Loosing prime. Single carb on a js 550. Problem was while I was tuning I'd ride up to the beach and turn adjustment screws as I'm in that portion (I believe) of tuning on the low end screw just to dial that in. Pop the hood off and I'd watch the fuel lines bubble back towards the tank. I wasn't paying attention really to fuel lines as I basically pressure tested everything from outlet of tank to the carb itself so I know there wasn't a fuel leak. All of a sudden I reach down to feel lines and the pulse fitting is just sitting in the bilge. Really explains why tuning the low end was such a pain in the ass. Whenever I would pressure test the carb I'd put my fingers over the out and pulse line, (probably seating the pulse fitting better again) and retry with luck. I was getting pissed because it felt like I needed to keep going up in jets so I'd swap a low speed jet for a higher jet to try and get it to idle and have low end punch. Everything was going back and forth but now that the pulse fitting was leaking it totally makes sense.
I may have screwed myself but I put a light bead of jbweld. I'm at the river for a week and if all I gotta do is mess with the carb after I'm done with all of this when I get home I'll be a happy camper.
Gangster
Another idea is to tap the hole and use a o-ring seal fitting if you can find something with the same internal diameter. This might be over the top. JB weld should be fine pending you cleaned the surface very well beforehand.
