Tank Troubles
 

Well, Jed Atack came around today to swap the coloured bits between his Monster and mine. Reason is my bike is black, his is yellow, he wanted a black one and I wanted a yellow one.
Anyway both are early 2004 M620ie's, except his (yellow) tank is metal, mine (black) is plastic. So we went through the rigmarole of swapping the tanks over, moving the relays on the side of the battery tray etc, and even had the sense to swap filler caps!
The fuel pumps stayed with their original tanks, and we got all the pipes to fit on OK. The end result was Jed's newly black bike runs fine, but my newly yellow one won't fire. It turns over fine but won't fire up. Boo.
I can't really see anything wrong. When you first turn the ignition on, the injection warning light stays on just a little bit longer than the rest, but the user manual suggests that this is normal.
The Haynes manual seems to suggest that plastic tank had the fuel pressure regulator as part of the fuel pump assembly, whereas metal tank doesn't, so I may now be running without a pressure regulator. Not sure whether this is the cause of the problem though.

Anybody got any ideas?

And yes there is petrol in the tank.

And yes we could try swapping them back....another weekend.

For a minute then I thought someone was racing a Challenger 2 :o

Kill switch?

I'll get my coat.

Murray

does the fuel pump prime when you turn the ignition on

It makes that noise whirring noise, which I always thought was it priming. Does it for few sec, then stops.

I'll go and look in my haynes manual for you

nothing particular - but they do highlight how easy it is to get the feed and return pipes the wrong way round

[Edited on 26-2-2006 by phil_h]

if you have connected the pipework the right way round, I am puzzled.

It is quite easy to get them wrong.

One is a feed to the pump, and the other a return from the pressure regulator - if you get them the wrong way round, it wont run as there is no pressure to the injectors - only to the wrong side of the pressure regulator.

Pressure regulator is on the throttle body, so not that I think.

Alan

silly but has it got a fuel shut off for removing the tank my 620 sport has and I did leave it off and stand scratching me head for a wile.

:)

We tried the pipes both ways round, and it made no difference.
There's no fuel shut off that we came across.
When it was turning over, if I twisted the throttle it did changespeed and tone a bit but still didn't catch. Does that mean that its got fuel and spark, or is some other effect coming into play?

Moto Rapido said that there should be no problems from the change over as long as the pipes are the right way round, It is however very easy to trap or bend one of the pipes with the tank, other than that there only suggestion that a fuse has gone so to check for a spark and at the same time you should be able see if the fuel is getting trough. Hope it works if not I will come up and we can try swapping agene