Defective ignition coil(s) Bad spark plug(s), spark plug wires, or spark plug boots. Faulty fuel injector(s) Malfunctioning fuel delivery system (fuel pump, fuel pump relay, fuel injectors, or fuel filter) Major engine vacuum leak. EGR valve stuck in the wide open position. Clogged EGR ports.
The following conditions can sometimes cause smelly urine, but they are uncommon: 1  urinary stones â these may cause an ammonia-like odour (read about bladder stones and kidney stones) 2  a bladder fistula â this is an abnormal connection between your intestines and bladder.
Urine Odor Causes. A foul urine odor can be caused due to several factors ranging from dehydration, urinary tract infection, consumption of certain food to prolonged use of certain medications. The following write-up elucidates on some of the underlying causes of foul-smelling urine.Advertisement. Drinking cranberry juice and garlic juice can also help, if the underlying cause is urinary tract infection. Â» You can prepare another effective home remedy by boiling about two spoons of cumin seeds in four to five liters of water. Drinking this water will help to eliminate foul smell of urine.