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May 22, 2013, 11:58am

ScootDawg Scooter Forum :: The Garage :: 2 Stroke Scooters :: Cold-natured Vino

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Topic: Cold-natured Vino (Read 468 times)

jprestonian
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Cold-natured Vino
« Thread Started on Dec 10, 2008, 4:17am »

I have a 49cc 2T Vino that HAS to run a few miles to get warmed up. It seems that even letting it idle for 10-15 minutes does not prevent it from bogging down in acceleration from a dead stop, especially under load (uphill).

Is this something that can be resolved?
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« Last Edit: Dec 10, 2008, 4:18am by jprestonian »

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90GTVert
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Re: Cold-natured Vino
« Reply #1 on Dec 11, 2008, 7:33am »

If it runs well once it warms up, I'm not too sure what you can really do. If it doesn't run well when warm you may need to do a little tuning.

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jprestonian
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Re: Cold-natured Vino
« Reply #2 on Dec 11, 2008, 4:42pm »

Yeah, it runs great after it's run a few miles, and always runs great in warm weather. I just wondered if it might be a carb issue or something that others had experienced.
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Karl
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Re: Cold-natured Vino
« Reply #3 on Dec 22, 2008, 10:16am »

You could try adjusting your air screw, but I've found that Yamahas in general (dirt bikes especially) are warm natured and don't run well when not fully warmed up. Still, try adjusting your air screw.

Karl

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scosgt
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Re: Cold-natured Vino
« Reply #4 on Jan 1, 2009, 12:14am »

I have a 2T that needs to be run slowly for maybe 1/2 mile before it smooths out.
It also does not like to be warmed up on the stand. It will inevitbly stall out. I warm it up maybe 30 or 40 seconds, jump on, drive up to 20 MPH for a few minutes, then all is well.
I think it is the nature of the beast.
BTW, the auto choke works great, when I first crank it up in cold weather it starts IMMEDIATELY, runs at VERY fast idle, then quickly drops down to a lower idle that it will stall from if left unattended.
After warm up, on a re-start I pull about 1/2 throttle and hit the button and it starts right up.
Not sure if there is anything I can or even want to change.

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jprestonian
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Re: Cold-natured Vino
« Reply #5 on Jan 1, 2009, 12:28am »

Thanks for the input, dawgs.

It's not critical... if I rode it around the block for a few minutes, that'd get it up to normal, anyway. I just need to not be in a hurry when I roll on the Vino on a cold morning. That's what the People 250 is for! ;)
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jprestonian
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Re: Cold-natured Vino
« Reply #6 on Jan 1, 2009, 10:26pm »

Well, the moderators are getting a bit too fascist for me, so thanks for all the fish. I'll be reading, but not contributing here, from here on out.

Best wishes to you dawgs.
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ireland2004
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Re: Cold-natured Vino
« Reply #7 on Jan 6, 2009, 1:42am »

Just to through in some advise about two strokes, you don't really want to let a two stroke idle on the stand for a long time. It can lead to fouling the plug. For better burn at start-up, you can try stepping up to a slightly hotter plug. Only go up one step at a time, and do plug reads to ensure that you aren't burning to hot, and you may see a slight improvement for no extra money than a new plug. I'm speaking from personal experience on this one. My E-ton Beamer, which is using a similar engine set-up as the Vino (both are Minareli's) is cold-natured at start-up, and requires fiddling with the choke, and giving some revs to the engine to wake it up a bit. I stepped up to a hotter plug about two years ago (I ended up going two steps hotter) and my Beamer now starts much easier in cold weather, as well as getting a better burn overall. Your scoot may react differently, but it may be worth a try.

The real cure, lol: my 2006 Vino Classic 50 loves the cold, thanks to the new engine setup that Yamaha introduced just after the 2004 model year, which is a liquid cooled four-stroke with auto choke. All it needs now is EFI, and it would be ready for the arctic. I still would love to get my hands on a older Vino though, maybe someone here would part with theirs... Hint, hint! Love the People 250 BTW, jprestonian!

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