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.
Kidney problems, especially those in which kidney stones are present, will sometimes result the urine having quite a strong odor. Urinary Tract Infections-Another cause of smelly urine, particularly in women, is a urinary tract infection. Urinary tract infections (UTI) are quite common in women.Nearly half of all women experience UTI at one time or another.idney problems, especially those in which kidney stones are present, will sometimes result the urine having quite a strong odor. Urinary Tract Infections-Another cause of smelly urine, particularly in women, is a urinary tract infection. Urinary tract infections (UTI) are quite common in women.