How easy or affordable is it to replace two cylinders? on 2002 Ford Escape

We paid a mechanic to replace the spark plugs & cylinders as well as the spark plug tube seals since oil was present around spark plug. He only replaced the plugs & let us drive off with two of them misfiring. We broke down on the freeway. Now it looks like we at the very least with have to replace cylinders. How affordable is this for this car? And would that cause a rough idle or loss of power? Our light for check engine never came on.

by in Potwin, KS on May 17, 2014
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , May 17, 2014
Don't normally answer Potwin Ks. but it means an engine rebuild. If they were working before, what did the mechanic do, and do a compression test to see if the cylinders are actually the problem.