2004 Nissan Frontier XE 6 Cyl 3.3L
Smell burning oil and antifreeze. No oil on ground but sometimes a very small puddle of antifreeze.
Also have rattling sound which I was told might be water pump bearings.
Obtain a loan free radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly or PepBoys. Follow their instructions and pump it an adequate air pressure 12 -15 psi or the allowances on the radiator cap. Observe the leaks and perform the repair.