Weight loss happens fast after gastric sleeve surgery: 1  Month 3: About 1/3 of excess weight is gone. 2  Month 6: About half of excess weight is gone.  Month 12: Up to 70% of excess weight is gone.
Allow your engine to cool for 3 to 4 hours before changing your spark plugs. They can be extremely hot if you do not allow enough cooling time. On most vehicles, you should replace your spark plug wires at the same time as your spark plugs.
Detailed Topics. When Do Spark Plugs Need To Be Replaced. Spark plugs come in an abundance of designs. Many claims used in selling spark plugs are vastly overstated or false. Very sound reasons also exist, why spark plugs should be replaced. Many reasons for replacement are not common knowledge.