I need help

[chazza]

i have a honda bali sj50 moped.
just fitted a new engine in and it wont start .
just fitted all panels back on and tried kick start and electric start still wont start
there is fuel going in and a spark
all electrics are connected up and that no loose wires/cables
does anyone know what it cud be ? or what we cud try?

much appreciated

[Cigaro]

When you say there's fuel going in - going into where? Into the carb? or into the actual cylinder?
Other than that I'd check the compression and also double-check that the ignition timing is right (it's all very well having a spark but it's useless if it's happening at the wrong time).

[chazza]

hello just bit more about the bike its a 2 stroke and its air cooled , by fuel going through , there is fuel in the fuel filter , just a question , with the battery being flat , will the fuel pump be able to pump fuel round to the engine to allow the engine to run ? as i know the battery is flat as the electric start is slow and sluggish and sounds like like a car would , with a flat battery.

the person i brought it from claims it was running when it came out of the bike.

i know it has compression , but only know this by the sound of it , could it loose compression while being transported around and re-fitted into a new moped ?


ignition timing , do 50cc mopeds have ignition timing , i never knew they did , how does this work ?

[chazza]

anyone?

[chazza]

just found out that there is no fuel going through to the fuel filter, what can we do to get it flowing and get the moped running again?

[twincam]

Did you prime the pipes when putting it all back together? If not u'll have to either keep kicking until fuel reaches there, or suck the fuel pipe going from the tank to the carb - beware not to swallow any.

If it doesn't flow through, there might be a blockage.

If fuel is getting there and its still not starting, making sure the plug is getting a big enough spark (the battery MUST be charged fully in order to give a big enough spark), add some nitro methane straight into the head - only used a small amount as its VERY explosive. Use with care and good luck

After effects are a small smell and a will puff a little more than usual until it has all burnt out.
____________________
Current Bikes: 1990 RXS100, 1988 RXS100, 2002 NRG MC3, 1988 JOG CG50E
Other bikes include: 2002 CBR954RR-2 (Fireblade), 2005 CB900F (Hornet 919), 1998 VFR800i (Pre Vtec), 1997 GPZ500S, Honda SH-125, Go Ped 49cc, Italijet Motocross 49cc, Italijet Cruiser 49cc, Puch Maxi 1970 49cc

[chazza]

what do you mean prime the pipes?

[chazza]

thanks for the pm.

[chazza]

do any one know where the vacumme pipe from the engine is ment to be connected useally? mines the air presure/carb set up

[chazza]

been told it goes to the carb , but it goes to the pump , as got a mouting clip for the pipe to be held there

[chazza]

https://img.photobucket.com/albums/v706/cruiseforums/Photo-0701.jpg
https://img.photobucket.com/albums/v706/cruiseforums/Photo-0702.jpg
https://img.photobucket.com/albums/v706/cruiseforums/Photo-0703.jpg
https://img.photobucket.com/albums/v706/cruiseforums/Photo-0704.jpg
https://img.photobucket.com/albums/v706/cruiseforums/Photo-0705.jpg


here we go people , pipes are off carb , to show you whats what ,

[chazza]

fire up ok with a drop of fuel put into it

[twincam]

Where did you put the fuel? That must mean there is fuel starvation... Did it die after it burn't the fuel?

Hmm - Is there a pump on your model? If yes there could be a problem with it, make sure its pumping and also getting power (you may have left a connector off? If you want to check it get a multimeter and check for continuity... If its getting power and still not working, its bugger'd.)
____________________
Current Bikes: 1990 RXS100, 1988 RXS100, 2002 NRG MC3, 1988 JOG CG50E
Other bikes include: 2002 CBR954RR-2 (Fireblade), 2005 CB900F (Hornet 919), 1998 VFR800i (Pre Vtec), 1997 GPZ500S, Honda SH-125, Go Ped 49cc, Italijet Motocross 49cc, Italijet Cruiser 49cc, Puch Maxi 1970 49cc

[twincam]

Just checked your picture - was thinking if it was either a fuel pump or a filter.. but looks like the little black in-line box is the filter, and that is your pump - am i right?

If it is, remove the oulet pipe and crank the engine over.. fuel should come out (make sure you have a bucket or even a funnel over the fuel tank (prices of fuel these days
____________________
Current Bikes: 1990 RXS100, 1988 RXS100, 2002 NRG MC3, 1988 JOG CG50E
Other bikes include: 2002 CBR954RR-2 (Fireblade), 2005 CB900F (Hornet 919), 1998 VFR800i (Pre Vtec), 1997 GPZ500S, Honda SH-125, Go Ped 49cc, Italijet Motocross 49cc, Italijet Cruiser 49cc, Puch Maxi 1970 49cc

[chazza]

just been told this isnt actually a pump its a fuel valve which lets pressure through , as my fuel system is pressurised , yes it died after it had burnt the fuel laying in the head of the engine by the spark plug at least i can say my engine i brought for it , is fine.