Tech Tip: Water Pumps – Why They Fail and When to Replace Them
If you’ve wondered how much work a water pump must do, remember that only about 30 percent of the heat energy produced by combustion results in mechanical energy. That estimate, of course, is a mathematical comparison between the heat value of the gasoline going into the engine, and the heat value of the mechanical energy coming out of the engine. The remainder of combustion heat must then be dissipated into the atmosphere through the exhaust, lubrication and cooling systems.
Selling Services: Selling the Scope to Your Customer
While replacing a blown head gasket and re-torquing the head bolts, you reach into your tool box and grab your 1/2-inch impact and rattle the bolts down. Just kidding! You would reach for your torque wrench and accurately follow the manufacturer recommendations for torque patterns and values. To guarantee a quality repair, an accurate torque
Timing Belt Replacement: Safeguarding Your Customers’ Vehicles From Major Engine Damage
Although better materials and manufacturing technology have extended the timing belt replacement intervals on many nameplates, timing belt replacements remain one of the most profitable scheduled maintenance services. They continue to be profitable because many other scheduled services like spark plug replacements, filter replacements, coolant changes and transmission fluid changes can be packaged with a
Component Connection: Water Pumps…Why They Fail and When to Replace Them
If you’ve wondered how much work a water pump must do, remember that only about 30% of the heat energy produced by combustion results in mechanical energy. That estimate, of course, is a mathematical comparison between the heat value of the gasoline going into the engine, and the heat value of the mechanical energy coming
Cold Engine Stumble/DTC P0116/MIL ON
Some 2000-2002 Hyundai Accents with 1.5L SOHC and 1.6L DOHC engines may experience the following symptoms in hot and humid weather: Slower than usual acceleration after an initial cold start (engine is cold soaked). Greater than usual rpm drop when engaging drive or reverse (on ATM-equipped vehicles) after an initial cold start. Some 2002 1.6L
Tech Tip: Servicing 1998-1999 Passats Experiencing Delayed Shifts During Cold Start Warm-Up
Some 1998-’99 Passat 2.8L models with 01V transmissions may exhibit delayed upshifts under partial load after a cold start.
Tech Tip: Basic Cylinder Head Gasket Installation Tips
For a successful repair, the cylinder head gasket must seal fuel, air, vacuum, hot pressurized combustion gases, coolant, as well as high and low pressure oil. The following tips will help ensure that a quality repair is made.
Mileage Maintenance
A mere 0.7 of a mile does not sound like much, it is about 3,700 feet, or less than one-third the distance around Daytona International Speedway. On average, the U.S. population of vehicles will get 20 miles per gallon (including light trucks and passenger vehicles). A 0.7 of a mile improvement represents only a 3.5
4WD Clutch Replacement
Here in the upper part of the West Coast, four-wheeling is a very large part of outdoor recreation. Vehicles of all kinds are taken to the forests and mountains every weekend. There are miles and miles of off-road trails, and organized clubs are available for every make, model and size of 4WD vehicle. Toyota trucks
Diagnostic Solutions: Air Flow Sensors…Understanding Their Function & Potential Problems
Most of us remember the “good old days” when an engine’s air/fuel (a/f) ratio was controlled by a mechanically operated carburetor. Due to the inherent design limitations of mechanical systems, however, carburetors don’t respond efficiently to changes in barometric pressure, temperature and humidity. In the quest for improved fuel economy and reduced exhaust emissions, import