Ford messed up the gapping on the OEM plugs and this is part of the problem with the Ecoboost shudder at 55-60mph. The spark plug gaps are all over the place from. 035 to. 046 on just one members engine.
At the time of publication, the average cost of concrete for a 400-square foot slab, the typical size for a two-car garage, ranges between $583 and $637 or between $1.46 and $1.59 per square foot. On average, contractors will put in about 13 hours of labor to finish a two-car concrete garage slab.
This price is usually for commercial floors and includes staining or scoring the floors, according to John Buteyn of Colorado Hardscapes. $6-$12/ sq ft. The typical cost for polished concrete in a residential floor because it is more difficult to get a consistent look using a smaller machine, according to Buteyn.asic cost for a polished concrete floor that requires only a few levels of grinding, according to Greg Demmert of Demmert & Assoc. in Los Angeles.