Lifan X-Pect Issues

kowenboy · 06-06-2020, 01:24 PM

So I recently acquired a Lifan Xpect. It’s been a great bike, put about 750 miles on it and have had a blast (most of the miles have been me riding on the street now that I got a permit.) Got it for a good deal too. I got the bike at a shop, they even did multiple checkups and tunes, and claimed to adjust the valves. Now onto the problem... the problem im facing is that the bike seems to sputter, or lose power occasionally as well as be very difficult to start. I tried contacting the dealer and they said that i need to adjust the fuel/air mixture on the fuel injection... i tried doing this and nothing helped. Seems like when i let the screw out, it start easier but sputter much more. The screw more in, it would barely start and stall extremely easily. The bike is also throwing on a check engine light. I suspect they didnt do the valves correctly or perhaps my fuel injector isn’t adjusted correctly. Any ideas?

bored stiff · 06-07-2020, 03:45 PM

I just bought one of these to, every problem with these always seems to be the valves. Start there, do it your self or have someone you trust do it. There is another guy not long ago same issues around the same miles , he didnt think it could be the vales but in the end it was. Lucky for you he made a thread of the whole expireance and how he corrected it. here is the link https://chinariders.raptorrefuge.com...d.php?p=334656 please be sure to let us know how it went . And stop fucking with that screw.

Wild Dog · 06-07-2020, 06:34 PM

What you should do is call them and tell them that THEY should fix the air/fuel ratio. Even more if they done a "check up" and "adjusted" the valves.
The motorcycle is new and it should be working fine without issues.

kowenboy · 06-09-2020, 05:10 PM

Quote:

Originally Posted by bored stiff

I just bought one of these to, every problem with these always seems to be the valves. Start there, do it your self or have someone you trust do it. There is another guy not long ago same issues around the same miles , he didnt think it could be the vales but in the end it was. Lucky for you he made a thread of the whole expireance and how he corrected it. here is the link https://chinariders.raptorrefuge.com...d.php?p=334656 please be sure to let us know how it went . And stop fucking with that screw.

I fixed the valves myself. They were tight as hell. Clearly the people who worked on my bike lied to me. Shout out to Sui-Cycle in Nampa Idaho, they gave me a good deal on the bike (2k, no tax, fully assembled plus helmet gloves and protaper bars) but they lied about my valves being done, couldnt even get a .03mm in the exhaust or intake.

kowenboy · 06-09-2020, 05:10 PM

Quote:

Originally Posted by Wild Dog

What you should do is call them and tell them that THEY should fix the air/fuel ratio. Even more if they done a "check up" and "adjusted" the valves.
The motorcycle is new and it should be working fine without issues.

Yeah I ended up fixing the bike myself. Those guys at Sui Cycle in Nampa Idaho lied about the valves being done.

bored stiff · 06-09-2020, 07:27 PM

Thats great ,good luck with it.

oincman · 06-12-2020, 07:09 AM

Mine never sputtered, but yup, the valves were about closed. Adjusted and it runs great now other than making a noise I've still yet to track down.

landshark · 06-12-2020, 07:32 AM

Did you ever check the tank like I suggested in another thread?

bored stiff · 06-13-2020, 10:37 AM

Landshark , I need to see this thead ,how can I find it

Megadan · 06-13-2020, 01:24 PM

It is entirely possible that they did set your valves to spec, which for the Xpect is .06mm. During the initial break in period you would be amazed at how quickly that .06mm gap will disappear in just a couple hundred miles as the valve and seat mate together and the stem experiences initial stretching. I set my valve gap purposefully wide during break in for that reason, and I still have to re-adjust them within the first 500 miles.

landshark · 06-15-2020, 07:39 AM

My xpect had this mysterious vibration/rattle that I could not track down. Finally figured out it was a tube in the gas tank that was vibrating against the tank wall. I took a long screwdriver and ever so slightly moved the tube away from the tank wall. No more noise for me. This may have been unique to my xpect, but I thought I would share just in case. Sure felt good to get rid of that noise.

