The fuel supply system of any vehicle must be designed to deliver an adequate volume of fuel at the correct pressure to the carburetor(s) or fuel injectors during every operating condition at which the engine will be ever operated. If all this isn’t handled properly, the air/fuel mixture will shift lean or rich and cause performance to suffer.
A no-start on a good customer’s E46 looked like it was due to a fuel-supply problem, but automatically installing a pump would have been a dereliction of diagnostic duty.
The life span of the gasoline you buy at your local station can range from several months to a couple years from the day it was refined depending on how it was stored.
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?
Mercedes-Benz’s pursuit of safer vehicles incorporates individual systems working in concert to control speed, handling, and stopping. One critical part of this is the Electronic Accelerator. Here’s how it works and how to fix it.
Automobile emissions are a hot topic among environmentalists, drivers and technicians. Mercedes-Benz vehicles utilize emissions systems, such as Exhaust Gas Recirculation, to reduce harmful pollutants.
One of the first tests that should be performed during a no-start or drivability diagnosis is for proper fuel pressure. But there’s more than just pressure to think about.
