02-12-2020, 12:10 PM | #1 |
Join Date: Feb 2020
Posts: 2
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Nextstar 250cc ATV
Hello All,
My son and I acquired a couple of Chinese ATV projects. One of which is a NextStar. Anybody heard of this atv? We are having trouble with getting it running smoothly. It appears that we have narrowed it down to a unit that appears to be some sort of vacuum system. I would almost think it is a vacuum fuel pump, but one of the 3 lines goes to a port into the cylinder. Here is a pic. Any help would be great. |
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02-12-2020, 12:11 PM | #2 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Welcome! I need some context; please take a step back and snap another pic.
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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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02-12-2020, 12:21 PM | #3 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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Also, please show us the port in the cylinder. I suspect what you're seeing is an air injection device, which pumps air into the exhaust stream for a catalytic converter. If that's the case, you might find a noticeable bulge in the exhaust header, just downstream from the cylinder head.
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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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02-12-2020, 12:50 PM | #4 |
Join Date: Feb 2020
Posts: 2
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Thank you for taking a minute for me. It is much appreciated. Here are some additional pictures I took. There are 2 larger hoses (and again I am not even sure these hoses are going to the righ places). One hose goes to the cylinder and the other to the crank case. Then there is a small hose that goes to the intake manifold. Here are the photos (sorry they are so large).
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02-13-2020, 11:34 AM | #5 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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That's the very device I was describing, and most of us delete it. Does your exhaust pipe have a bulge in it, right near the heat shield nuts?
__________________
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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