Hobes, to get rid of this karma, after your next hunting trip, preferably one where you are covered in blood, take the rifle into your nearest police station and hand it in. As you walk in, start waving it around to attract some attention, and screaming about chinamen and bad karma. When you wake up from being tasered, you will probably have messed your pants, and Bubba might be standing over you. But you can be rest assured that the bad karma has now been transferred to the nice police man.

That way, your truck will run on veg forever with no problems.