no, i get that.... but it has been mentioned, but pushed off, and not been addressed.... or fixed.... or looked into by the o/p, because fifteen more opinions re tossed at him, and he aint getting the priority......my point......
I agree with MOB, more info needed for a real troubleshoot, but pending that: If it runs in PRIME but not in the normal ON position, the difference is that PRIME doesn't require vacuum but ON does. Check your vacuum hoses to be sure there are no leaks or kinks. Lack of enough vacuum to fully displace the diaphragm and poppet valve can cause lack of flow/starvation. The leakage of the petcock is probably a separate issue that should also be dealt with. Sounds like time to repair/overhaul/replace the petcock.
Try removing the inline fuel filter... For the most part they are known and do cause starvation issues... Be sure to fix or replace the leaking petcock... Also just because you've read that they are used does not mean that they are 100 % as some folks have problems and some don't. I installed one years ago and it caused me grief but it was due to a slight kink that cautious routing and trimming worked out; but results vary a lot by brand too...
sorry T, I was just getting this " letme check 5 other things before checking the one CERTAIN issue... "which is a leaker....
and it gets pretty tiring repeating to tacke the CERTAIN visible problem, before playing with otherstuff.... fix the leaker... first.
changing fifteen things at once, and never doing root cause from the visible problem, is rediculous....a+b+c+d don't mean anything unless "a" gets fixed first.
he might not have a vent issue
he might not have a kinked line
his filter might be working fine
his petcock is leaking fuel into the diaphragm area, and it should not be doing that, and as a result, I pretty much gurantee that diaphragm is now shot, and needs replaced.... never seen one leak out of a weep hole and NOT needing to be replaced. that's a given.
kinda like someone saying their tire is loosing air, and going on and on about removing the wheel, and sticking it in a tub of water, when they can dap a goober of spit on their finger, swipe across the schrader valve, and rule out, or replace, or simply tighten the valve stem insert....
kiss system.
