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In tank Fuel filter problems

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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Topic: In tank Fuel filter problems
    Posted: 11 Oct 2014 at 23:31
If you have one of these in your tank -
 
Replace it with an all metal one, the half plastic type was never intended to be used immersed in petrol, and it either swells up, or splits at the seam, which will cause immediate engine failure, even if you are in the fast lane of a motorway. The all metal one is Mahle KL145, or UFI 31 760 00.
 
You will also have to replace the special clips (you need a special tool to refit them), so I used this type of fuel hose clip, better than the worm drive type.


Edited by Brian UK - 11 Oct 2014 at 23:37
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 12 Oct 2014 at 23:24
That half-plastic one looks like it's swelled due to the pressure.
  
That's obviously the input side, going by the direction arrow, so the filter element exacerbates the pressure problem on that side as well, by having resistance to flow. Whoever the hell designed that should be hung up by the scrotes. Big smile
 
 
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Android Quote  Post ReplyReply Direct Link To This Post Posted: 14 Oct 2014 at 08:16
Just out of interest ...how many miles had you done on the fuel filter before it destructed ??
Edited ....just spotted your post on MG uk .....can you see the filter from the fuel filler ?

Edited by Android - 14 Oct 2014 at 13:20
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2014 at 11:51
My filter did not destruct, I replaced it because I know many others have. Unless you have one of those little cameras on a bendy wire, you can't see the filter in situ.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gonzo Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2014 at 16:42
If it does self destruct you are stranded. Much better to get a new filter and hose clips and swap them. Of course this does mean removing the tank and that can open a whole can of worms.................
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 21 Oct 2014 at 19:17
Yes, I call it preventative maintenance.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Android Quote  Post ReplyReply Direct Link To This Post Posted: 22 Nov 2014 at 15:36

Good day Fellow Guzzisti

I followed Brian's advice and checked my fuel filter.....uh oh Mhale KL150 

Not wanting to remove tank or fuel pump un necessarily I got a cheap boroscope for £9 off ebay from Hong Kong and checked the filter from the filler....result!!

Need to get myself some malleable wire now to be able to see the other side but new filter on its way.






Edited by Android - 22 Nov 2014 at 15:39
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2014 at 11:52
Like many components the plastic part does not like the ethanol, while you are at it checkout the fuel pipes too I have had to replace fuel pipes on all the bikes in the last 3-4 yrs when previously that had lasted 10+ years quick check squeeze fuel line between finger and thumb if it feels soft or spongy ...replace it
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 23 Nov 2014 at 14:00
Actually in this case it's not Ethanol, it's because the filter was intended to work with diesel, not petrol. Well that's what the nice man from Mahle told me. But he did send me a couple of replacement KL145 filters as compensation.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve In Ireland Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2014 at 17:38
Just because you have the metal filter does not mean you are immune to problems.  The pipe between the filter and the pump was the problem on my 1100 Griso - popped off the pump on the M6.  Since replaced the short clear pipe with something properly submersible in petrol.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote red leader one Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2014 at 18:20
Have all bikes got a filter/pump in the tank.

I know nothing about mechanics.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2014 at 18:41
not all no chech in the manual for your bike  not got one? download free greg benders "this old tractor" website
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov 2014 at 22:30
There is a filter and pump in all fuel injected models, and this has all been inside the tank for the last 10 or so years.
 
The Griso does seem to have problems with the fuel pipe releasing itself from the pump or filter, so do the Cali models with the in tank system. Must be something to do with the pipe layout. On the Cali's they brought out a new pipe which had a corrugated appearance.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve In Ireland Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2014 at 09:49
Originally posted by Brian UK Brian UK wrote:

There is a filter and pump in all fuel injected models, and this has all been inside the tank for the last 10 or so years.
 
The Griso does seem to have problems with the fuel pipe releasing itself from the pump or filter, so do the Cali models with the in tank system. Must be something to do with the pipe layout. On the Cali's they brought out a new pipe which had a corrugated appearance.

On the Griso it seems that the short pipe between the pump and filter is not designed to be submerged in petrol all the time and swells, causing it to come off the pump.  There was a recall on this, but even the replacement pipe was not a lot better  I replaced mine with some properly specified submersible fuel hose and decent hose clamps have not had a problem since.  Sounds like they may have used better stuff on the later Californias.  
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2014 at 14:29
The V11 Le mans some have internal mine has external pump and filter exactly the same as fitted to many cars ...some CAlis also have the external pump /filter arrangement, I Know my Bro's EV does as HE told me which filter to go get Guzzi £70+ car one £20 ....stupid
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