From Wikipedia, the free encyclopedia. Acute exacerbation of COPD also known as acute exacerbations of chronic bronchitis (AECB) is a sudden worsening of COPD symptoms (shortness of breath, quantity and color of phlegm) that typically lasts for several days.It may be triggered by an infection with bacteria or viruses or by environmental pollutants.hortness of breath and wheezing are present in many cases. Exacerbations may be accompanied by increased amount of cough and sputum productions, and a change in appearance of sputum. An abrupt worsening in COPD symptoms may cause rupture of the airways in the lungs, which in turn may cause a spontaneous pneumothorax.
Confidence votes 262K. To reset the fuel filter warning light off for the Toyota hilux one must replace the filter that switch the car on and off. They must also click the rest button.
Park the 1991 Toyota truck in a ventilated area. Open the hood and secure it in place. Walk to the rear of the truck and remove the gas cap. This process will relieve the gas pressure off the fuel filter so that gas does not spray everywhere.Locate the fuel filter on the passenger side of the engine on the inside of the lower passenger-side frame rail.The fuel filter will have a screw-on fuel line coming out of each end. Slide the drip pan under the truck in the general area of the fuel filter.ark the 1991 Toyota truck in a ventilated area. Open the hood and secure it in place. Walk to the rear of the truck and remove the gas cap. This process will relieve the gas pressure off the fuel filter so that gas does not spray everywhere.