Originally Posted By: Johnny2Bad
Originally Posted By: Ducked
You might try running some fuel gas (I MEAN actual gas, as in butane or propane, not petrol) into the air intake. That's what I do after a long stand and it seems to work. Same effect as starter fluid but no adverse effects on lubrication (plus I don't have any starter fluid).
You can get the butane from WD40 or similar which will also give you some initial cylinder lubrication, though I don't usually bother with that.
After a year I'd take the plugs out and turn it over a bit first, but the plugs are easy to get to on my car, and it probably isn't really necessary.
At the Big 3 factories, engines used to be started and run-in on oxy-acetylene gas, not gasoline, for first run before installation in the vehicle. Maybe still do, wouldn't take anything more than a "special" ECU tune at the assembly station. Clean, much safer, appropriate cylinder pressure load, etc.
Say WHAT? Why on earth would they do that?
It be very susceptible to flashing back, since the whole charge is ignitable. Bit like trying to run on oxy-hydrogen.
It'd accordingly be quite dangerous, and fairly expensive. Miss-adjusted welding torches smoke a lot, so it wouldn't necessarily be all that clean.
Since oxy-acetylene flames can weld steel, get it wrong and your aluminium bits would be puddles.
And it would tell you very little about how its going to run as an air-fuel engine for the rest of its life.
Sorry, I'm not getting it.
Running-in on methane/ethane/propane or butane, with air, does have some or all of the advantages you mention, thouugh.