2003 metropolitan runs rich / low top speed

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2003 metropolitan runs rich / low top speed

Postby rush1111 on Mon Aug 06, 2018 9:13 pm

My 2003 metro starts great, smells like I'm running rich , and barely gets to 30 mph, at wot. Where do I begin ?
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Re: 2003 metropolitan runs rich / low top speed

Postby GizmoGal on Mon Aug 06, 2018 9:57 pm

Change the spark plug. Remove and clean the carburetor thoroughly and reinstall, put in fresh fuel and add some fuel stabilizer.

If you happen to own a 2003 Met II, it is restricted and it will not go above 30 mph unless you take the steps to derestrict it. Plenty of instructions for that elsewhere on this board, back some years. Use Search.

The older models of Mets (thru model year 2005) came as Met I, unrestricted, (top speed about 38 mph) and the much slower Met II, as noted above. Until you are sure you have an unrestricted Met I, efforts to go faster may be futile. But if it is a Met I, then suggestions as to plug, clean carburetor and fresh fuel can benefit.

You don’t say how many miles you have on the bike. It’s possible it needs the belt tightened or replaced and new rollers, too.

You can work on all this if you’re good at diy, or you’ll need a good shop. First check if you own a Met I or Met II.
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Re: 2003 metropolitan runs rich / low top speed

Postby rush1111 on Tue Aug 07, 2018 5:11 pm

It's a met I , and the odometer reads 1038.7 , so it could be 11k miles if it rolled over. The bike starts and idles very smoothly, just has a poor top end. I will try to clean the carb, and check the plug. Thanks for your input and any other advise you may have
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Re: 2003 metropolitan runs rich / low top speed

Postby GizmoGal on Tue Aug 07, 2018 6:13 pm

Poor top end suggests loose belt and flat rollers. With a bike that’s as old as it is, I’d easily believe it’s got 11K miles. All the more reason to suspect flat spots and a loose or dirty belt, more than anything else, since you say it starts and runs well without stalling. Needs an overhaul for speed and you can find the parts on Bike Bandit or similar.
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