I have 37k on my o3 HD 2500 4x4. It smells when I come to a stop. I have had 2 friends who say it is the Injector Pump leaking. They both had theirs replaced by the dealer at 34k & 36k. Is there a problem with the injector pumps ????

if your injectors are leaking your engine will run hot and your gas mileage will go down.