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Post by insanetexan on May 4, 2012 6:27:46 GMT -6
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Post by insanetexan on Apr 26, 2012 19:41:33 GMT -6
Thanks Cruiser, that is what I was kinda looking for but wasn't sure about the pressure values for the scoot. I am fixing to do a lot to my scoot as far as taking it down and replacing and repairing lots of the plastic. I would like to get all the under plastic stuff done at that time instead of having to take it all down again.
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Post by insanetexan on Apr 26, 2012 15:10:09 GMT -6
It's the MC54B-250 so it is below the carb just behind the radiator in the front. and the pump is even lower than that.
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Post by insanetexan on Apr 26, 2012 14:52:52 GMT -6
I kinda think my fuel pump may not be working properly, considering that with a full tank of gas there isn't a problem with starts and running. After it gets down to around a half a tank or lower it becomes harder to start and maintain a good running engine. Had that problem before on a car I had and replaced the mechanical pump with an electric and eliminated the problem all together. That's why I am thinking about going to an electric and no I do not have any hills or mountains where I am. It is all flat land unless you wanna count overpasses as possible hills. LOL
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Post by insanetexan on Apr 26, 2012 13:31:47 GMT -6
I wasn't quite sure but I kinda figured it wouldn't be the high rated one. Just so many out there to choose from. lol
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Post by insanetexan on Apr 26, 2012 13:18:49 GMT -6
I am wondering if anybody has gone to an electric fuel pump on their 54B scooter [257CC]. If so what would the recommended pressure rating be? I have seen some universal pumps that can go from 2.5 psi to 4 psi and some from 4 psi to 10 psi. which would be the best for the scoots?
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Post by insanetexan on Aug 17, 2011 17:34:22 GMT -6
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Post by insanetexan on Aug 17, 2011 7:25:39 GMT -6
Have you checked the flow of gas from the tank to the pump? Something may be in the tank that is slowly chocking off the gas supply to the pump.
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Post by insanetexan on Aug 9, 2011 8:00:04 GMT -6
Speed; I can't remember what they were. They are still attached to the wiring harness and just hanging under the front cowl.
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Post by insanetexan on Aug 8, 2011 15:43:52 GMT -6
Just a quick note. I have installed a pair of 60w/55w halogen bulbs in my 54B and have not had any problems with melting lenses or back sockets. I swapped the original connection with an H4 connection and also left the rubber boots off the back of the headlights. I did this change over about 2 months ago.
The only problem I have now since the change over is drawing to many amps when the fan kicks in and at that the point the blinkers won't work but I can live with that. lol
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Post by insanetexan on Jul 18, 2011 11:34:32 GMT -6
Damin; Thanks for the correction I did not know that. That is very interesting that they made it all one unit with the crank. Learn something new everyday. Specially on these motors.
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Post by insanetexan on Jul 18, 2011 10:16:44 GMT -6
In my opinion the best way I used to pull engines apart even V8 engines is to open the bottom and pull the rod cap from the piston rod and pull piston and head as all one unit. Then after removal you can lightly tap the piston top with a hammer handle to knock it out. When you put it all back together you will have top compress the piston rings to get them to slide into the head. That is best done from the top anyway (a lot easier). from looks of things you are basically rebuilding the engine anyway. Would be a good time for honing the cylinder and putting in new rings.
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Post by insanetexan on Jul 13, 2011 21:12:28 GMT -6
Cruiser; It could quite be possible that mine has always been there just wasn't sure. I was thinking it was maybe a bearing or something that was going bad.
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Post by insanetexan on Jul 13, 2011 8:48:26 GMT -6
Hello all from South Texas. I finally made it over here.  Looking forward to good advice and helpful hints. My ride as some of you may already know is a Roketa MC-54B-250 with the Linhai motor. |
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Post by insanetexan on Jul 13, 2011 8:42:40 GMT -6
Hey Speedy I am gonna follow this closely to see what your problem is since I too have that same problem. Mine will free wheel tho just doesn't run true. It seems when looking down from the top with no plastic on that the bracket on the muffler side might be a little longer than the one on the tranny side. And when you speed up the rpms the tire and and entire brake assembly has what looks to be a wobble to it but same here when you try to shake the thing by hand there is no side to side free movement. Also when looking at it from the back you can see the wheel and all is cocked to one side.
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.ebay.com/itm/Rear-Hydraulic-Brake-Lever-Assembly-for-250cc-MC-54-Chinese-Gas-Scooters-Moped-/170730268165?pt=Motorcycles_Parts_Accessories&hash=item27c0512605&vxp=mtr