Hi guys,
I face a problem with my xtx...
When it is cold it starts OK with no problems..
But when it is hot, if I stop the engine and I try to start again the bike doKOn't start as cold... it takes about 5 or 6 seconds continuing pressing start button...
Any ideas???
Sorry for my English..

Could be a lot of things, but start with the easy things to check.

Is your air filter clean? Is the intake restricted in anyway? A dirty or clogged filter will cause warm starting issues.

Does it smell of fuel when it won't start hot? Take the spark plug out and have a look for a 'wet' appearance straight after a failed attempt at starting. How good/new is your spark plug?

When did it start doing this? Can you think of anything you changed, modified or did differently at the time?

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After checking what Pleiades tell you, check your ignition coil.

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XT660X 07.
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Akrapovic 2in2, DNA Stage 1 and 2, Kev's O2 eliminator, fuel mod

Thank you guys for your respond...
Here are what I have made until now...
Fuel pump checked
Injector checked
Ignition coil and spark plug checked
Tps checked
battery checked
Valve clearance checked
Air filter checked

My xtx was bought used so i "bought" the problem too... There was no changes by me...
Thnx

After a long time of personal search... I finally solved out the problem... It was rediculus and no one can believe it..

So what was the problem? .....

Got the same problem. When cold it starts as it should be. Sometimes starting warm it tales a couple of seconds.

It was the start switch...
I cleaned the switch with a contact cleaner and i solve my problem