It is then pushed to the rectum which is the last part of the large intestine, then out the anus and into your toilet. The digestive system refers to the system from the mouth to the  bowels. It is the system that the body used to draw nutrients from  food and to eliminate waste.
1996 and newer vehicles CANNOT PASS emissions testing with the âCheck Engineâ light illuminated. Determining what has caused the âCheck Engineâ light to illuminate, and repairing the problem is a job for trained professionals equipped with the proper tools to diagnose and repair the problem.
Another symptom of a potential problem with the EGR vacuum modulator is a failed emissions test. Sometimes the EGR vacuum modulator can fail, and not set off the Check Engine Light. This will result in increased NOx emissions, which can cause the vehicle to fail an emissions test if the levels climb too high.