Do you have a fibre washer on the bottom of that bolt? Put one in there and it may tighten everything up.
Yes, I do have the fibre washer at the bottom. Looked like the gas was coming from the top of the banjo filter. Going to try a little sealant as Feetupfun said. Thanks!
The top ring of the filter is normally the only thing used to seal the top side of that banjo joint. There may be a minute defect in the filter ring or either of the metal surfaces. There is no law against using a bit of sealant there.
Other possibilities include a tiny hole or crack in the bowl or the banjo bolt thread bottoming out.
A protruding tip plug is better for that motor. I use BP5ES and BP6ES. Yes 0.021" is a good gap if you still have the standard ignition system.
The bolt appears to tighten fine, I'll try a little sealant first before ordering a whole kit. And I'll try the BP6ES plug. Thanks!
After finishing up my 1970 M49, when I turned on the gas, I get a leak from the top of the banjo fuel filter (white area). In the parts book looks like there is no gasket between that and the float bowl , just the filter. I already replace the the o-rings and bowl gasket so I'm guessing I need a new filter/and or a float needle? It still has the original plastic needle in it. One last thing, would a NGK B6ES (.021 gap) plug be the right one to use? Thanks
Just joined Trials Central. I have a 1970 M49 Sherpa that I'm getting back on the dirt( may have questions eventually!). I also have a 1977 Cota 348 that I use for vintage trials in central and southern Calif.
M49 Carb leak
in Bultaco
Posted
Yes, I do have the fibre washer at the bottom. Looked like the gas was coming from the top of the banjo filter. Going to try a little sealant as Feetupfun said. Thanks!