Inline Fuel Filter
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04 E55
Inline Fuel Filter
Was looking at a couple of the old threads on the fuel filter. Was there a particular inline fuel filter people used? I was going to use a e39 m5 fuel filter and try and see if that worked.
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2004 E55,1969 300SEL6.3,2011 ML350 BlueTec Diesel,2005 ML400 CDI
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E63
While this might be a good idea in theory, what I would be concerned about is the flow rate of the e39 filter. Our fuel system runs on very high pressures. Unless you can find out what the peak fuel pressure the E39 has at 7000rpm, I would be hesitant in using that filter.
That being said, most aftermarket fuel filters tend to be junk anyway and will most likely collapse under full load so choose carefully
That being said, most aftermarket fuel filters tend to be junk anyway and will most likely collapse under full load so choose carefully
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04 E55
Couldn't of said it better myself, I checked the fuel pressure for the e39 and it tops out around 4.9bar. I found out that the old e55 was 4 Bar, not sure what the w211 is. Would it be safe to assume a high pressure filter would work well with a lower pressure system?
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E55
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E63
Pre filtration is useless, cannot be done. The filter is in the tank, no way to pre-filter without creating a choke point.
The OP is talking about removing the stock filter all together and replacing it with one inline outside the fuel tank. That way, you could in theory replace the filter every 5 to 10k miles in as little as half hour or less for less than $100. And in theory the stock sending unit could last as long as the car itself
The OP is talking about removing the stock filter all together and replacing it with one inline outside the fuel tank. That way, you could in theory replace the filter every 5 to 10k miles in as little as half hour or less for less than $100. And in theory the stock sending unit could last as long as the car itself
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E63
Yes high pressure filter should be OK to work at a lower pressure.
Most who have done the inline filtration use a regular inline filter from Summit and Jegs etc from what I've seen.
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E63
One more thing, just cos it's starts so high up does not mean it will continue to rise. There is a lot of fuel being dumped in a 5.4l large displacement engine (think American cars) which has a positive displacement blower that makes instant boost. It will bleed pressure from the injectors. Fuel pumps will maintain but will it rise much? Hope some more knowledgeable folks can post their experiences
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04 E55
The stock w211 E55 idles at ~4.7 bar. That right there eliminates the E39 filter. Will be OK at part throttle, might not fare so well under wot. Then again I do not know what other cars that filter has been used on. If you were to say for example that it is also used on the TT550i, then you will be good with that. For oem type inline filters, I would look at Toyota first imo.
Yes high pressure filter should be OK to work at a lower pressure.
Most who have done the inline filtration use a regular inline filter from Summit and Jegs etc from what I've seen.
Yes high pressure filter should be OK to work at a lower pressure.
Most who have done the inline filtration use a regular inline filter from Summit and Jegs etc from what I've seen.
You may be on to something. I see the 550i tops out at 5.7bar. May be a candidate for use. I'll find out and see if toyota has any high pressure fuel systems in their cars.
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From: Eastern WV / Central MD
'05 E55, ‘00 ML55, ‘92 500E
I just got my recall tank installed and wonder about an inline filter.. They say there was a new filter in the new tank but do our E55's have an inline filter along the frame under the car? I'm new to the car and would like to know..
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04 E55
You are good to go, since they replaced the tank, they probably replaced the sender as well. The sender contains the fuel filter. You have to replace the whole thing to replace the filter. This is the reason I am looking for inline filters. I think the s600 fuel filter may be a decent candidate as well.
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05 E55 AMG, E320 CDI, Turbo E46 M3,IS300 2JZGTE,VQ35 Turbo Maxima, Mercedes 300D
I am wondering what the issue is that people are trying to solve. Are you concerned that the in pump filter is not providing enough filtering? If you just add a filter after the in pump filter, it is not going to help that much if at all, unless you are putting it right before the rail and concerned about buildup in the lines ... not sure on the background to the issue here.
Also high pressure does not always fully translate to high flow. If the filter is too small, pressure will be high inside the filter, flow will be low so be careful. Flow rate for the filter is also important.
Also high pressure does not always fully translate to high flow. If the filter is too small, pressure will be high inside the filter, flow will be low so be careful. Flow rate for the filter is also important.
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04 E55
I am wondering what the issue is that people are trying to solve. Are you concerned that the in pump filter is not providing enough filtering? If you just add a filter after the in pump filter, it is not going to help that much if at all, unless you are putting it right before the rail and concerned about buildup in the lines ... not sure on the background to the issue here.
Also high pressure does not always fully translate to high flow. If the filter is too small, pressure will be high inside the filter, flow will be low so be careful. Flow rate for the filter is also important.
Also high pressure does not always fully translate to high flow. If the filter is too small, pressure will be high inside the filter, flow will be low so be careful. Flow rate for the filter is also important.
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E63
Pre filtration is useless, cannot be done. The filter is in the tank, no way to pre-filter without creating a choke point.
The OP is talking about removing the stock filter all together and replacing it with one inline outside the fuel tank. That way, you could in theory replace the filter every 5 to 10k miles in as little as half hour or less for less than $100. And in theory the stock sending unit could last as long as the car itself
The OP is talking about removing the stock filter all together and replacing it with one inline outside the fuel tank. That way, you could in theory replace the filter every 5 to 10k miles in as little as half hour or less for less than $100. And in theory the stock sending unit could last as long as the car itself
I am wondering what the issue is that people are trying to solve. Are you concerned that the in pump filter is not providing enough filtering? If you just add a filter after the in pump filter, it is not going to help that much if at all, unless you are putting it right before the rail and concerned about buildup in the lines ... not sure on the background to the issue here.
Also high pressure does not always fully translate to high flow. If the filter is too small, pressure will be high inside the filter, flow will be low so be careful. Flow rate for the filter is also important.
Also high pressure does not always fully translate to high flow. If the filter is too small, pressure will be high inside the filter, flow will be low so be careful. Flow rate for the filter is also important.
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E63
Unless you have a return system, your car has no filtration at all
Last edited by kponti; Aug 17, 2015 at 10:23 PM.
