Hi Guys, not been on for some time,Stock Cars taking up alot of time, although do go on site to keep up with whats going on. Just a quick question, is a fuel filter change, a quick, easy change on 1.9 tdi Roomster ?    

yep

 

5-10 minutes,

 

2 springy clips round the inlet and outlet pipes, a pull out clip on the other bit, filter out, filter in reconnect pipes then start her up and keeps the revs until it gets the air out the system (only 15-30 seconds normally)

 

job done

yep

 

5-10 minutes,

 

2 springy clips round the inlet and outlet pipes, a pull out clip on the other bit, filter out, filter in reconnect pipes then start her up and keeps the revs until it gets the air out the system (only 15-30 seconds normally)

 

job done

 

 

Thank you very much for info Bluecar1. 

bluecar1 - I've always filled the new filter with diesel before plugging it on, are you saying that is not really necessary.

I've never filled one before

 

there is normally enough diesel in the system to get the engine running then keep the revs up until the engine settles, no need to rev the nuts of it, just enough to key it running until the air is purged from the system

 

if the engine dies before the air is purged turn it over in bursts of 5-10 seconds with a similar break so you don't overheat the starter

 

pre filling the filter will help as less air to purge from the system, but can be fun and messy

Easiest way to pre-fill the fuel filter is to fit it and connect to fuel tank, then connect vacuum pump (same that is used for oil changes) to its outlet and drag fuel from the fuel tank. Did that on all my cars, though Roomster hasn't had fuel filter change yet.

 

Running diesel engine fuel dry really does wear the HP components in no time at all, and is best avoided. From my experience, neither 1.9IP nor 2.5IP could run long enough on leftover fuel to drag the fresh fuel from the tank. I haven't checked if the 1.6CR has a pickup fuel pump in the tank, if yes, then it's possible it fills up the fuel filter quite fast.

how do you stop it draining back into tank when you disconnect the vacuum?

 

the wear issue is why I said don't rev it just keep it running

At least on a diesel it does not drain much if at all as there is way too much resistance from the fuel filter material. As soon as I can see fuel in the vacuum pump line, I disconnect it and connect engine fuel feed back in place.

 

Even if you do not rev the engine, on a diesel all components are lubricated by fuel (some also by oil on newer diesels), running them slower when dry still rapidly increases wear.

I think I'll just stick with my little funnel that I fill the filter with away from the car. It is simple enough to do, the hardest bit is remembering to get some diesel in a fuel can. The left over I just put into the tank afterwards.

Yes, you could do it on 1.9, but it is no longer possible on the 1.6CR, funnel was made obsolete

The T-valve is now after the filter,the filter itself has only inlet/outlet just like petrol ones.

so are the CR high pressure fuel pumps that much more fragile than the old PD units

 

the old lucas CAV / bosch rotary pumps were pretty much indestructible