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That fuel pump thing is OK with me, I am never buying from them anymore anyway.

I was not trying to put you down at all as I see that confusion often in the various forums. So I offered proof of which machine is what. Nothing more and nothing less. I have no idea why some also put the B after the scooter name as it has nothing to do with the engine for sure.

Your help has been appreciated. Will let you know after I get my new fuel pump as to how well it will be working.

This might even be the Rocketa part I was referring too.

My scoot is MC 54 250B. The one you posted is for the MC 54B 250. The 54B signifies the horizontal engine machine and the 250B is more of a variation of some sort. It is on my paperwork and in their catalog stuff.

I won't go into my scooter parts list to check as it does not matter. I won't go near Rocketa to buy anything any more.

Thanks for your inputs.

It is on my floor ahead of the feet. I need a fuel pump and have already ordered one for $19.99. It should be here by next Friday.

Was working on the scoot a bit ago and it would not start. Running it would not bring gas out of the tube from the tank. It is just too slow as I pointed out a couple times even with a new battery. So I put on my primer cup and started that way. Now it was able to flow gas out the tube from the pump. So I switched to the pump to carb setup and it started and ran well. It ran till the radiator got hot and the fan came on. But it also started running slower and rougher. When it stopped I pulled the Vac line from the ACV and it had gas in it. So I pulled the vac line from the fuel pump and a lot of gas poured out of it.

Good thing that I already had order another pump. I ran a bit without the vac line attached and it ran well but no gas was coming from the vac line hookup on the fuel pump. So it must be the vacuum that somehow pulls the gas out and up to the carb.

Will find out next week end if a new pump fixes the problem.

The new pump I already had did not fix a thing which may be why I have been posting for so many months and getting no answers. Bad pump seems to be the problem and if another pump does not fix the problem that will be three in a row or I am chasing the wrong thing. No gas should be coming from the vacuum port on the pump.

Hello Alleyoop. I am again looking to buy another fuel pump. My original one won't work so I bought another one at about $40. And it appears to be the one to pump gas out of the vacuum line.

I have been looking on the forums for another one but would rather pay in the $20 or less range. Most do not show dimensions or bolt hole locations. Most seem to be at about 3.00 inches but my scoot requires 3.375 inches.

Do you know of any dealers that sell in reasonable prices with mounting hole dimensions of their products on display?

Been shopping and now ready to go to he doctors.

I am not doing too well today Alleyoop. When the engine was running it was slow and made lots of black smoke. I found the fuel pump was allowing, or I caused, fuel to be in the vac line. It looked clear and had no obvious odor so I took a small sample in a pie pan out to the driveway and lit my lighter. Big blaze for a moment. When the engine did run it put out black smoke and made backfiring noises and would not idle. I played with the valve settings but nothing changed until it would not run at all. That is when I was chasing the vac lines again and found liquid in them again.

So I took that fuel pump out and put the one I swapped out a couple days back in its place. So far the engine try's to start but has not yet. If this one fails I will put the other one in for a quick test and if it fails again, I will need to buy another fuel pump.

And for the vac lines I had it just like you wanted for a couple days now, including reversing the one you called a 'Y'. It seems like you have not read my words or I am not speaking properly. I will not be working on the vac tubes any more until I get this fuel pump thing straightened outs. If I need another fuel pump I will try to find a different vendor as this 'New pump' may also be bad. That is why I will run this one today, if it will, and then try the other one also. To make sure if it is good or bad or my mistake in setting it up.

I sure would not think it would work at all if I had not put the 'fuel in' and 'fuel out' and 'vac' tubes in the right places.

Tomorrow the wife wants to spend shopping and I have a doctor in the afternoon. So not much progress till Friday or Saturday.

Back to the scoot shortly.

Have a good day.

Alleyoop. When it ran good the vent tubing went to the fuel pump and the rubber carb mount and the ACV was left unconnected. When I tried to connect to the ACV, or put my finger over the end of the tub, was when the engine would quit.

Today the vent from the tank is hanging, no longer connected to anything or the charcoal canister. The other vent hose has also been disconnected from the charcoal canister and is free from the connections to the other vent tubes. It is just hanging around with nothing to do. It is currently just the way you sent it to me to be done.

Each time I try to start the engine with the ACV disconnected it will run for a few seconds at most then die. Then I can not get it to restart and have to wait till the battery is charged again. I just went through that a few minutes back. Not sure if it will start with the ACV is connected. Will try that tomorrow.

Somehow wonder about the electrical system as this is a new battery but only gets a few turns on the starter to kill off the battery. That is why I went and changed in my older battery for this newer one.

I spoke wrong in one of my earlier posts as I said I need to go to the doctor tomorrow. My wife proved me wrong and showed I was reading the calendar wrong. So tomorrow I will have some time to try the starting again.

Have a good night.