My XTX 05 has never let me down (over 2.5 years of ownership) till now..... Starts fine but shortly after cuts out. Starts again after a few goes and 5mins down the road cuts out again. Starts again after another few goes.... and then runs fine all day. The next day (or after 8 hours at work) the same thing. It seems to happen only when the bike is cold. I've taken it in to Yamaha and it sat there over night and I assume it dried out. They can't find a problem. Could it just be that it was so damp and cold over the past few weeks that it didn't get a chance to dry out. I keep it outside under a cover all the time so it isn't garaged???? :0(

Any warning lights or error codes ?

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OFFICIAL CRASH TEST DUMMY

It could be one of the many electrical connections that are under the left side of the tank. The connection blocks are crap and let all the water from the road into them and arent sealed properly so after a while the wires and cables just corrode.

Have a look in there as my main cut out switch cable totally corroded through and the rest of the block connections where pretty bad.

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Plough on

If no one's interfered with the fuelling this doesn't go crazy by itself from one minute to the next. So let's not panick, first port of call is to inspect / clean / change the spark plug, as it can have residues in there due to long inactivity.

After this, since Badga has both DNA filters stage 1 & 2 I would give them a good ol' cleaning and spray them with the reactivating polymer oil spray.

lastly I would check and spray the tickover screw to ensure its not worked itself loose and that its not got salt debris preventing it to operate smoothly.

The fuelling fix would be the last thing I would try. It's an elelctronic setup achieved in the diag mode and it doesn't forget its setting unless like I said someone had "fiddled" with it.

no... none at all...

no tank not full either.. :0(

thanks to all for your help... will let you know how I get on...

Could be anything but have a look at the coil, ht lead and plug cap where they join up, should be a watertight seal, it only takes a bit of moisture in there to stop it.

When the none starting fault happens you need to check the Tilt & Side stand switch's readings while it is happening. No use checking the sensors readings when the bike is starting OK.

The read measuring blocks can be read from the dash, check them against the workshop manual, we have had similar faults with 2 other tilt sensors before. I would also read the coolant & air temp senders while I am there.

Otherwise pull the fuel tank off & unplug the tilt sensor & check for corrosion.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
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My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

what is a HT lead? Im having similar problems here. Going to check all possible connections tomorrow morning but I was just wondering.