Rocketa Jamaica MC-46-150 Vacuum lines

jskyking · 06-19-2013, 03:59 PM

My Jamaica had a slow idle and was going dead each time that I came to a stop. SO, I bought a new carb, new vac and fuel lines. Now, it wont start at all. I cleaned the old carb, inside and out and replaced the new carb with the old one.

I'm using new gas and I have cleaned the fuel filter. I am getting fuel thru the petcock. My fuel/air screw is 3/4 of a turn out from the stop.

I may have mis-installed a vac line somewhere and have searched all over the internet for an accurate vac line schematic to no avail.

If someone has this diagram or an idea of the scooter's problem, I sure would appreciate the insight.

thx
jt

Weldangrind · 06-19-2013, 10:21 PM

Welcome!

I don't have a diagram, but I'd be happy to help you figure it out. Are you able to remove the pollution device in your area? I did that for my Pastor, and you can read all about it here: http://www.chinariders.net/showthread.php?t=9421

mmsscooters · 12-29-2014, 01:56 PM

just make sure your fuel petcock is connected and take the others off for testing, you should have 2 ports on your intake manifold, make 1 the fuel petcock, and the other the vacuum line from the carburetor and see what id does, those t fittings in the vac system always leak. If not that check your valves

06-19-2013, 03:59 PM	#1
jskyking Join Date: Jun 2013 Posts: 1	Rocketa Jamaica MC-46-150 Vacuum lines My Jamaica had a slow idle and was going dead each time that I came to a stop. SO, I bought a new carb, new vac and fuel lines. Now, it wont start at all. I cleaned the old carb, inside and out and replaced the new carb with the old one. I'm using new gas and I have cleaned the fuel filter. I am getting fuel thru the petcock. My fuel/air screw is 3/4 of a turn out from the stop. I may have mis-installed a vac line somewhere and have searched all over the internet for an accurate vac line schematic to no avail. If someone has this diagram or an idea of the scooter's problem, I sure would appreciate the insight. thx jt
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06-19-2013, 10:21 PM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Welcome! I don't have a diagram, but I'd be happy to help you figure it out. Are you able to remove the pollution device in your area? I did that for my Pastor, and you can read all about it here: http://www.chinariders.net/showthread.php?t=9421 __________________ 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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12-29-2014, 01:56 PM	#3
mmsscooters Join Date: Dec 2014 Location: las vegas Posts: 10	just make sure your fuel petcock is connected and take the others off for testing, you should have 2 ports on your intake manifold, make 1 the fuel petcock, and the other the vacuum line from the carburetor and see what id does, those t fittings in the vac system always leak. If not that check your valves __________________ http://www.mmsscooters.com 2012 Jonway X 44mm Hoca crank 52mm Hoca big bore MMS big valve head raised ports, polished, milled .023 Hoca 26mm carb NCY titanium valve springs NOS wet nitrous system Holley fuel pump MMS variator Naraku CDI HT coil 4' Wheelie bar MMG stainless slip-on exhaust NGK "11" spark plug UNI filter
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