My MT-03 engine shuts down while driving and won't start again.

Hi.
This is the 3rd time in 1 year and a half that I have take the bike to yamaha. In the 2 previews times they changed the spark plug and didn't say anthing else. I have had this problem almost since I bought the bike. 
The changes made to the bike:
1. I have chenged air filter with a K n' N filter.
2. They reprogramed the engine so that it would not shut down to eu 3 emission regulations from eu 2
3. I have installed xenon light. 
4. Increased min rmp to 1500 from 1100-1200 that it was before.


Also it seems that I have this problem more during winter moist days and also about 500 km after I get the bike back from the regular 5000km scheduled.
The bike has 20600 km atm and I bought it with 0km. Hi. This is the 3rd time in 1 year and a half that I have take the bike to yamaha. In the 2 previews times they changed the spark plug and didn't say anthing else. I have had this problem almost since I bought the bike.  The changes made to the bike: 1. I have chenged air filter with a K n' N filter. 2. They reprogramed the engine so that it would not shut down to eu 3 emission regulations from eu 2 3. I have installed xenon light.  4. Increased min rmp to 1500 from 1100-1200 that it was before.
Also it seems that I have this problem more during winter moist days and also about 500 km after I get the bike back from the regular 5000km scheduled. The bike has 20600 km atm and I bought it with 0km.

Hello there.
Thank you for the swift response :D
now to your question:
1. Yes the yamaha certified mechanic did that for me, but it was more of a guess than a fix. ie "lets change that and see if you still have problems"
2. about 8 lt/100 I think in the city. I do about 180-190 km with my 15lt tank
3. stall and the engine stops. Then it won't start again. Some times it would start after 10 tries. I think that the problem increased when I increased the min rmp to 1500.
4. Its in yamaha service again :/
5. Yes I have 2 years warranty and now the bike is a year and a half. Hello there. Thank you for the swift response :D now to your question: 1. Yes the yamaha certified mechanic did that for me, but it was more of a guess than a fix. ie "lets change that and see if you still have problems" 2. about 8 lt/100 I think in the city. I do about 180-190 km with my 15lt tank 3. stall and the engine stops. Then it won't start again. Some times it would start after 10 tries. I think that the problem increased when I increased the min rmp to 1500. 4. Its in yamaha service again :/ 5. Yes I have 2 years warranty and now the bike is a year and a half.

Hi. 

The engine shuts down either while underway most of  the time but it will shut down 30 sec to 1 min afterwards. 


I try to start it with an without throttle (most of the times without)


Yes I can smell fuel.


I have just recently changed the plug. The one other time that I was told it was a plug problem they did not charge for the plug but they did not clarify if they changed it or not (mechanic was not there that the time). 


As far as the type is concerned I don;t know if its iridium but I guess the standard plug would be iridium.


Have a look at this recall notice (apparently its only for 06 models mine's 07).  recall notice

Hello and thanks for taking the time to read through :D
Now to your questions:

"stall and the engine stops. Then
it won't start again." even before the K & N were installed?
or only after the change of air filter;



I
had them before but the engine would always start again. After the
filter this is the 3rd time in a year that it won't start again.



"reprogramed the engine",
before the K & N change? or after;



They
happened at the same time. When I serviced my bike for 10000 km.



any popping sound(s) at the exhaust (not
necessarily backfire) when decelerating or engine breaking? Or when twisting up the throttle and suddenly releasing;



I
had them since day one. I think the exhausts are supposed to be like that



are there any other electronic devices
installed such as GPS, wireless phones, 2way radios;



I
have an alarm installed that does not work for about a year now but when I
switch the flash on I hear a beeping sound along with the flash :D

condensation in the air
intake (most likely);



electrical/ignition including the
immobilizer (likely);



actually
turning the key to ON has become a chalenge since it is getting
increasingly difficult to turn the ignition key...



RFI/electrical interference (least
likely).

Its at the service center again.
same problem. Its at the service center again. same problem.

I have an 06 mt-03, after nearly 3 years of relatively hassle free motorcycling i have a problem starting my bike, i turn the ignition on, the ECU does its startup thing and the neutral light is on. I push the start button and the engine management light comes on like its supposed to with the starter motor turning only the engine does not fire and the engine management light flashes.
I have taken it back to a yamaha dealer and they replaced the fuel injection cutout switch ( the one that stops the fuel pump if the bike falls over) asking me if i had dropped the bike recently. The bike had only once been on its side when it rolled off its side stand when I first got it, this being over 2 years ago. A week later the engine cuts out again in a scary way (travelling along a busy road at high speed around a corner, not cranked over to silly angles of lean which this bike can do easily) and trying to start it gives same flashing light as before. 1 week is a little poor for an electrical component to last, could it be faulty wiring in loom

absolutely no performance mods fitted, only a sccottoiler fitted from purchase. I have an 06 mt-03, after nearly 3 years of relatively hassle free motorcycling i have a problem starting my bike, i turn the ignition on, the ECU does its startup thing and the neutral light is on. I push the start button and the engine management light comes on like its supposed to with the starter motor turning only the engine does not fire and the engine management light flashes.
I have taken it back to a yamaha dealer and they replaced the fuel injection cutout switch ( the one that stops the fuel pump if the bike falls over) asking me if i had dropped the bike recently. The bike had only once been on its side when it rolled off its side stand when I first got it, this being over 2 years ago. A week later the engine cuts out again in a scary way (travelling along a busy road at high speed around a corner, not cranked over to silly angles of lean which this bike can do easily) and trying to start it gives same flashing light as before. 1 week is a little poor for an electrical component to last, could it be faulty wiring in loom

absolutely no performance mods fitted, only a sccottoiler fitted from purchase.

Had same thing which was fixed for free under yamaha warranty.



Get your throttle position sensor changed.



this is a common problem and easy to fix, Its just on the side of the throttle body.



good Luck ! Had same thing which was fixed for free under yamaha warranty.

Get your throttle position sensor changed.

this is a common problem and easy to fix, Its just on the side of the throttle body.

good Luck !

Hi and welcome to FixYa,

With the indulgence of robotek, a couple of additional clarifying questions for zisis_p:

"stall and the engine stops. Then it won't start again." even before the K & N were installed? or only after the change of air filter;


"reprogramed the engine", before the K & N change? or after;


any popping sound(s) at the exhaust (not necessarily backfire) when decelerating or engine breaking? Or when twisting up the throttle and suddenly releasing;



are there any other electronic devices installed such as GPS, wireless phones, 2way radios;

condensation in the air intake (most likely);


electrical/ignition including the immobilizer (likely);


RFI/electrical interference (least likely).

When it stops, does it die whilst underway, or stall from a start. Do you use any throttle when you are trying to start it? Do you smell fuel when you are trying to start.


 Fuel economy maybe a bit thirsty/rich. This could perhaps result in carbon fouling of the plug... maybe. If you have done 20,000 k,how many plugs have you put into it, and are they iridiums, When it stops, does it die whilst underway, or stall from a start. Do you use any throttle when you are trying to start it? Do you smell fuel when you are trying to start.
 Fuel economy maybe a bit thirsty/rich. This could perhaps result in carbon fouling of the plug... maybe. If you have done 20,000 k,how many plugs have you put into it, and are they iridiums,