hmmmmmmmm yes ...........I know what you mean ...................I've got the yamaha on hold ready for my Europe trip

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

Just been out and after 57 miles you've guessed it ........it stopped again ...the only difference seems to be that now when it stops it doesn't need to be left before it'll start again and thinking about it on saturday when it stopped it restarted when i tried whilst on the phone to Maz..............If i restart and rev it fairly hard though after a minute o two it cuts out again ........don't appear to be losing 12v to ecu or 5v sensor power...........spare ecu made no difference .......couldn't get laptop to boot at the roadside .......hmmmm whats the common denominator there between windows and Buells
When it cuts out fuel pump instantly cycles again ?

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

Not sure if this has been asked already, but if you whip the plugs out when it konks out, are they dry or wet? That would tell you if it was fuel (and ignition - EMU or ECM input) or just ignition...

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08 Specialized Langster

If you cut the camshaft sensor signal, the engine just stalls. The fuel pump primes only if the ECM is re-powered or if a camshaft signal is received. So if the engine cuts out and the fuel pump starts running, then a power failure to the ECM could well be a reason.

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"It is often said that before you die your life passes before your eyes. It is in fact true. It's called living."
Terry Pratchett

Is the fuel tank venting correctly Fuel pipe kinked

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Spencer Racing... www.spencerracing.co.uk

ran last weekend with vent pipe off .....also opened cap when it stopped and no sound of a vacuum being released and engine still didn't restart with cap open.


Keep them coming folks as somebody will hit the nail on the head at some point either that or I'll just set fire to the bastard thing

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

Baffle moving about in the exhaust causing the old potato trick effect

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Spencer Racing... www.spencerracing.co.uk

The last one I saw with a similar problem decided to replace the harness after we tried for hours to fix it ...

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"It is often said that before you die your life passes before your eyes. It is in fact true. It's called living."
Terry Pratchett

I'll have it.....got plenty of time on my hands to sort it will need someone to test ride it though

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FUBAR pilot

You only need two bikes in life-an S1 and a Multistrada!

Or the nut that holds the handlebars !

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FUBAR pilot

You only need two bikes in life-an S1 and a Multistrada!

is the fuse box OK ?
maybe loose fuse holder, or connection on it ?

give the loom a good dose of looking at, every where it may rub too

fekin electrickery

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Feros Ferio

Fuse box looks ok and everytime i've checked for power ....it all checks out OK.....I even put a new ignition fuse in just incase it was faulty and working like a bimetal switch. When it cut out today i had my multimeter in the ecm power connectr and didn't detect any sign of loss of the 12 v .....or the 5v sensor output.
Checked the TPS feedback at the ecm and did pick up a strange signal on one occasion but think that was more me not getting onto the pin correctly rather than a bad pot ........checked pot with ecmspy again when i got home and seems to give a linear signal.
CPS signal while running was only showing just over 2volts on the multimeter but assume that it's probably due to it being an on off signal whilst running so never gets chance to show 5v.
What should fuel pump output from ecm be?.............when i power on it is 12v but while engine was running looked to only be about 2 volts as well? does it self regulate depending on demand ?

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2001 X1 2009 1125CR 2006 Uly X3 2010 Uly a fully Maz'd S1 and a 1991 RS1200 Westwind.

What do the plugs look like when it konks out?

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08 Specialized Langster