Sinnis hoodlum 2021 broken acceleration

[Hoodlum]

Hi, my bike has recently started to lose power when I accelerate. I twist the throttle and it is either sluggish to get to full speed or it actually slows down and loses power.

I have checked the spark plug and air filter so far both of which look absolutely fine.

Any suggestions?

Cheers
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Rab Donnelly

[Easy-X]

Does it do it straight from cold or only after riding for 5 mins?
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Nobby the Bastard]

They called it a hoodlum?
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[WD Forte]

I looked it up and it's a Chinese made single cylinder SOHC 4 stroke bike with EFI cos Euro and it uses the Delphi system

The first thing I'd want to do is read fault codes
as it may have a faulty sensor and reverted to play safe conditions.

Guesses
Poor temp sensor readings may cause poor fuelling
ditto IAT
A faulty tps may not be sending good signals to the ECU
and so on
hence RTF-FCs!
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bikers smell of wee

[Hoodlum]

[Easy-X]

My guess is inadequate fuel supply. Possibilities: faulty fuel pump or injector (i.e. a physical problem) or, as the esteemed WD Forte suggests, a sensor problem.
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[WD Forte]

Could be the pump/fuel filter or injector couldnt it?
whipping out the injector and turning it over and observing the
spray/dribble may give a clue.
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bikers smell of wee

[Hoodlum]

[A100man]

Have a look at some prevsious threads on Chinko 125s, as I recall fault codes appear via a number flashes on teh engine management light
when ignition is turned on.

Since you're communicating is a cogent manner I think you will get good answers for the 'local' 125 experts. WD et al
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[WD Forte]

I've never played with a Delphi ECU system
but aware of its use on many china bikes
but this thread may help you

https://www.chinariders.net/showthread.php?t=15675

Dont assume the ECU is some know all supercomputer !
it aint
They don't monitor everything and can give misleading messages
but they ( error codes) are a good start point when looking for clues to a problem on an EFI bike

An ECU wont/cant tell you if an injector isnt spraying properly or blocked
and on your bike it probably doesn't monitor fuel pressure either
so whip it out and see for yourself if you suspect it.
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bikers smell of wee