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Old 09-26-2009, 05:20 AM   #1 (permalink)
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Diesel Fuel Filter

Does anyone know if there is a sticky for replacing the two fuel filters on their diesel engines? I want to get this done today. I have looked and didnt see anything. I am a new member, so, dont really know my way around here yet. If no sticky's, is there any tips on replacing the fuel filter?

Thanks
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Old 09-26-2009, 06:05 AM   #2 (permalink)
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There is no diesel specific forum here but sites like peachparts have some dedicated diesel owners. They have tremendous amount of experience and here are three threads with tips. The two major tips are the little O ring (item 29 in the pic below) for the pre-filter (small one) and fill the spin-on filter with fuel (it will drastically decrease cranking time to almost like a normal start). I do not own your car but have owned (very similar spin-on filter) MB diesel before. The fill the filter tip will save your battery and starter. Push the accelerator pedal while cranking helps even more.

W210 E300 fuel filters - how many? - PeachParts Mercedes ShopForum

Which way does the fuel filter spin on? - PeachParts Mercedes ShopForum

‘99 E300TD…Removing Spin-on Fuel filter - PeachParts Mercedes ShopForum

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Old 09-26-2009, 06:35 AM   #3 (permalink)
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loub,
Thanks for the tip. Ofcourse, I just dove right in and replaced the two filters, and yes, now it wont start. I didnt ad any fuel to the filter. I dont have any on hand. I'll try a couple more cranks, and press the gas pedal this time. Thanks a bunch for the tips.
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Old 09-26-2009, 06:39 AM   #4 (permalink)
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It will eventually start but it takes more cranks than if you would fill the filter. Do not crank continuously as it might overheat the starter. Just crank for about 5 - 10 seconds at a time and let the starter cool a bit and then repeat.
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Old 09-26-2009, 07:23 AM   #5 (permalink)
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I filled the filter with the diesel fuel that was in the old filter. When I took the new filter off, there was no fuel in it. Also, I noticed, havnt see anyone talk about this, however. The 3/4" bolt that holds the fuel filter in place, is hollow. It has a hole on both sides of the bolt. I took pictures. Apparently, this hole is supposed to line up with the fuel line that comes in to the filter, but there are no marks on that bolt that would help you line it up when you are tightening it back down. After I filled the filter up with fuel, I put the filter back on, tightend up the bolt. I made a mark on the bolt to line it up. But, still no start. Im charging my battery a bit and will go try again to start her up.
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Old 09-26-2009, 07:55 AM   #6 (permalink)
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Quote:
Originally Posted by carl6405 View Post
I filled the filter with the diesel fuel that was in the old filter. .
So you shoveled all dirt from old filter straight into the new one? Some of it on the "clean" side?
Never fill the filter on diesel. Even if you burn starter doing extra cranking it is still cheaper than replacing 6 injectors.
What helps a lot in priming the system is pushing the car nose down. I have steep driveway and doing job in the garage I push the car on the driveway for priming the fuel.
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Old 09-26-2009, 08:18 AM   #7 (permalink)
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Yep. I didnt have any diesel fuel on hand. Also, I dont have a hill on my lot. What came out of the old filter, looked clean. I just tried a few more times to crank it. Im giving the starter and battery a rest. I have my battery charger on the battery. It almost started, on my last attempt. Hopefully next try it will.
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Old 09-26-2009, 08:23 AM   #8 (permalink)
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What also helps is having the tank full. If you have second car, take some cans and top it off.
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Old 09-26-2009, 09:01 AM   #9 (permalink)
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It started for a moment, then shut off. I see air in the fuel lines. Do you know how to purge the air out of the lines? Im sure this is the issue.
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Old 09-26-2009, 09:17 AM   #10 (permalink)
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The air will purge itself.

Did you put an o-ring on the new prefilter?
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