Misfires, knocking, volatility problems and other issues can occur due to lack of adequate fuel quality controls. RFG quality variations can result in different engine performance from one tankful to the next.
In order to maintain emissions compliance, Mercedes-Benz engineers have to control the temperature range the engine will operate in and develop engine management parameters within this range. This may sound simple enough, but how do you accomplish this when the car might sit for an hour of traffic on a hot summer day, or cruise at highway speeds in the dead of winter?
Now more than ever BMW owners are concerned about their fuel mileage as well as their impact on the environment. Part of BMW’s “Efficient Dynamics” movement is reducing emissions and still providing a vehicle that is a driver’s car. How are you going to keep your customers’ vehicles running efficiently?
EVAP codes are some of the most common causes of state emissions inspection failures. If you don’t have such a program in your area now, just wait. One is on the way. And a leak in the EVAP system is sometimes difficult to find. Here’s how to diagnose BMW’s versions.
In the March Import Service, we began a discussion of OBD-II evaporative emissions systems. We explained system operation and the problems engineers face when designing the monitoring devices for these systems. We also looked at the early Toyota evaporative emissions system and explained how the charcoal canister functions. This month we will continue with Toyota […]
