Fuel pump pre filter & fuse?

[caduceus]

I had the baffles welded back on in my fuel and recently, and need to clean out the tank.
I've tried swishing some about and tipping it out but its not that great a method IMO. So I'm going to set up a small fuel circuit to circulate the fuel and filter it.

My questions are - When wiring the live and neg from the battery to the pump, I assume I need to put an inline fuse between the + and the pump, but which size fuse do I need?

Also, I am going to buy a the cheapest fuel filter for whatever car and put it between the fuel tank outlet and the pump, to protect the pump. Should I put a large size one like the OE one for our cars? Or will one of those inline fuel filters do?

Any quick tips and answers greatly appreciated.

Cad

[OleVix]

Good questions, I always wondered why the fuel filter is after the pump

[Belle427]

Id just replicate the fuse thats in the car, not sure what size it is.
A see through filter would be better for obvious reasons, you can buy the old fashioned plasic ones cheap enough.

Edited by Belle427 on Sunday 4th December 11:22

[Steve_D]

I understand the method but you will still need to swish it all about to ensure you have it all removed.
Using a pump is not going to give much in the way of flow as the pump is designed to produce pressure rather than flow. Then when do you stop as you have no way of knowing if swarf is still moving through your system

My method would be to use a garden hose, swish it all about with the outlet over a nice clean bucket. Keep flushing until the bucket is full then inspect it carefully for particles. If you find any then do another bucket full. Repeat until you have found nothing in 2 successive buckets.
Leave to drain then flush some fuel through it. Any small amount of water left will be no more than you would get in normal use through condensation.

Steve

[caduceus]

Thanks for the replies chaps.
It was my intention to stand there rocking the tank whist said setup was in operation, to free up any particles. But I'm actually thinking the garden hose is a good idea, and one I completely overlooked and went straight to the petrol setup.

I think I'll use water at first as Steve has suggested. That way I can swoosh to my hearts content I just want to protect my shiny new pump from any crud that may be there still.

Although I may still run the standalone fuel pump setup just to prime/clear the tank, if you get my drift.

Anyone know what size fuse the Bosch needs? Will 10 amp in an inline holder do?

Cheers

[Steve_D]

If you start the process without the bucket you can swish with gay abandon with the tank upside down and on its ends to really get the stuff moving then when you think anything in there will now be in the bottom of the tank start the bucket routine.

Steve

[blitzracing]

The filter has to be a low resistance type on the input- basically a wire gauze and nothing more. They are not the same as the filters on the pump output side that has 30 PSI pushing fuel through it.

something like this:

http://www.ebay.co.uk/itm/UNIVERSAL-CHROME-INLINE-...

If the tanks steel, just chuck a couple of magnets it it to hold any metal swarf or rust.