Tech Feature: Tips for Servicing Performance Carburetors Carburetors have been around forever, and are still the dominant fuel mixer for most circle track, drag racing and street performance muscle cars. More

Tech Tip: Checking Fuel Pressure Fuel pressure can be checked by attaching a gauge to the Schrader valve fitting on the fuel injector rail, or by teeing the gauge into the fuel supply line if the fuel system lacks a test fitting. More

Electronics Diagnosis: Toyota Models Find out the latest innovations in scan tool technology, and what your scan tool should be doing for you. More

Cylinder Head Gasket Service Essentials Cylinder head gasket design has become more sophisticated than in years past. Critical steps must be taken during the repair process to ensure ­customer satisfaction and avoid time-consuming­ ­comebacks. More

Performance Mods That Pack a Punch A project car in the form of a WRX/STI shows that Z Sport in Everett, WA, is all about ­balancing ultimate performance within legal parameters and practicality. See what performance modifications the shop has completed with that goal in mind. More

Tech Feature: Valve Seat Selection and Machining The type of seat material that's "best" for a particular cylinder head will depend on the application, fuel used, how much power, type of valves, and longevity and durability the engine is expected to deliver. More

Tech Feature: Special Tools for Steering and Suspension Work Steering and suspension work, like engine repair or electrical diagnosis, often requires special tools for certain jobs. More

Tech Update: The Keys to Success with TPMS There are many factors to consider with a low tire pressure situation, not the least of which is safety. Underinflated tires roll at higher temperatures, handle poorly and require longer vehicle stopping distances. Underinflated tires also reduce gas mileage. More

Carley's Corner: Modules Are Taking Over The average new car today has up to 80 or more modules that control more than 1,000 different functions - everything from powertrain management, anti-lock brakes, stability control, electronic suspension and airbag deployment to power windows, power seats, climate control, infotainment and navigation. More

Tech Tip: Hyundai Sonata Runs/Idles Rough/ DTC P0335 Set/MIL ON This TSB has been revised to add a procedure to index the oil pump/balance shaft sprocket. Not properly indexing the sprocket may cause an engine vibration mostly noticed at 3,500-4,000 rpm. More