Anyone experienced water in diesel?

**wrinklearthur** · 11th September 2011, 10:02 PM

Hi All

Tackling the fuel problem before you fill the vehicles tank, is the only way to avoid the majority of fuel contamination problems.
By installing a filter / separator in the delivery line between the storage tank and the vehicle, as most farmers do, stops most of the contaminates before they enter the vehicles tank.

This will not help if the vehicle has little use over a long time span, as condensation does occurs when a fuel tank is left near empty and water can then accumulate.
With the water caused by condensation, rust and / or algae will grow, developing another set of problems, being the blockage of the filters, fuel lines and possibly rendering any sensors inoperable.

Another way water can get into a tank besides condensation, is when a warm tank that has low fuel level, is suddenly cooled, during a heavy fall of rain or by crossing a water course. With water flowing around the tank, the air contracts causing a partial vacuum, drawing water in through any open, joints, cracks or breathers.

Has it rained in the outback lately?

Is there any type of device that can successfully be placed into the fuel inlet on a vehicle, so that when filling with a nozzle, is capable of separating out any contaminates?

Cheers Arthur

**Greatsouthernland** · 8th June 2014, 09:02 AM

Bump...

Did this get brought up since the above discussion? Seems like a good suggestion...

**AndyG** · 8th June 2014, 09:42 AM

In another post the mr funnel product was mentioned, but to me it looked awkward esp into a defender recessed filler.

I ask my rep at LRA about pre filters (cav) and got the official line of no mods. I then got a phone call (he is ex LR mechanic) and told me the best place on the chassis rail to mount it, in front of the existing gear.

If damaged by water, no warranty, so what is their to lose?

**rar110** · 8th June 2014, 09:49 AM

Does the D3/D4/RRS have a sedimenter to separate water and large particles?

**AndyG** · 8th June 2014, 10:01 AM

I see Racor also have a filter funnel. Prob a good idea if you think the fuel is dodgy, but would you use it every time. Their water seep raptor filters have a 2, 10, 30 micron versions, am thinking 10 micron.

**rar110** · 8th June 2014, 11:18 AM

Originally Posted by AndyG

I see Racor also have a filter funnel. Prob a good idea if you think the fuel is dodgy, but would you use it every time. Their water seep raptor filters have a 2, 10, 30 micron versions, am thinking 10 micron.

I substituted the standard Lucas separator with a racor filter/separator on the 110. As a primary filter it worked too well using 2 & 10 micron filters, as they both blocked causing a breakdown. The particles where rust from the fuel tank and oil residue from a jerry can. The Lucas unit does a good job picking up larger particles. I've put the Lucas unit back on, but will run the Racor 10 micron filter after the Lucas unit.

**AndyG** · 8th June 2014, 11:59 AM

I saw one product CAV ? With two filter housings in one assembly, I wonder if that is to run two different micron elements?

Davehoos · 8th June 2014, 01:16 PM

I wonder if that is to run two different micron elements

They can be 2 in parallel or series.

often the in series housing have a small drilling to allow fuel to bypass the first housing.

few different housings. one housing the centers are joined,-the first filter fuel comes in the outer clogs it up the water collects and is passed on to the center of the second housing that has a water drain or sedimenter.

we have a fiat here with a CAV filter and sedimentor under the housing and a screw on filter on top with a bleed scew-both filters are in parallel.

**phl** · 9th June 2014, 07:27 AM

I have a roof mounted Boab 55L spare fuel tank which is gravity fed via a hose to the filler. What's a good in-line filter for that purpose? Will the CAV filter work or is there something more compact?

**isuzurover** · 9th June 2014, 03:03 PM

Commonrail diesels have much higher specifications for fuel filtration and also much higher fuel flow (recirculation) than do old-tech diesels.

That said, most filters do not meet the specs when tested in real-world conditions.

Most of the old-tech (e.g. CAV type) filters and sedimenters are either not large enough or not fine enough for commonrail engines. However that said - if they are sized correctly they can work well as a pre-filter to protect the $$$ main filter.

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