2004 Suzuki Swift Engine Vibrates when cool

Hello there,

My car recently started vibrating heavily when I start it after parking for a while. The vibration is so heavy when I engage the Drive or Reverse gear that even the rear exhaust knocks on the body. The vibration seems to stop once the engine has warmed up (after temperature rises to normal running engine level). The car drives great once its warm but I face the same problem once the engine cools.

Diagnostics tests have not revealed any problem, we have tried to change various engine mountings, replaced spark plugs and have also checked the air conditioning system to eliminate a cooling fan problem.

I hope you can be in position to help point out where this problem could be.

Thank you