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.
How much do stained concrete floors cost? The costs of stained concrete floors can vary greatly, all depending upon the surface preparation, the difficulty of the job, size of the job, the sealer being used and your local market. On average, a simple stained concrete job can vary anywhere from $2 to $5 per square foot, but if the job requires saw cut patterns and/or different colors, then the costs can be $5 to $11 per square foot.