83 gs650g petcock question

[Big Daddy]

Hi there my sweet gs is playing mind games with me but I think I figured out what it is but I need a second opinion.
So I'm riding and the bike boggs down and stops, it won't start up again till I put it on prim then she starts right up and go to go. She has done this to me before at about half a tank but i didn't know the problem, so I drained the tank checked the fuel vent and took the petcock off and checked the strainer and it was clean. I put everything back and filled the tank and it was fine again, till half a full then she acts up. So my diagnoses is the petcock what do you think?

[cowboyup3371]

Check your vacuum line coming off the petcock and make sure it fits snug. Mine did this exact same thing only going uphill after I tried changing the hose to one I thought would fit better. If both of them fit fine then it could possibly be your petcock.

[Big Daddy]

i'll check it out tomorrow and price out a petcock