on the quality of fuel used. Some diesel feels oily and other
fuel does not feel oily. I don't know that means anything. I know that
every once in a while, I get a load of fuel that runs better and gets WAY
better mileage. If you drive into a station and ask for the lubricity of
their fuel, you won't get any answer, and I don't know that lubricity can
be directly related to injector nozzle life. Seems like it ought to.
At 08:24 PM 5/15/2006, you wrote:
Thanks Loren -
I'm mostly worried about the 91 300D - my '78 240D is fine as is my
300D - I was asking mostly out of curiosity.
;-)
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
A Blood Test for your oil - www.youroil.net
For Test Results http://members.rennlist.com/oil
Weber Carb Stuff http://members.rennlist.com/webercarbs
http://members.rennlist.com/my_911/Index.htm For my Paint Job Info
----- Original Message -----
From: "Loren Faeth" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <[EMAIL PROTECTED]>
Sent: Monday, May 15, 2006 3:10 PM
Subject: Re: [MBZ] Fuel Injector Life
>I assume you are talking about your diesel. Even on OM 621 engines, the
> injector nozzles would last 150-200k miles. On my 603, I replaced the
> nozzles at 300k, on principle, not because I could prove they were bad. I
> would guess you should look for 300-500K on yours, based on better
> machining and better metallurgy than 30 years ago.
>
> The 240D had about 220k on the clock when i put new nozzles in when i
> rebuilt the engine. Those nozzles were tested and were bad. Kinda low
> miles if the odometer was accurate. My guess is that the car had more
> miles, but who knows? It may have racked up 150 k running short hops in
> Dallas and never left town. On the diesel injector, only the nozzle is
> replaced, and it is shimmed to pressure spec. The nozzle holder can stay,
> as it has no bearing on the performance of the nozzle. Rusty sells
> rebuilt
> injector assemblies, so you send in your old ones, holder and all. That
> is
> what I did on the 603. Unless one is nailing and does not clear, you
> probably don't need to worry until you hit 250-300k, then get them
> tested.
>
> At 01:35 PM 5/15/2006, you wrote:
>>How long do FI's last before they need to be cleaned?
>>
>>Sincerely,
>>Larry T ('74 911, '67 MGB, 91 300D Turbo)
>>A Blood Test for your oil - www.youroil.net
>>For Test Results http://members.rennlist.com/oil
>>Weber Carb Stuff http://members.rennlist.com/webercarbs
>>http://members.rennlist.com/my_911/Index.htm For my Paint Job Info
>>
>>
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>
>
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