Me and a buddy just changed my oil and replaced the spark plugs on my 05 de, I start the car up but it now makes this rattling slash bubbly noise and I'm at a huge torque loss. Car vibrates while its running and it smells rich also.

Any suggestions or thoughts? I really need to make this work normally again

 

Maybe put the plug wires back in the wrong order?

 

Make sure your strut bar isn't touching the plenum, it will make that sound/vibration if its touching.

 

Your plugs are not firing cleanly. What brand and model of plugs did you replace the OEM ones with? Recheck the order they were connected and make sure the coil packs are properly connected.

 

What brand spark plugs did you use? I have bosch iridium plugs in mine and work just fine. However, the owner's manual recommends platinum plugs. Your motor may not be running as efficient as it should be if it's running rich. Could possibly be a cylinder misfire??? Check to see if all the plugs are properly gapped as well. Should also add a small dab of anti-seize lube on the threading of the spark plug before installation. Then make sure all the connectors are back in place as they were before. Not sure if it helps, but that's really all i could think of.

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My guess would be spark plug gap wasnt checked....

 

No check engine light?