Exhaust splatter

[Terrys]

Are you running an old Zenith Carb? It may have a warped bowl section, casuing the fuel level to run high, and over fueling. As much as I think the Weber 34 ICH is a compromise, it does cure the Zenith problems easily, and fairly inexpensively. The drawback to it is that it has a 34mm throat compared to the 36mm throat of the Zenith. Keep in mind that overfueling when cold means you may be "washing" the cylinder walls (and rings) of deposits which maintain compression.
You could go to any Midas and ask them for a short elbow that will slip over the side exiting pipe to direct the exhaust rearward. Or, I spose you could park backwards so the exhaust is not directed towards the building.

[bkreutz]

I was getting the same "decoration" on the wall of the shop next to where I park, I thumb tacked a piece of white cardboard there, when it gets looking particularly nasty, I just change it. (kinda like a diaper)

[Cutter]

Are you running an old Zenith Carb? It may have a warped bowl section, casuing the fuel level to run high, and over fueling. As much as I think the Weber 34 ICH is a compromise, it does cure the Zenith problems easily, and fairly inexpensively. The drawback to it is that it has a 34mm throat compared to the 36mm throat of the Zenith. Keep in mind that overfueling when cold means you may be "washing" the cylinder walls (and rings) of deposits which maintain compression.
You could go to any Midas and ask them for a short elbow that will slip over the side exiting pipe to direct the exhaust rearward. Or, I spose you could park backwards so the exhaust is not directed towards the building.

I've got a 2.6 so a stromberg carb, from reading all the links that amcordo posted it seems like a cold start, condensation and soot thing. Probably will do the elbow thing or a flapper as it seems the simplest solution- pretty sure autozone down the street has elbow parts.

Backing in to my garage would be a challenge with the grade and corner I have to make, and there are shiny italian things in there I really don't want to bump (or spray with soot!).

[disco2hse]

OK so others have all said what I thought, except that I think your iPhone is trying to tell you something.

But yeah. Pretty standard for a cold engine. It's not a good idea to warm a cold engine by idling it for a long period, not too good for local smog levels either. So you could: get more adept at positioning so the coverage is more even, paint the wall (which the previous would achieve anyway), stick a valuable plant in there so the missus won't be complaining about the paint on the stains (I mean the stains on the paint) anymore, or screw a piece of plywood to the wall.

I do think a flapper would lose its charm pretty quick. I had a similar issue and my house is off-white. I got Midas to put a twisted end on the exhaust that directed the flow down. Now the plants and pavers catch all the crud.