The importance of clean fuel and good filtration - especially in commonrail diesels!

**Rolly** · 12th March 2016, 02:35 PM

This may be a silly Q, Anyhoo......here goes;

I've read that air bubble/voids in the fuel system are not a good thing.
I've a Puma 110 and want to regularly drain some fuel from fuel filter to check for water.
Do I need to have engine running to drawer off fuel(eliminate air bubble from fuel removed) or is this OK without engine running?

cheers

Rolly

**PAT303** · 12th March 2016, 09:41 PM

If you open the drain with the engine running you'll suck air into the system. Pat

**AndyG** · 13th March 2016, 06:07 AM

Let me classify me mechanical skills as cack handed,. And just as I don't expect a particular tradesman able to do my job, I can't do theirs

Bought a diesel care secondary filter, for a my15 Defender, 2 micron, water separator, hand primer pump, the bees knees I think.
But,
From what I've read the Puma comes with special ford hose clamps, which are a right bastard, without the right tool, which is????
Plus there is a risk of adding contaminants to the fuel during said exercise. But maybe I would be more diligent on my own car. Catch 22 to an extent.

I have also read about ultra fine oil filters, or are they for heavy machinery?

DiscoMick · 29th March 2016, 05:47 PM

Hey Andy have you changed the second filter near the fuel tank inside the driver's side rear wheel? Peace of mind.

Sent from my GT-P5210 using AULRO mobile app

**AndyG** · 29th March 2016, 05:52 PM

No, it's only 15,000 km but it's due next service, 2 years, I think

**Tins** · 31st March 2016, 04:49 PM

Slightly O/T, but I recommend finding the highest volume fuel outlet you can. The high flow truck stop places are best. E.g, in Sydney, the BP outlet at Kemp's Creek
turns over 50,000 litres a day. It's a small place but it is VERY cheap so the trucks love it.
No chance the fuel will become contaminated with algaes, and if the trucks are using it there's a good chance it has a good rep for cleanliness.
Don't use the car pumps at the same outlet, they are usually fed fro their own tank.

BTW, the Kemp's Creek example is just that; an example.

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