Thread: Dirty Diesel? / Best Second Filter for Puma Defender?

i prefer clean diesel

030769731d3ad99eab342598e9906f57--diamond-eyes-vin-diesel.jpg

I recently bought a new fuel filter/water trap for my boat and the complete kit including filter, housing and fittings cost a bit over a hundred bucks But it doesn't come with its own primer.
Add an in line primer eg squeeze bulb type or a 12v fuel pump and this filter will suit any diesel or petrol engine as a primary filter/water trap.
I have used these on boats, tractors and headers and they have worked perfectly and are far cheaper than an OEM filter setup to replace.

Originally Posted by martnH

? But


I have checked and the secondary fuel filter is on the supply line...

Both supply and return go near the fuel cooler...

Some interesting reading from the workshop manual. The genuine filter head has a thermostat in it. When the returning fuel is below 45 degrees, the thermostat diverts it back into the filter and back to the high pressure pump. Stops the fuel system waxing up in freezing conditions.
If the return fuel is above 45 degrees, it sends it back to the tank.

The secondary fuel filter (fuel manager) is a 2 micro unit. With a extended water trap beneath

I was thinking of diy. But then the fuel line are made of polymer, it is preformed and seems quite brittle. and replacement is expensive...
Overall I am not capable to DIY the filter......

The secondary fuel filter doesn't use the fuel lines on the fuel cooler. It's on the supply fuel line. It has nothing to do with the fuel cooler.
It was my mistake to say it uses the fuel cooler line. It only use the supply line. Both supply and return fuel lines go near the cooler..... And there is quick connect fittings on both lines.
Cheers

Originally Posted by Beery

Some interesting reading from the workshop manual. The genuine filter head has a thermostat in it. When the returning fuel is below 45 degrees, the thermostat diverts it back into the filter and back to the high pressure pump. Stops the fuel system waxing up in freezing conditions.
If the return fuel is above 45 degrees, it sends it back to the tank.

Originally Posted by martnH

The secondary fuel filter doesn't use the fuel lines on the fuel cooler. It's on the supply fuel line. It has nothing to do with the fuel cooler.
It was my mistake to say it uses the fuel cooler line. It only use the supply line. Both supply and return fuel lines go near the cooler..... And there is quick connect fittings on both lines.
Cheers

I was talking about the primary filter. Explaining why the supply and return lines both go via the primary filter head.

Originally Posted by Robmacca

I assume this is mounted on the chassis but where in relation to the Fuel Cooler? Any Chance of some more Pics where I can get a better idea as to where & how it is mounted?

Also, what is the Flow rate of these Aux Filters? W/O a good flow rate, your not doing any favours to your fuel system.....

rob

I think the filters are all on the low pressure side. Plus there is a lift pump in the tanks so shouldn't have any starvation problem?

I don't know.haha but so far so good.

Hi All,
I’m curious whether a 5 micron filter really warranted over a 10 micron? If so, why run two filters, why not just replace the 10 with 5 micron and carry a spare?
Cheers
Adrian