Guys I need some help here - MVAgusta.net
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post #1 of 12 (permalink) Old 06-21-2010, 05:23 PM Thread Starter
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Guys I need some help here

People,

As reported in a previous post I believe I may have a faulty fuel pump or wiring to it.

Earlier this evening I managed to lift the tank and remove the connector to the pump.

It would be very greatly appreciated if someone could advise on the DC resistance of a standard pump when out of circuit. This can be measured at the pump connector using pins 1 and 2.

If anyone could help that would be greatly appreciated.

Can anyone advise on where I may be able to source the pump itself.

This thread leads me to believe they are available on eBay as they are identical to Ducati pumps:-

http://mvsource.net/forum/showthread.php?t=18945

Cheers





paul

When my Dad and I first laid our eyes on an MV Agusta at the UK launch, we were simply blown away.................
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post #2 of 12 (permalink) Old 06-21-2010, 05:26 PM
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Unplug the pump and try to start the bike, if it blows a freash fuse, then its not the pump but the wiring to the pump. If it doesnt blow a fuse, then its the pump.

The easiest way to check for a short on the pump is to see if there is continuity between the pump +/- leads.

Joe - mv2envy
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post #3 of 12 (permalink) Old 06-21-2010, 05:37 PM
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sorry mate with out removing all mine i can't tell you

i had the fuel pump on mine go it ran like shit almost on 3 cylinders
also ruined the fuel pressure regulator
and knackered plugs well not sure but they was replaced in case
i can measeure the dc from the old pump but not sure whats exactly fucked will post tomorrow if this helps
i was told it was best to replace the whole assmbly which i got for £200 from stp motorsport here in the uk

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post #4 of 12 (permalink) Old 06-21-2010, 06:42 PM
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I have a few pumps here. Which pins are you calling pins one and two?
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post #5 of 12 (permalink) Old 06-21-2010, 08:22 PM
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Carl;
they are numbered on the plug......but the colors on #1 change???

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post #6 of 12 (permalink) Old 06-21-2010, 08:38 PM
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Submariner;
you keep starting new threads on the same problem....kind of makes it hard on us that are trying to help you

first you have to find the short.....remove the pump plate from the tank....you are playing with gasoline vapors and a short!!!!!!

as i said before... disconnect the 4 wire connector and turn the key on with the correct fuse in place, push the start button....
then if no fuse blows.....its more than likely in the tank wiring or the pump

i'd inspect the wires then put 12 volts to the pump wires (1&2)...either the pump runs or it arcs.....pull the plug on the pump and give it 12 too

its a Bosch pump.....if its bad, find a number on it and Google it

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post #7 of 12 (permalink) Old 06-22-2010, 01:53 AM Thread Starter
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Guys thanks for all your help especially those from Knurl who has helped me alot to date.

I have tested the wiring up to the pump connector and am satisfied that it is not a short between the fuse and the the pump connector. When I split the pump connector and measured the resistance of the motor, which are the pins with thicker wires then the resistance was 0.1 ohm which to me indicates a short in the pump connector (pump side), wiring or a knackered pump. This would draw around 120A and blow the fuse instantly.

I have read bad things about first timers removing the tank so I want to try to do everything I can before removing the pump from the tank.

STP motorsport are a great bunch they want around £200 for a pump whereas a pucker MV one is £470 incl VAT, alternatively I ma give time machine bikes a go.

The MV manual suggests Knurls idea of a 12v connection straight onto the pump, I may in fact try this tonight.

When my Dad and I first laid our eyes on an MV Agusta at the UK launch, we were simply blown away.................
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post #8 of 12 (permalink) Old 06-22-2010, 05:31 AM
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Quote:
Originally Posted by theknurl View Post
Carl;
they are numbered on the plug......but the colors on #1 change???

Noel-theknurl
For an old guy you can see pretty well. I looked for numbers but my tired old eyes couldn't find them.
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post #9 of 12 (permalink) Old 06-22-2010, 05:41 AM
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Removing the pump is not that difficult. I just did it and it a matter of removing three screws.
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post #10 of 12 (permalink) Old 06-22-2010, 06:44 AM Thread Starter
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It transpires that if the part is a failed pump (which I am going to be checking at the weekend) then it is available from MV Agusta for £470.

The part number is a Bosch Part No. 0580453408 and is available from Merlin Motorsport or my local MV dealer Forza Italia for around £70

http://www.merlinmotorsport.co.uk/p1...duct_info.html

Oh dear oh dear.

When my Dad and I first laid our eyes on an MV Agusta at the UK launch, we were simply blown away.................
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