Voodoo · 07-21-2021, 04:24 PM

If anyone can tell me which size fuel injector I need for my life and X pad do sport I would very much appreciate it. If I have tried to order it twice I've spent over $300 to try to get just a few injectors and have yet to receive it

buzz · 07-22-2021, 07:11 AM

Megadan this makes since,will be adjusting mine today. 700 mile and no problems ,just thinking it need to be set. Thanks

06-06-2020, 01:24 PM	#1
kowenboy Join Date: Jun 2020 Posts: 9	Lifan X-Pect Issues So I recently acquired a Lifan Xpect. It’s been a great bike, put about 750 miles on it and have had a blast (most of the miles have been me riding on the street now that I got a permit.) Got it for a good deal too. I got the bike at a shop, they even did multiple checkups and tunes, and claimed to adjust the valves. Now onto the problem... the problem im facing is that the bike seems to sputter, or lose power occasionally as well as be very difficult to start. I tried contacting the dealer and they said that i need to adjust the fuel/air mixture on the fuel injection... i tried doing this and nothing helped. Seems like when i let the screw out, it start easier but sputter much more. The screw more in, it would barely start and stall extremely easily. The bike is also throwing on a check engine light. I suspect they didnt do the valves correctly or perhaps my fuel injector isn’t adjusted correctly. Any ideas?
	0

06-07-2020, 03:45 PM	#2
bored stiff Join Date: Jan 2020 Location: New York Posts: 53	I just bought one of these to, every problem with these always seems to be the valves. Start there, do it your self or have someone you trust do it. There is another guy not long ago same issues around the same miles , he didnt think it could be the vales but in the end it was. Lucky for you he made a thread of the whole expireance and how he corrected it. here is the link https://chinariders.raptorrefuge.com...d.php?p=334656 please be sure to let us know how it went . And stop fucking with that screw. Last edited by bored stiff; 06-07-2020 at 04:41 PM.
	2

06-13-2020, 01:24 PM	#10
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,043	It is entirely possible that they did set your valves to spec, which for the Xpect is .06mm. During the initial break in period you would be amazed at how quickly that .06mm gap will disappear in just a couple hundred miles as the valve and seat mate together and the stem experiences initial stretching. I set my valve gap purposefully wide during break in for that reason, and I still have to re-adjust them within the first 500 miles. __________________ 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
	2

06-07-2020, 06:34 PM	#3
Wild Dog Join Date: Dec 2016 Location: Argentina Posts: 756	What you should do is call them and tell them that THEY should fix the air/fuel ratio. Even more if they done a "check up" and "adjusted" the valves. The motorcycle is new and it should be working fine without issues.
	0

06-09-2020, 07:27 PM	#6
bored stiff Join Date: Jan 2020 Location: New York Posts: 53	Thats great ,good luck with it.
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06-12-2020, 07:09 AM	#7
oincman Join Date: Nov 2019 Posts: 99	Mine never sputtered, but yup, the valves were about closed. Adjusted and it runs great now other than making a noise I've still yet to track down.
	0

06-12-2020, 07:32 AM	#8
landshark Join Date: Aug 2019 Posts: 53	Did you ever check the tank like I suggested in another thread?
	0

06-13-2020, 10:37 AM	#9
bored stiff Join Date: Jan 2020 Location: New York Posts: 53	Landshark , I need to see this thead ,how can I find it
	0

06-15-2020, 07:39 AM	#11
landshark Join Date: Aug 2019 Posts: 53	My xpect had this mysterious vibration/rattle that I could not track down. Finally figured out it was a tube in the gas tank that was vibrating against the tank wall. I took a long screwdriver and ever so slightly moved the tube away from the tank wall. No more noise for me. This may have been unique to my xpect, but I thought I would share just in case. Sure felt good to get rid of that noise.
	2

07-21-2021, 04:24 PM	#12
Voodoo Join Date: Jun 2021 Posts: 2	If anyone can tell me which size fuel injector I need for my life and X pad do sport I would very much appreciate it. If I have tried to order it twice I've spent over $300 to try to get just a few injectors and have yet to receive it
	0

07-22-2021, 07:11 AM	#13
buzz Join Date: Dec 2020 Location: Dayton Pa. Posts: 877	Megadan this makes since,will be adjusting mine today. 700 mile and no problems ,just thinking it need to be set. Thanks
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