Warm stalling issue with GY6 (Hensim) 150

wvcruffler · 03-22-2009, 03:14 PM

Howdy all,
I have encountered my first little bump in the road with this ride. After 15-20 min of trouble-free riding, the ATV will now sputter then stall. To restart, you need to wait a minute or two, then it will start up (eventually) then run for a short period, perhaps 1/4 mi then stall again. It does not do this when cold. It feel like flooding rather than leanining out, but I am not completely certain. I removed the fuel filter and ran the fuel line over a frame piece and down into the carb so the fuel is not running up hill but still does the same thing. There is no fuel pump on this model. Any ideas I can try before I start wrenching?
Dr.Phil

phil · 03-22-2009, 04:42 PM

im not saying that its the problem once i had a 150 act the same way and it was the coil it even had fire and would spit and sputter after it got hot and tried to crank when it does this i would feed it a little gas wd40 or some starting aid to see if lacks fuel to check for a carb fuel problem

Cal25 · 03-22-2009, 05:32 PM

A coil will do that. So will a non-venting gas cap. Next time it stalls, listen carefully and loosen the cap abit then try to restart.

warrior91 · 03-23-2009, 12:12 AM

The auto fuel enricher or choke can stick and not close fully and would cause a rich "bog"

KentuckyDonkey · 03-23-2009, 01:22 PM

The above replies are all good possibilities- but my first guess would be that your impression of it flooding out is accurate. Sounds like a little dirt may be causing the float to stick, and thereby causing the motor to flood out.

Is there a fuel filter on your bike? (Mine Vbike didn't come with one, so I installed one myself).

If there is no fuel filter, the scenario I described is even more likely. I had the same thing happen with my tractor a while back- and it was driving me nutz! (and it has a fuel filter!).

I'd take the fuel bowl on the carb apart, and clean it...then it would work good for about an hour..and then the trouble would start again (and everyone was telling me it sounded like the coil, too!)- finally, I took my gas tank to get boiled out, and cleaned the bowl one last time...and that solved the tractor's problem.

On these small engines, even more so, just the tiniest piece of dirt can cause the float to just stick partially, and that will be enough to do it- and that's what it sounds like to me is happening.

rigidchop · 03-23-2009, 03:55 PM

also check the petcock. the screen can get clogged up and cause the same symptoms.

TheRealWorld · 03-27-2009, 11:54 PM

Make sure your vent is not plugged on your fuel tank. The easy way to test this is to run it with the fuel cap not tight.

kczukiman · 03-28-2009, 12:14 AM

Quote:

Originally Posted by TheRealWorld

Make sure your vent is not plugged on your fuel tank. The easy way to test this is to run it with the fuel cap not tight.

This is a very common problem with these chines units.

03-22-2009, 03:14 PM	#1
wvcruffler Join Date: Jul 2008 Location: West Virginia Posts: 19	Warm stalling issue with GY6 (Hensim) 150 Howdy all, I have encountered my first little bump in the road with this ride. After 15-20 min of trouble-free riding, the ATV will now sputter then stall. To restart, you need to wait a minute or two, then it will start up (eventually) then run for a short period, perhaps 1/4 mi then stall again. It does not do this when cold. It feel like flooding rather than leanining out, but I am not completely certain. I removed the fuel filter and ran the fuel line over a frame piece and down into the carb so the fuel is not running up hill but still does the same thing. There is no fuel pump on this model. Any ideas I can try before I start wrenching? Dr.Phil __________________ 2008 QLink Legacy 250 1982 Honda C70 Passport 2008 Hensim Hunter ATV 150cc
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03-22-2009, 04:42 PM	#2
phil Join Date: Jun 2008 Location: wise va Posts: 636	im not saying that its the problem once i had a 150 act the same way and it was the coil it even had fire and would spit and sputter after it got hot and tried to crank when it does this i would feed it a little gas wd40 or some starting aid to see if lacks fuel to check for a carb fuel problem __________________ halls auto l coolster, modcycles, yanmar & zongshen, dealer fired roketa,lifan and jet moto and apollo quit me who's next
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03-23-2009, 12:12 AM	#4
warrior91 Join Date: Nov 2007 Location: N.E. Saskatchewan, Canada Posts: 679	The auto fuel enricher or choke can stick and not close fully and would cause a rich "bog" __________________ '91 Yamaha Warrior- stage 2 '83 Honda ATC 70 '08 Yongjiang 125cc mx (Loncin) '08 Yongjiang 150cc atv (Jinlong)
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03-22-2009, 05:32 PM	#3
Cal25 Join Date: Feb 2008 Location: Terrell and Grapevine Tx. Posts: 1,585	A coil will do that. So will a non-venting gas cap. Next time it stalls, listen carefully and loosen the cap abit then try to restart.
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03-23-2009, 01:22 PM	#5
KentuckyDonkey Join Date: Feb 2009 Posts: 331	The above replies are all good possibilities- but my first guess would be that your impression of it flooding out is accurate. Sounds like a little dirt may be causing the float to stick, and thereby causing the motor to flood out. Is there a fuel filter on your bike? (Mine Vbike didn't come with one, so I installed one myself). If there is no fuel filter, the scenario I described is even more likely. I had the same thing happen with my tractor a while back- and it was driving me nutz! (and it has a fuel filter!). I'd take the fuel bowl on the carb apart, and clean it...then it would work good for about an hour..and then the trouble would start again (and everyone was telling me it sounded like the coil, too!)- finally, I took my gas tank to get boiled out, and cleaned the bowl one last time...and that solved the tractor's problem. On these small engines, even more so, just the tiniest piece of dirt can cause the float to just stick partially, and that will be enough to do it- and that's what it sounds like to me is happening.
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03-23-2009, 03:55 PM	#6
rigidchop Join Date: Dec 2007 Location: west virginia Posts: 53	also check the petcock. the screen can get clogged up and cause the same symptoms.
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03-27-2009, 11:54 PM	#7
TheRealWorld Join Date: Jun 2008 Posts: 817	Make sure your vent is not plugged on your fuel tank. The easy way to test this is to run it with the fuel cap not tight.
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