Q-I have a 1982 Audi 5000S with 113,000 miles and an engine oil leak. Every morning I find a puddle of oil under the car. One mechanic told me the oil is leaking from the air filter housing because of ...

If your vehicle has been running roughly or seems to be losing power, it's possible that there's a lack of pressure in one or more of the cylinders. Without enough pressure, the fuel/air mixture doesn ...

Horsepower and torque are all about cylinder pressure. Compression ratio, cam timing, cylinder head flow, and all the rest of the goodies that go into an engine aren't worth much if what enters the ...