Skyteam V Raptor 125

dandanfireman · 05-07-2023, 05:00 AM

Hi all I've recently bought a 125 v raptor (Vanvan replica) it had a pitbike carb and the egr system has been removed and blanked off.

She starts and idles great on and off choke. Goes slowly through the rev range great but bogs immediately if you yank hard on the throttle. Also runs very rich.

So far I've rebuilt the carb and all jets are clean, the float line is parallel to the casing. The needle is adjustable so I've dropped it down to its lowest level to lean it out but still getting a black sooty plug.

Electrics are good. NGK cap, HT lead screws on central.

flopsweat · 05-08-2023, 11:14 AM

Welcome! Is this THE DanDanTheFireman? Could my two moto worlds be colliding? Sadly I'm probably not much help on the issue, if I had to guess with my limited knowledge I would say a main jet is running too rich and maybe could be swapped, since that covers the last quarter of the throttle up to wide open.

Correct me if I'm wrong, that's more of my raising my hand in class with my best answer.

dandanfireman · 05-09-2023, 06:45 AM

Hi that's for replying. So far it bogs immediately from closed throttle but goes fine slowly through the rev range. Spark plug is fouled black as soot.

flopsweat · 05-11-2023, 12:07 PM

The pilot jet handles the first 25% of throttle, so if you've adjusted the needle to make it leaner (which is more of the mid-range of throttle), maybe try swapping that out with a different size.

And again if anyone else can contribute to clarify, I'm going off my limited knowledge of the one time I did carb adjustments.

This video is by far the best I've seen, and explains exactly which jet does what. A bit long but might lend some insight.

Megadan · 05-11-2023, 03:56 PM

What carburetor is it (type and size) and what jets are in it currently?

05-07-2023, 05:00 AM	#1
dandanfireman Join Date: May 2023 Posts: 2	Skyteam V Raptor 125 Hi all I've recently bought a 125 v raptor (Vanvan replica) it had a pitbike carb and the egr system has been removed and blanked off. She starts and idles great on and off choke. Goes slowly through the rev range great but bogs immediately if you yank hard on the throttle. Also runs very rich. So far I've rebuilt the carb and all jets are clean, the float line is parallel to the casing. The needle is adjustable so I've dropped it down to its lowest level to lean it out but still getting a black sooty plug. Electrics are good. NGK cap, HT lead screws on central.
	0

05-09-2023, 06:45 AM	#3
dandanfireman Join Date: May 2023 Posts: 2	Throttle first quarter Hi that's for replying. So far it bogs immediately from closed throttle but goes fine slowly through the rev range. Spark plug is fouled black as soot.
	0

05-11-2023, 03:56 PM	#5
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,110	What carburetor is it (type and size) and what jets are in it currently? __________________ Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124
	0

05-08-2023, 11:14 AM	#2
flopsweat Join Date: Oct 2021 Location: The burbs of Chicago Posts: 251	Welcome! Is this THE DanDanTheFireman? Could my two moto worlds be colliding? Sadly I'm probably not much help on the issue, if I had to guess with my limited knowledge I would say a main jet is running too rich and maybe could be swapped, since that covers the last quarter of the throttle up to wide open. Correct me if I'm wrong, that's more of my raising my hand in class with my best answer.
	0

05-11-2023, 12:07 PM	#4
flopsweat Join Date: Oct 2021 Location: The burbs of Chicago Posts: 251	The pilot jet handles the first 25% of throttle, so if you've adjusted the needle to make it leaner (which is more of the mid-range of throttle), maybe try swapping that out with a different size. And again if anyone else can contribute to clarify, I'm going off my limited knowledge of the one time I did carb adjustments. This video is by far the best I've seen, and explains exactly which jet does what. A bit long but might lend some insight.
	0