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Discussion Starter #1
my bike has just started doing this in the last couple of months

new spark plug
new fuel strainer
checked valves
all hoses are tight
new tps mainly because i set it a .64 and at wot its at 3.6 which i figured its supposed to be closer to 4.1 at wot. but after getting the new one it didnt change.

im pretty much down to procom, fuel pump and injector
 

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It could also be the ignition coil.

If your still running the oem coil get a dynatek coil
 

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Ok.

That pretty much narrows it down to the three you have listed.

A new fuel pump is cheap.

After that I’d swap back on the stock ecu to see if it Breaks up
 

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Discussion Starter #5
Nice thing is I just picked up my buddy's quad he pretty much has all the same mods so I'll just be swapping parts one by one until it's gone
 

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Me sucede lo mismo. El sensor TPS y el sensor de temperatura funcionan en valores normales, la bomba de nafta tiene presión. No se cual puede ser la causa.
 

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Me sucede lo mismo. El sensor TPS y el sensor de temperatura funcionan en valores normales, la bomba de nafta tiene presión. No se cual puede ser la causa.
Google translated

That happens to me too. The TPS sensor and the temperature sensor work at normal values, the gasoline pump has pressure. I don't know what the cause may be.
 

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Creo que puede ser que la rueda del cebador este demasiado cerrada. He modificado eso y ha mejorado.
Google translate

I think it may be that the primer wheel is too closed. I have modified that and it has improved.

__________________


¡Asegúrese de que el cable del acelerador esté flojo para evitar que el TPS rebote fuera del rango en el arranque, causando un código de error DFI, bloqueando su avance de sincronización y causará sus síntomas ...!


Translated
Make sure your throttle cable has slack to prevent the TPS from bouncing out of range at start-up causing an DFI error code, locking your timing advance & will cause your symptoms...!
 

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Discussion Starter #10
well after swaping out a known good procom, injector and fuel pump i still have this issue
 

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well after swaping out a known good procom, injector and fuel pump i still have this issue
Check your valve lash/clearance
Intake 0.10~0.15mm .....best performance (0.14mm is recommended)
Exhaust 0.17~0.23mm... best performance (0.22mm is recommended)

Check/test your water temp sensor...
 

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Discussion Starter #12
They are fine, i replaced the water sensor and air sensor. valves have been inspected
 

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Awesome! Glad you found it!
 
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