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Post by cinnamon on Apr 17, 2013 9:47:16 GMT -5
I recently bought a Roketa 150cc Sicily. The previous owner installed a new carb a few days before but didn't replace any of the fuel lines. It developed a leak at the petcock. My b/f and I replaced the fuel lines and reconnected everything. Now it won't start though it tries really really hard. I'm wondering if we connected the fuel lines wrong. The Assembly guide shows the fuel line with the fuel filter going to the center connector of the petcock. However, after doing some research on the net it seems this isn't right. I found several images that show the fuel line with the fuel filter going to the bottom connector of the petcock and the vacuum hose going to the middle connector. FYI - the vacuum hose also has a T-connector further down going to other things so I maybe confused as to what this hose really is. Can anyone tell me which way it all actually connects?? Attachments:
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Post by scooterelements on Apr 17, 2013 10:22:59 GMT -5
I recently bought a Roketa 150cc Sicily. The previous owner installed a new carb a few days before but didn't replace any of the fuel lines. It developed a leak at the petcock. My b/f and I replaced the fuel lines and reconnected everything. Now it won't start though it tries really really hard. I'm wondering if we connected the fuel lines wrong. The Assembly guide shows the fuel line with the fuel filter going to the center connector of the petcock. However, after doing some research on the net it seems this isn't right. I found several images that show the fuel line with the fuel filter going to the bottom connector of the petcock and the vacuum hose going to the middle connector. FYI - the vacuum hose also has a T-connector further down going to other things so I maybe confused as to what this hose really is. Can anyone tell me which way it all actually connects?? The bottom with two outlets one goes from the gas tank to the petcock and from the petcock to filter to carburetor. The top one that says vacuum connects there to the "T" and that "T" connects one to the intake manifold and the other to the vacuum port on the carburetor |
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Post by scooterelements on Apr 17, 2013 10:25:15 GMT -5
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Post by cinnamon on Apr 17, 2013 12:13:00 GMT -5
Thanks! That def makes it sound like we got it backwards. Despite what the assembly manual said! sheesh.
Will we need to clean the carb out now do you thing?
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Post by triker on Apr 17, 2013 12:44:39 GMT -5
The way you have the hoses are hooked to the petcock is correct. That is how mine is connected. The lower hose (vacuum) goes to a T fitting. one hose from the T will go to a fitting on the intake manifold and the other hose will go to a vacuum port on the carb., or if it has emission stuff it may go to a vacuum valve on the fuel tank vent hose. If your carb doesn't have this fitting and the emission stuff has been removed you can plug this hose or remove the T fitting and run a hose directly from the petcock to the fitting on the intake manifold.
Roy
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Post by scooterelements on Apr 17, 2013 13:14:59 GMT -5
Thanks! That def makes it sound like we got it backwards. Despite what the assembly manual said! sheesh. Will we need to clean the carb out now do you thing? no i dont think so. put everything correctly and see how it starts. should be fine. |
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Post by alleyoop on Apr 17, 2013 13:20:39 GMT -5
Mine does not have any Emission stuff on it so I only have ONE VACUUM line from the INTAKE MANIFOLD to activate the Fuel Pump and ACV valve on the carb: Alleyoop  |
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Post by dyoung1167 on Apr 17, 2013 16:24:59 GMT -5
the port frfom the center of the petcock is indeed for vacuum. many scoots come with the petcock mounted to the frame and have 3 hose ports. the center port is always for vacuum. yours is mounted to the tank so although the threaded one is still a port it eliminates some guess work. your pic shows your lines are connected correctly for your application.
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Post by cinnamon on Apr 20, 2013 11:32:27 GMT -5
We switched the lines around the right way and she fired up. She doesn't want to stay that way though. We gave up when the battery started to run down. The fuel filter was only filled about half way. Maybe gravity just needs to do its job?
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Post by scooterelements on Apr 20, 2013 12:33:45 GMT -5
We switched the lines around the right way and she fired up. She doesn't want to stay that way though. We gave up when the battery started to run down. The fuel filter was only filled about half way. Maybe gravity just needs to do its job? no thats the reason you have a petcock is to get that fuel to the carburetor. its like a fuel pump operated by vacuum. could be the petcock is going bad or something. mine has gone bad before. |
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Post by cinnamon on Apr 21, 2013 21:09:22 GMT -5
Looks like you were right and it's the Petcock.. We took it off and it was grimy and not letting fuel flow.
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Post by cinnamon on Apr 21, 2013 21:54:16 GMT -5
I got another question!! LOL.. since we replaced the fuel and vacuum line I can't help but wonder if we didn't get the wrong size. Sure it all fits but.. dammit my OCD says "what if?!" hehe.. The part listed on the product guide is no help MC17-150-3-12.. I mean .. Really?! LOL
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..BAD TO THE BONE..
