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.
1 ConcreteNetwork.com provided an overview on what most concrete flooring jobs would cost. 2  They noted that the average can be anywhere from $2.50 to as much as $30 per square foot. An economical option, which can just change the tone of the concrete floor, will typically cost less than $6. 2  An elaborate finish, which can come in many various designs and application techniques, can cost upwards of $10 per square foot.