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Old 10-26-2018, 11:55 AM   #1
joshuah459   joshuah459 is offline
 
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250cc won't idle

My roketa 250cc scooter won't idle. If you keep it above idle speed it seems to do fine. Any suggestions on where to start with this? It doesn't look like my car. Has a adjustment screw of any kind.. are there any vacuum diagrams around?



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Old 10-26-2018, 08:37 PM   #2
kz1000st   kz1000st is offline
 
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Check for a cracked intake manifold or vacuum line.
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Old 10-27-2018, 01:14 AM   #3
joshuah459   joshuah459 is offline
 
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Ive done that. It seems that some of the egr system is missing. the charcoal canister is gone, but there's a bunch of hoses heading to where it should be. Do these carbs have any adjustment settings besides the throttle cable screw? Is there a way to bypass the EGR safely?



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Old 11-15-2018, 02:54 PM   #4
casey360360   casey360360 is offline
 
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Charcoal can and EGR on a carbureted scooter? That doesn't make a lick of sense. Take some pictures of what you're looking at, I'll do some more digging into finding a diagram for you.
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Originally Posted by joshuah459 View Post
Ive done that. It seems that some of the egr system is missing. the charcoal canister is gone, but there's a bunch of hoses heading to where it should be. Do these carbs have any adjustment settings besides the throttle cable screw? Is there a way to bypass the EGR safely?
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Old 11-15-2018, 02:57 PM   #5
casey360360   casey360360 is offline
 
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Quote:
Originally Posted by casey360360 View Post
Charcoal can and EGR on a carbureted scooter? That doesn't make a lick of sense. Take some pictures of what you're looking at, I'll do some more digging into finding a diagram for you.

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After one more page of digging, your bike uses a Linhai VOG260, so it doesn't have EGR or a charcoal canister from the factory. There should be a PCV nipple on the head that routes to the air cleaner, I'm assuming that's what you're referring to?

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Old 11-21-2018, 08:09 AM   #6
Gene563   Gene563 is offline
 
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There's probably an air/fuel mixture screw that's blocked off. When I did my PDI on my 150, I open the cover on mine. I always had to run mine on the rich side to keep it idling.
Perhaps there might be a Youtube video on the subject.?.
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