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Post by rich on Sept 22, 2015 20:04:35 GMT -5
Take ANY wire that is "hot" when the ignition is turned on (and NOT hot wne the key is off) and connect it to a relay. The other side of the relay coil to ground. Run a wire from battery to the terminal side of the relay and the other spade of the terminal side to the pump. Then the pump is "on" when the key is on, off otherwise, with all pump current coming from the battery. Plug that vacuum port and ride happily. ps: I ended up also getting a cheap pressure regulator to make sure the pressure was only 2 psi into the carb. Thye needle valves in these things are cheap little things, not that good at a high pressure. Great. Thank you. This scooter is in pretty decent shape and I've had fun getting her running down the road. Now if I can just get her going faster than 35mph  ha |
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Post by rcq92130 on Sept 22, 2015 21:17:09 GMT -5
I have found it helps top speed by pointing downhill with a tailwind ....
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Post by rich on Sept 23, 2015 20:10:04 GMT -5
Take ANY wire that is "hot" when the ignition is turned on (and NOT hot wne the key is off) and connect it to a relay. The other side of the relay coil to ground. Run a wire from battery to the terminal side of the relay and the other spade of the terminal side to the pump. Then the pump is "on" when the key is on, off otherwise, with all pump current coming from the battery. Plug that vacuum port and ride happily. ps: I ended up also getting a cheap pressure regulator to make sure the pressure was only 2 psi into the carb. Thye needle valves in these things are cheap little things, not that good at a high pressure. Ok. So ordering something like this: fuel pump look fine? and which psi reg do you suggest? |
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Post by rcq92130 on Sept 23, 2015 21:09:37 GMT -5
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Post by rich on Sept 24, 2015 14:33:49 GMT -5
Cool. I do have a question that I don't think I've been able to find the answer to through all of my searching this forum. Let's say that the vacuum petcock is the big issue here and that they are causing these fuel delivery problems... "What then, is the explanation for the fact that they can cause the carb to not initially get fuel but then work fine as long as you can finally get the scooter cranked?" Thats the part I'm not getting... |
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Post by rich on Sept 27, 2015 18:42:09 GMT -5
bump
Sept 24, 2015 15:33:49 GMT -4 rich said:
Cool. I do have a question that I don't think I've been able to find the answer to through all of my searching this forum.
Let's say that the vacuum petcock is the big issue here and that they are causing these fuel delivery problems... "What then, is the explanation for the fact that they can cause the carb to not initially get fuel but then work fine as long as you can finally get the scooter cranked?" Thats the part I'm not getting...
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Post by JerryScript on Sept 29, 2015 14:32:50 GMT -5
Low rpm low pressure no fuel flow thru petcock. Get her started, rpms increase which increases vacuum, opening the failing petcock more.
A properly functioning petcock will allow fuel to flow at low rpm low pressure.
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Post by rich on Sept 29, 2015 16:01:19 GMT -5
Low rpm low pressure no fuel flow thru petcock. Get her started, rpms increase which increases vacuum, opening the failing petcock more. A properly functioning petcock will allow fuel to flow at low rpm low pressure. I see. I actually ordered a new petcock for 8$ just to see if I could get an answer for 8$... No luck. In fact I couldn't even get the scooter to start at all with the new one! The old one at least let me get her started after cranking for about 5 minutes. So...now it's on to opening her up and doing the valve thing today. If that's not it then I'll move onto something else... Round and round we go! |
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Post by rich on Sept 29, 2015 23:10:44 GMT -5
Well. Valves were way too tight. Set them both to .004, put all that PIA plastic back on and still.......nothing. Not even thinking about starting it seems. Even put the old petcock back on to see if she would at least give me a start after minutes and minutes of cranking. Let's see, what else can I spend more time/money on trying...cdi, carburetor, new scooter? ha
update: it was the carb...installed another one, took off all that emissions non sense and now she cranks right up and BLASTS down the road. almost too fast for this thing!
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Post by JerryScript on Oct 2, 2015 20:30:57 GMT -5
Right on! Great job! Now you can enjoy the ride!
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