Diesel primary fuel filter - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 09-05-2010, 02:02 AM Thread Starter
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Diesel primary fuel filter

Hi

I have a 2009 E280 CDI W211, Where is the Diesel Primary Fuel Filter and how do I change it?

Many thx
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post #2 of 8 (permalink) Old 09-05-2010, 10:10 AM
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Underneath the engine top cover.

Change it according to WIS instructions.

Kent Christensen
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post #3 of 8 (permalink) Old 09-05-2010, 02:00 PM
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Underneath the engine top cover.

Change it according to WIS instructions.
I think you have slightly missed the point here... folks that ask questions here generally do not have a WIS..

Anyway sam, for a 642 engine:

1. pop the plastic engine cover
2. remove the engine air intake duct - downstream of the air filter
3. note the fuel filter, left of center near the front, with circular top.
4. disconnect the 2 fuel lines
5. loosen retaining bolt
6. remove filter assembly.
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post #4 of 8 (permalink) Old 09-05-2010, 02:55 PM Thread Starter
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don't I need to prime the system after that since the air will get in?
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post #5 of 8 (permalink) Old 09-06-2010, 02:19 AM
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My WIS does not say that, but as it is intended for use by trained mechanics, maybe that is assumed.

I have no diesel engine experience. When is priming normally required?
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post #6 of 8 (permalink) Old 09-06-2010, 04:27 AM
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Originally Posted by keyhole View Post
My WIS does not say that, but as it is intended for use by trained mechanics, maybe that is assumed.

I have no diesel engine experience. When is priming normally required?
Most often it should be enough to fill up the filter can and then just crank the engine.
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post #7 of 8 (permalink) Old 09-07-2010, 08:54 AM
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I think you have slightly missed the point here... folks that ask questions here generally do not have a WIS..
... the alternative of getting incorrect information--as yours is--is not acceptable.

You've omitted dealing with CLIC clamps and that's important.

The REAL point is, if you want to do DIY you still have to have the tools and the most important tool is access to factory procedures. It's simply foolish (and often dangerous) to do anything else.

Kent Christensen
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post #8 of 8 (permalink) Old 09-08-2010, 08:59 AM
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... the alternative of getting incorrect information--as yours is--is not acceptable

You've omitted dealing with CLIC clamps and that's important.
You sound a bit peevish here... There's nothing incorrect in my post. Where clamps are required to remove a fuel filter (when under the car) the WIS will refer to them. Here it does not.

Do you really think that fuel will flow upwards from the tank and gush out of these lines? Apart from what is inside the lines there should be very little loss of fuel when the lines are pulled off.

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The REAL point is, if you want to do DIY you still have to have the tools and the most important tool is access to factory procedures. It's simply foolish (and often dangerous) to do anything else.
The guy asked where the filter was, and how to change it. I told him. No special tools are required here. He didn't ask about the pitfalls, torques, etc. If it gets complicated, I post the entire WIS page that contains such information.

This is just a forum where we try to help out fellow MB owners...
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