If it smells funky then the mixture is probably off. Take a look at
http://www.carburetion.com/Weber/adjust.htm and go through the adjustment procedure. It is really easy to do and should get you running better.
Somewhere I saw a how-to for choke adjustment, but I could not find it. It does sound like you need to adjust it, that should cure the hard starting. Basically, a lean choke will cause spitting sputtering on acceleration when the engine is cold. Too rich of a choke will cause a lopey stumbling idle when cold. If I recall correctly turning the choke housing CCW is leaner, clockwise is richer. To get a starting point, adjust it so the choke butterfly is closed when cold, but doesn't slam shut hard when you cycle it with your finger. It should just close.
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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)
MEPR: Man, my 4x4 makes all other LUVs look good
