2004 Jeep Liberty Limited review from Puerto Rico

The engine vibrates too much and it makes a rattling sound similar to a diesel engine.

I owned a 2004 Jeep Liberty Limited, 2 x 4, 3.7L. I am very satisfied with this vehicle, but not with the service here in Puerto Rico.

The day after we purchased our Jeep, we noticed a clanking noise very similar to the sound of a diesel engine. The vehicle was taken in for service; the dealer replaced some bad timing chain tensors, the crankshaft bearings were replaced too, and so was the chain case cover gasket and an "o" ring.

The noise was gone for one day, but by the second day the noise returned and now the engine block shakes, black stuff drips from the muffler, white smoke puffs burst when you first start the engine, the engine itself sounds much louder than before, and it expels a very strong carbon monoxide odor like an old car!

I have taken the vehicle for all its maintenance services. My husband took the Jeep to a different dealer and they said that the noise I keep hearing is normal on the 2004 model. If it is normal, why does it come and go as it pleases?

The dealer scheduled an appointment with a Daimler-Chrysler representative. At the scheduled appointment, this person admitted to hear an irregular sound and scheduled our vehicle for service for the following week. The day of the appointment he claimed that we were imagining this noise and nothing is being done. I want to take the vehicle to a mechanic not affiliated to a dealer for a check up. Will this affect in any way the warranty? What could possibly be the problem with my Jeep?