Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Is the check engine light on when it's running and if it is do you know the code?Also, is it still overheating or no?
That would be common to get the smell, so the truck hasn't been overheating on you at this point except for that first time then.
If the light is on then I think it's possible you are having a misfire issue. Basically this could be from the antifreeze soaking the spark plug wires. You might have an arcing condition if the wires are older. Let me know what you find and we can go from there. I am glad to hear it's not overheating at this point. That was a real concern for me because it could point to a bad head gasket.
Let me know.