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Old 02-19-2016, 12:42 PM   #1
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How to sump fuel filter?

Hi All:

I did a search and came up dry.....

Any information on how to sump the MB fuel filter? And/or how to change it?

It's an easy 2 minute task in my pickup that I do every other fuel fill.

Cheap insurance against water in fuel.

But for the MB chassis, I couldn't find much....even on Youtube.

Thanks!
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Old 02-19-2016, 02:16 PM   #2
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Originally Posted by Byron in TX View Post
Hi All:

I did a search and came up dry.....

Any information on how to sump the MB fuel filter? And/or how to change it?

It's an easy 2 minute task in my pickup that I do every other fuel fill.

Cheap insurance against water in fuel.

But for the MB chassis, I couldn't find much....even on Youtube.

Thanks!
It will take about 1 1/2hrs. There are several things you need to have to do the job right. The filter itself has a water in fuel sensor. First you need your vin# because there are in production year changes, so you need get the right one. Also you need to change the turbo intake housing sleeve, since there have been instances of failure and sucking it into the turbine (not good). You may need to buy the clamp removal tool, I think they are called R clips. Search "Sprinter forum" for more information. Heres a start 2010 Fuel Filter Replacement - Sprinter-Forum
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Old 02-19-2016, 03:25 PM   #3
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Thanks, Still Kickin. Does anyone know if the turbo compensating ring issue has been resolved for the 2015's and beyond? Or is this something I should plan on replacing myself ASAP after delivery of the unit? Thanks.
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Old 02-19-2016, 03:29 PM   #4
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And it looks like 'sumping' or 'draining' the fuel filter isn't an option like it is in my Cummins truck. Instead you must replace the entire filter on the Benz.
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Old 02-19-2016, 04:01 PM   #5
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And it looks like 'sumping' or 'draining' the fuel filter isn't an option like it is in my Cummins truck. Instead you must replace the entire filter on the Benz.
Yes. However, since it has a sensor, you should receive a warning light prior to any critical levels of water accumulation prior to being introduced to the engine. That warning would trigger the need to replace the filter before the recommended duty cycle. As far as I know, there hasn't been a mention of water in fuel issue on this forum.

Have no idea if Benz changed the turbo sleeve design. Easiest way is to search that part, if it's made for your make and model, then it's the same.
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Old 02-19-2016, 08:01 PM   #6
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Hey kickin. I've had just that issue. I got a "water in fuel" light on the dash. There is advice in the manual as to how to evacuate some of the fluid from the fuel filter. I did this and the message went away for a while. Then returned about a month later (Aug 15) and wouldn't go away despite eliminating fluid as prescribed. In to MB and was told they need to drain the fuel tank and change the fuel filter. $800 CDN later the symbol in the dash was off and the rig was running fine. They said there was no way to get the water out of the tank other than dropping it and remove all the fuel. Personally, I wonder if just changing the fuel filter would have been enough.
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Old 02-20-2016, 06:27 AM   #7
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Hey kickin. I've had just that issue. I got a "water in fuel" light on the dash. There is advice in the manual as to how to evacuate some of the fluid from the fuel filter. I did this and the message went away for a while. Then returned about a month later (Aug 15) and wouldn't go away despite eliminating fluid as prescribed. In to MB and was told they need to drain the fuel tank and change the fuel filter. $800 CDN later the symbol in the dash was off and the rig was running fine. They said there was no way to get the water out of the tank other than dropping it and remove all the fuel. Personally, I wonder if just changing the fuel filter would have been enough.
Probably depends on how much water was in the fuel. Think I would have started with the filter. Filters run from $60.00 to $150.00 approx. Compensation ring about $25.00. The new 5 pin filters come with the sensor and heater incorporated.

I would think MB changed the filter along with cleaning the tank.
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Old 02-20-2016, 08:38 AM   #8
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Hey kickin. I've had just that issue. I got a "water in fuel" light on the dash. There is advice in the manual as to how to evacuate some of the fluid from the fuel filter. I did this and the message went away for a while. Then returned about a month later (Aug 15) and wouldn't go away despite eliminating fluid as prescribed. In to MB and was told they need to drain the fuel tank and change the fuel filter. $800 CDN later the symbol in the dash was off and the rig was running fine. They said there was no way to get the water out of the tank other than dropping it and remove all the fuel. Personally, I wonder if just changing the fuel filter would have been enough.
Interesting. Sounds like you picked up a bad load during a fill cycle. Anyway, it all depends on how much water is in the tank. Since you can't really know that, your stuck with purging the water through the bleeder circuit line off the filter itself. I would bleed it off into a clear container, let it settle and see how much water comes out of the filter.
Oh and by the way, understanding the plumbing at a fuel station, the draw off line is above the bottom of the storage tanks, to allow for the accumulation of water. So a good rule of thumb is to not fill from a station when the tanker is dropping its fuel load. That "stirs" the tank and thats when your most likely to get bad fuel. Just sayin'
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Old 02-20-2016, 10:23 AM   #9
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That's interesting SK. It makes sense when you think about it. And as far as MB was concerned they explained the same thing. I could "try" just changing the filter, but if that wasn't enough, they'd have to drain the tank and change the filter again! In addition I was headed to Colorado and Utah for a month the following week, and I had no appetite for repairs on the road with a dealer I wasn't familiar with. Star motors here in Ottawa is first rate, and I've had great care and support. Not cheap, but neither are our rigs. I'm not easily satisfied, and they have kept me happy, as has RV Canada. As a dealer I'm pleased with service. Timely and cost effective.
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Old 02-23-2016, 08:42 PM   #10
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Regarding water in the fuel, take a look at this thread in the Sprinter forum...

http://sprinter-source.com/forum/sho...ferrerid=36108

The author is a pretty respected Sprinter mechanic in Colorado. Some pretty terrible stuff, so maybe ignorance is bliss?!?

Moral seems to be that one should respect the Water in Fuel warning.



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