Out of Ideas

Brothermoe · 07-28-2015, 10:56 AM

Hi

My scoot has been throwing a fit these past couple of weeks and I'm all out of ideas.

Problem 1:

Gas. No leaks anywhere in the system except for the gas cap. Thing is, the rubber seals on the gas cap are still in good shape and the cap seats properly on the filler but a gas stain always shows up from the filler hole running down the side of the tank. Could it be a gas vapor pressure issue?

Problem 2:

Bike starts up and idles fine but once the engine warms up, it dies.

Problem 3:

My CVT is chirping. My belt is the correct one for the scoot and new (3 months or so). This has never happened before even with the worn belt I replaced.

I'd appreciate any input. Thanks!

Weldangrind · 07-28-2015, 11:03 AM

Do you tend to fill the tank to the top?

Since the engine runs when cold but then stalls when warm, I suspect a clogged slow jet. The fuel enrichment circuit is automatic, so it will shut off after a few moments.

I'd pull the drive and the clutch apart for inspection.

katoranger · 07-28-2015, 04:10 PM

On number three check the condition of the rollers. They may have developed flat spots.

AZRider · 07-28-2015, 10:27 PM

Problems 1&2 could be related, if your gas cap vent is blocked. This would create pressure in the tank and fuel starvation once the carb is emptied. Can't help with the cvt.

humanbeing · 07-28-2015, 11:22 PM

Uncommon ???
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http://www.motorfans.com.cn/bbs/view...originator=yes

Brothermoe · 07-29-2015, 08:20 AM

Thanks for the input guys! I don't want to jinx anything but my friend suggested that I try changing the gas that I put in. I didn't put too much stock into it because gas is gas right? Anyway, I gave it a shot today and guess what? No more gas smell. Still not entirely convinced though. As for the chirping CVT belt, a scooter mechanic from a shop here suggested that I swap out the slide pieces of the drive pulley for new ones. I'll give that a try in a couple of days or so.

07-28-2015, 10:56 AM	#1
Brothermoe Join Date: Jul 2015 Posts: 4	Out of Ideas Hi My scoot has been throwing a fit these past couple of weeks and I'm all out of ideas. Problem 1: Gas. No leaks anywhere in the system except for the gas cap. Thing is, the rubber seals on the gas cap are still in good shape and the cap seats properly on the filler but a gas stain always shows up from the filler hole running down the side of the tank. Could it be a gas vapor pressure issue? Problem 2: Bike starts up and idles fine but once the engine warms up, it dies. Problem 3: My CVT is chirping. My belt is the correct one for the scoot and new (3 months or so). This has never happened before even with the worn belt I replaced. I'd appreciate any input. Thanks! Last edited by Brothermoe; 07-28-2015 at 11:56 PM.
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07-28-2015, 11:03 AM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Do you tend to fill the tank to the top? Since the engine runs when cold but then stalls when warm, I suspect a clogged slow jet. The fuel enrichment circuit is automatic, so it will shut off after a few moments. I'd pull the drive and the clutch apart for inspection. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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07-28-2015, 04:10 PM	#3
katoranger Join Date: May 2007 Location: Altamont, Kansas Posts: 15,103	On number three check the condition of the rollers. They may have developed flat spots. __________________ You meet the nicest people on a Honda Clone.
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07-28-2015, 10:27 PM	#4
AZRider Join Date: Jan 2015 Location: Phoenix, AZ Posts: 267	Problems 1&2 could be related, if your gas cap vent is blocked. This would create pressure in the tank and fuel starvation once the carb is emptied. Can't help with the cvt. __________________ George 2016 CanAm Spyder F3-L
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07-28-2015, 11:22 PM	#5
humanbeing Join Date: Mar 2008 Posts: 2,436	Uncommon ??? http://www.motorfans.com.cn/bbs/view...originator=yes http://www.motorfans.com.cn/bbs/view...originator=yes __________________
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07-29-2015, 08:20 AM	#6
Brothermoe Join Date: Jul 2015 Posts: 4	Thanks for the input guys! I don't want to jinx anything but my friend suggested that I try changing the gas that I put in. I didn't put too much stock into it because gas is gas right? Anyway, I gave it a shot today and guess what? No more gas smell. Still not entirely convinced though. As for the chirping CVT belt, a scooter mechanic from a shop here suggested that I swap out the slide pieces of the drive pulley for new ones. I'll give that a try in a couple of days or so.
	0