Originally Posted by
charles1943
You say your carb is only a few 100 miles old. There are lots of Chinese knockoff out there and they are 99% GARBAGE!! B absolutely sure it is Genuine WEBER!!! You may have a vapour lock situation and there are also MANY junk fuel pumps out there!! I recommend checking your fuel pressure....esp. when hot. S.B. between 1.75 & 2.5 # p.s.i. Post your results please so we can continue helping. When a client was having problems with his carb I sent this to him: I'm wondering if there might B something else lurking in the bushes....failing fuel pump ?? Leaking inlet manifold or other air/fuel induction system issue. Faulty ignition timing/advance...failing points, fouled plugs [remove and inspect, starting w/cylinder #s 3 & 4] nasty plug wires, poor or incorrect spark plugs, failing coil, failing condenser in the distributor, burned distributor points, low compression, leaking head gasket. Any of the above-mentioned candidates could even B an 'emerging problem'....1 not full-blown yet but problematic enough to make your engine run poorly. Also I tend 2 agree with the chap whose thoughts point to a carb problem but it's not unheard of that 1 kind of issue will mimic another 1 and that the actual issue is EXACTLY what we were absolutely certain it couldn't possibly be!!