Bad vibration in motor - 2006 Hyundai Sonata

Several things can cause a vibration problem. Some simple things to look for espically if anything has recently been done under the hood. Check all plug wires or connections to fuel injectors and any vacuum lines to insure all is secure. Make sure have clean fuel, possible water contamination and check for clean engine air filter. It is really too new to have broken engine support but possible defect. This can be checked by going through the gears Forward/ Reverse and appying slight throttle in each with an observer. The engine should not ride up excessively.