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Post by speedracer on May 22, 2011 14:16:58 GMT -6
Been checking out the Burgman 400 to replace the 250. I'm going to purchase a new carb for the 250 and either sell it or give it to my son. Finding a carb isn't easy as the prices vary a lot. Anyone know of a good source that will fit the Linahi engine?
Thanks
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Post by speedracer on May 20, 2011 13:07:14 GMT -6
The oil you have is perfect for your scooter. It can handle high rpms and higher temperature's as well. Under the bolt to remove the oil is a spring and a small filter. The spring does put tension on the bolt so it can seem harder to remove. Are you using a 19mm socket with a 3/8" ratchet?
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Post by speedracer on May 20, 2011 13:00:45 GMT -6
Scooter has been at the Chinese scooter shop now for a week. The owner there has taken his time going over it and he is convienced the problem is the carb. He said there is no way to control the A/F mixture screw and throttle screw so that it idles at the same speed. He did a compression test which was fine. Every time he pulled the plug after making an adjustment and riding it the plug was white. He said he has changed 100's of carbs as they are just plain junk. He said if I wanted to order a carb and have it shipped to him, he would install for it me. So that's where it stands now.
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Post by speedracer on May 15, 2011 11:10:42 GMT -6
Todd, do you know how many turns you have it out? If you do screw it in and count turns. If right back it back to wear it was and every now and then give it a check.
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Post by speedracer on May 14, 2011 18:28:50 GMT -6
John, I took the fuel pump apart today and there was nothing in it. Yesterday I put the OEM fuel pump on and changed the fuel hose as well. The gas is clean in the tank and through the fuel filter, pump, and now for sure the fuel hose to the carb.
The only thing I can come up with is that something in the gas coated the inside of the carb bowl and is changing the color of the gas. When I had the bowl off to re-clean the jets and passageways the bowl didn't look dirty at all. I have about a quarter of a tank of gas left, so tomorrow I will run it almost dry then fill it up.
What I would like to try is to remove the fuel line at the carb and open the drain on the carb bowl and spray carb cleaner in it. Does it sound safe to do? Not going to try running engine as I know it won't start with carb cleaner.
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Post by speedracer on May 14, 2011 14:19:51 GMT -6
Earthman look at pics on page 1. Clear gas from filter and dirty gas from carb drain. I changed the pump back to the oem. I have drained carb bowl at least 10 times and still no clear gas from bowl.
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Post by speedracer on May 14, 2011 12:54:53 GMT -6
I certainly agree with you about time vs part cost. I am amazed how little attention the color of the gas received. Even the top names here except Alley said anything. Apparently I didn't know that gas changes color between the tank and the carb bowl. It must as NO one has said it remains clear. I posted 3 pictures and no expert has mentioned how it's not normal.
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Post by speedracer on May 13, 2011 11:40:21 GMT -6
Yoster, it is anything but cold here. A cool day is 78 this time of year, plus I ride the scooter or did ride the scooter daily. The enricher is fairly new.
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Post by speedracer on May 13, 2011 10:21:20 GMT -6
Fuel from tank after fuel filter. Probelm?  Installed old fuel pump and will see it that changes anything. |
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Post by speedracer on May 12, 2011 20:09:39 GMT -6
CE, the drain line was changed when I bought the scooter last August. The valves were done a few months ago, so it's not the valves.
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Post by speedracer on May 12, 2011 20:07:27 GMT -6
Alley, there is no way any coolant can get into carb. I have Prestone in it so it's more yellow and not this orange color. I poured some of it on a plate to evaporate but it left a tint to the plate that you could rub off with your fingers. Yet the inside of the carb bowl was dry and clean when I removed it. I am baffled by it. I need to know what that crap is so I will put the intake manifold and carb on tomorrow, fire it up and then drain the carb bowl again and if it is not clear I'll take a picture of it.
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Post by speedracer on May 12, 2011 18:38:00 GMT -6
John, I am thinking carb rather then valves. What I am going to say will make no sense to anyone, but when I cleaned the carb the second time I drained the gas out of the bowl by opening the screw connected to the CVT cover and it ran it with a orange tint. The carb bowl was clean when I took it off. Now the third time I cleaned the carb was a few days ago and again the gas from the bowl had a orange tint to it. Now I'm thinking I have bad gas so I take a measuring cup and pull off the fuel line after the filter and it runs out clear like water. All the fuel lines are Goodyear including the drain line on the carb bowl. How on earth does clean gas turn into orange gas from the pump to the carb bowl?
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Post by speedracer on May 12, 2011 13:04:18 GMT -6
mcalli, It's not only the problems I've encountered with it, it's what needs to be constantly removed to get to a problem, if that is the source of the problem. I have 3 cars, well one is in storage for the grandkids collage education.
Right now the scooter is sitting in the garage, the seat is off the bottom side panels are off, the carb is off after it's 3rd cleaning, and the intake manifold is off. The problem with it seems simple, but it's not. It either idles at 2300 or 1500. No inbetween at all. I can tell you this have no fear as to turning out the A/F screw as it can go at least 8 turns before it comes out.
Anyway, I have tried the A/F from 2 to 3 turns out and it's like it does nothing at all. Less then 2 it will stall and not start. 3 turns out and it runs the same as 2 1/2 turns out. The intake manifold has no cracks in it, the air box has no cracks in it. The air filter is clean as a whistle, the gas filter is brand new. The plug is brand new, the coil is brand new, and the CDI is brand new. When putting the screw driver on the throttle screw it takes the smallest fraction of a turn to either increase the idle or lower it. Plus it takes a minute to either increase the rpm or lower it. All this done with a hot engine after a run. With that fraction of a turn the idle will go up to 2300 or down to 1500. It runs best at 2300 however it's too fast as it will force the rear wheel to engage.
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Post by speedracer on May 11, 2011 15:58:13 GMT -6
LOL After saying how crappy it runs, this forum is not the place for me to sell it. To answer the mileage question 5200.
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Post by speedracer on May 10, 2011 17:53:03 GMT -6
I have had enough problems with my 54B that is was time to retire it and leave it alone. I have come to the conclusion that it will never run right for longer then a day or two. Sick and tired of doing this, doing that, etc, etc, etc. It's simply a POS.
There is no cure for it, it's terminal. The only two things I haven't replaced is the POS engine and the kitchen sink. I can't remember a day that I didn't remove the seat. A week hasn't gone by without removing the bottom plastic panels.
I may leave it at a Chinese scooter shop and let them have it all summer and try to find out what's wrong with it, or I'll sell it as a scooter in need of a mechanic.
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