BMW has extended the warranty on the high-pressure fuel pump for the 2012 X5 M and X6 M models with the S63 engine. The warranty covers the pump for 10 years or 120,000 miles. BMW is not recalling the pump and no reason was given for the extension of the warranty.
Fasteners act much the same as a spring due to the physics of stretch and rebound.
While the design and use of automotive fasteners may seem simple, proper installation actually involves many different factors. There are many nuances in the selection and application of fasteners that can make the difference between a well-built engine and a candidate for self-destruction.
The first thing to understand is that fasteners act much the same as a spring due to the physics of stretch and rebound. A stud or bolt must be stretched to produce clamping force. For example, a typical 3/8˝ connecting rod bolt will need to be stretched some .006˝ to provide 10,000 lbs. of force.
Customers generally look to superchargers for the instant throttle response, not fuel economy.
Variable-length intake runners change the length of the intake passages depending on engine speed and load.
Before removing the driveshaft, check for play in the yoke and slip joint. If the u-joints are failing, you should be able to see movement in the shaft as you apply leverage.
Doug Kaufman discusses some simple things your customers can do to ensure the longest life of their turbochargers. Sponsored by MAHLE.
Diagnosing the problem comes down to understanding what causes a loss of fuel pressure.
Follow the correct repair procedures for a high-pressure fuel pump that is making a chirp.
A high-pressure direct injection fuel pump can vary the pressure to the injectors. Sponsored by Carter Fuel Systems.
The measurement of voltage is like the speed of the traffic.
