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Post by brndnpnt on Jan 4, 2011 18:05:15 GMT -6
Anyone used heet ISO or know the Heet to gas ratio?
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Post by brndnpnt on Jan 4, 2011 16:33:37 GMT -6
I changed: Fuel pump Spark Plug Fuel Filter. I had beads of water Inside of my carb. So I may have water in my gas. Any ideas of how to purge the system of water. with out takeing off the tank. Starts ok, Idles ok, but when I take off the rpm goes up to about 3k or so then drops down and starts chugging to a kill.  |
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Post by brndnpnt on Jan 3, 2011 21:07:53 GMT -6
No mods done yet! I only have 50 miles on it because the weather crapped out on me so i cant ride it much till next year, Damn indiana! I just thpught id share with ya! I saw parts for this on Chinamotorparts website might be bmsmotorparts or chinamotorparts |
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Post by brndnpnt on Jan 3, 2011 21:00:12 GMT -6
The Fuel hose from the tank to the Fuel Pump/Petcock and from the Fuel Pump/Petcock to the Fuel Filter is 1/4ID, the Hose from the Fuel Filter to the CARB is 3/16ID. All Vacuum Lines are 3/16 ID. Alleyoop I have the pump now... So from the tank to the fuel pump 1/4 and from the pump to the carb is 3/16 and the vacumes are all 3/16?? The hose from the vacume part of the fuel pump looks like 1/4 but Ill get the 3/16 if you say thats what it is. Thanks brandon P New Orleans |
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Post by brndnpnt on Jan 3, 2011 20:55:53 GMT -6
What happened to you does not mean the Fuel Pump is bad. To test it unplug the Fuel hose from the Carb and get a container to catch the fuel. Then Crank the engine over and if Fuel Streams out it is good. If it Trickles out then check your Fuel Filter(it could be Clogged), to test that Take the Fuel Filter out and Crank it again if Fuel Streams out without the Fuel Filter then get a new Fuel Filter. Also check if your Fuel Tank is venting, Crack the cap open a little and see if it still does it. If its not venting it will stop fuel from flowing to your Fuel Pump. Could also be some crud got into your bowl and plugged up your jets. Alleyoop I put the new fuel pump on and started it up but did not install it. It cranked right up  so I am glad thats done. I opened up the old fuel pump and it did not look like anything goes inside but I do think the fuel was leaking out or had a vacume leek somewhere on the seals because fuel was leeking out of the side when i took it off... |
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Post by brndnpnt on Jan 3, 2011 20:52:14 GMT -6
So the stator is that little square on the big fly wheel?
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Post by brndnpnt on Jan 1, 2011 12:58:37 GMT -6
When would you replace them magneto? What does it do?
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Post by brndnpnt on Jan 1, 2011 12:56:00 GMT -6
No Idea though I would look into other ways of making that one work... What broke on it?
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Post by brndnpnt on Dec 30, 2010 22:00:40 GMT -6
What happened to you does not mean the Fuel Pump is bad. To test it unplug the Fuel hose from the Carb and get a container to catch the fuel. Then Crank the engine over and if Fuel Streams out it is good. If it Trickles out then check your Fuel Filter(it could be Clogged), to test that Take the Fuel Filter out and Crank it again if Fuel Streams out without the Fuel Filter then get a new Fuel Filter. Also check if your Fuel Tank is venting, Crack the cap open a little and see if it still does it. If its not venting it will stop fuel from flowing to your Fuel Pump. Could also be some crud got into your bowl and plugged up your jets. Alleyoop I came to the fuel pump idea becasue. I took the carb out and blew it all out good with carb cleaner. Replaced the fuel filter though it did have crud in it. I looked at the hoses and they seemed ok. and I also did let the fuel run into a butter tub with the motor running and it trickels alot more than streams.... I have a fuel pump comeing in this monday ill get back to you after I upgrade the fuel lines and install the pump.... Hope it works. The carb was my first idea so I did that first.. There was some moisture in the carb that looked like water so I also checked the gas by draining the fuel into something so i could look for water....  be back soon |
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Post by brndnpnt on Dec 30, 2010 10:59:27 GMT -6
To tell the truth, I didn't realize that the OEM vacuum pumps failed that often. I know that the Mikuni is a better performing pump and can be rebuilt for only a few bucks. I went with an electric on my YY250T to ensure reliable high speed performance and also to eliminate the need to prime the carburetor manually if you ever need to drain it for maintenance or tuning. The vacuum lines for the 244cc engine are a little long which also takes away from the fuel pump performance. Here's a couple of pictures of my electric pump setup:   One of the things to remember is to mount the pump lower than the tank and angle the output up at about 45 degrees. Where did you get that pump and how much did you pay for it? |
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Post by brndnpnt on Dec 30, 2010 10:58:55 GMT -6
Some fuel pumps are very cheaply made and most you cannot re-build once they go you have to get a new one. But if you do get a new one get a Mikuni they are a quality fuel pump and you can re-build them. They basically have a Diaphgram in them and the Vacuum from your engine pumps the Diaphgram up and down to pump the fuel up to your Fuel Filter to your carb. How do you know the problem is your Fuel Pump, did you test it? Did you check your Vacuum hose going to the Fuel Pump as well as the Vacuum hose coming from your intake. If you have a leaky Vacuum hose it will not pump strong enough to get the fuel to your carb or not fast enough to fill your carb bowl. Alleyoop Everything looked good hoses exct.. Just happends that one day I got off the interstate and the bike just suddenly started acting like it was not getting any gas... |
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Post by brndnpnt on Dec 29, 2010 13:54:59 GMT -6
Anyone taken apart a fuel pump? Whats in these things that make them fail so often?
Any links to electric fuel pump setups
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Post by brndnpnt on Dec 29, 2010 13:52:44 GMT -6
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Post by brndnpnt on Dec 27, 2010 12:11:15 GMT -6
I want to change out my hoses what sizes do I need to get for my fuel and vacuum line... also the hose from the fuel tank to fuel pump look bigger are they? also where do i get the hoses from? |
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Post by brndnpnt on Dec 27, 2010 12:10:50 GMT -6
I want to change out my hoses what sizes do I need to get for my fuel and vacuum line... also the hose from the fuel tank to fuel pump look bigger are they?
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so I am glad thats done.
be back soon