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Post by rudedog on Sept 25, 2013 17:55:35 GMT -5
I am waiting for a new petcock for my Eton 50cc Beamer III. It'll be here in about a week and a half. The old one isn't opening the diaphragm. Can I plug the vacuum and run fuel straight to the carb or will that screw something up?
I just got this thing and I'd like to take 'er out for a test drive. THANKS ! ! !
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Post by sailracer on Sept 25, 2013 18:02:45 GMT -5
Yes you can, I did it for a while until I got a manual petcock. As long as the tank is above the carb, you can do it.
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Post by pmatulew on Sept 25, 2013 18:30:47 GMT -5
The petcock is there so that gravity doesn't override the carburetor float and drain fuel out the overflow vents. Engine stops, gas stops. Otherwise you come back and find a smelly puddle underneath. My aunts leaked. She parks on an asphalt driveway and came back to a sticky mess. It took weeks of sand and kitty litter before it dried. I hope you end up with the correct part. On her 2005 it was the petcock with the small threads. We got one from ScrappyDog. And be careful getting it off that you don't spin the stub on the bottom of the tank.  |
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Post by twinpower on Sept 25, 2013 18:32:07 GMT -5
It'll be just fine running a straight gas line to the carb. I've completely remove my fuel petcock and installed a fuel shut off valve on the line. ;D
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Post by teddy554 on Sept 25, 2013 18:53:19 GMT -5
autozone has those plastic cut off valves u can use till u get what you need
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Post by rudedog on Sept 25, 2013 19:02:36 GMT -5
Sounds good as long as I shut it off when stopped. I'll have to make a trip to AutoZone. THANKS ! ! !
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Post by sailracer on Sept 25, 2013 19:12:54 GMT -5
If your float valve is in good shape, no need to worry. there is nowhere near enough pressure in that 1/8" fuel line to overcome the carb.(not with just gravity anyway)
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Post by rudedog on Sept 25, 2013 20:26:18 GMT -5
I had the carb apart to check for any foreign debris but it was spotless. I did notice the valve you mention had no rubber tip, is it supposed to be bare?
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Post by rudedog on Sept 26, 2013 20:24:06 GMT -5
No go on that one, looks like I'll be waiting for my petcock to arrive. I hooked everything up, started it up, it ran great until in got flooded and gas was pouring out of the carb overflow. Oh well, it was worth a try.
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Post by rae4180 on Sept 27, 2013 7:53:59 GMT -5
someimes a smaller gas line will work with gravty flow. and a smaler gas filter. I have my scoot hooked like that and no shot off.
just line goin from the tank to the carb.
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Post by sailracer on Sept 27, 2013 9:29:12 GMT -5
No go on that one, looks like I'll be waiting for my petcock to arrive. I hooked everything up, started it up, it ran great until in got flooded and gas was pouring out of the carb overflow. Oh well, it was worth a try. I hate to be the bearer of bad news, but It sounds like your float valve has problems. If it's not operating without a petcock, It won't operate right with one either. the petcock on these scoots Is a pulse pump.You need to fix your float valve. |
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Post by rudedog on Sept 27, 2013 18:05:01 GMT -5
Thanks for the heads up on the float valve. I'll get one ordered.
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Post by skuttadawg on Sept 27, 2013 23:35:25 GMT -5
Yes the valve will prevent it flooding while parked . My motorcross CR 80 and 125 only had a valve and they were screamers . Just make sure the hose is routed so gravity will help it flow down from the tank to the carb
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Post by scooterelements on Sept 28, 2013 10:33:40 GMT -5
I have ran my daily drive scooter for the last 4 years with no petcock of any type and never had an issue. My race scooter tho has a Mikuni fuel pump (petcock)
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Post by rae4180 on Sept 28, 2013 13:34:32 GMT -5
If you are haveing a hard time with the flow of gas with gravty flow drill small hole in the gas cap.
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jet
