GMC/Chevy Light Truck: Central Port Fuel Injection Diagnosis
Back in 1992, General Motors introduced a new type of fuel injection system known as “Central Port Injection” (CPI), which GM also refers to as “Central Multi-point Fuel Injection” (CMFI). The system was used on 4.3L V6 Vortec engines through 1995, and was redesigned in 1996 and renamed “Central Sequential Fuel Injection” (CSFI). The system
Snap-on Classic 96 Tool Organization Solution Provides Strength, Lasting Value
The 24-inch deep, 72-inch wide Classic 96 (KRA2418) storage center from Snap-on Tools offers a mammoth 31,000 cubic inches of storage space. The unit’s 18 drawers can be configured to almost any specification, with 2-inch mounting centers located throughout the unit.
Tech Tip: Common Mistakes to Avoid when Resurfacing Cylinder Heads and Blocks
Cylinder heads and blocks may need to be resurfaced to restore flatness or to improve the surface finish, or milled to change the deck height for a variety of reasons. The deck surface on the head or block may need to be resurfaced if the surface isn’t smooth or flat. A head may need to be resurfaced after welds or other repairs have been made, or milled to increase the compression ratio.
Diagnostic Dilemmas: Symptom Diagnosis…The Journey Begins
When I first began my automotive career way back in 1957, the symptoms of an ailing engine were very apparent. A carburetor with a worn accelerator pump, for example, would characteristically stumble on acceleration and a closed-up set of distributor contact points would cause the engine to become very sluggish. Low fuel pressure caused by
Foreign Affairs: Getting Nissan Engines Back to Peak Performance
/Articles/06_01_2007/60754gif_00000014067.gif” width=”156″ height=”146″ alt=”” border=”0″ align=”right” /> In this article, we’ll take a look at some of the common problems that affect engine performance. With on-board diagnostics (OBD), many of these problems will cause a check engine lamp (CEL) and store a code. With most of us becoming comfortable and proficient while working with OBD
Technicians’ Top 5 Favorite Tools & Equipment
Roy Larson, president Beyer Motor Works Inc., BMW/Mercedes driveline experts Chandler, AZ www.beyerdriveline.com and www.beyermotorworks.com Member: BIMRS, Bimmer Tech Group, Mini Tech Group, BMW CCA, ASA, APRA, BBB My 5 favorite tools are: Streamlight Stylus Reach — This pocket flashlight puts the light where I need it, making it ideal to inspect brake pads and
Larger Vehicles are No Problem for New Rotary Four-Post Lifts
Rotary Lift introduces a new line of 14,000-lb. capacity four-post general service and alignment lifts which enable technicians to work on most light-duty vehicles. The new models replace the company’s 12,000-lb. four-post lifts.
Fuel Pump Manufacturers Council Tackles Fuel Pump Warranty Issues
Believe it or not, fuel pumps have a higher return rate than almost any other automotive part. According to the Fuel Pump Manufacturers Council (FPMC), about 10% of all the fuel pumps that are sold by jobber parts stores are returned. But it isn’t because there’s an epidemic of defective fuel pumps. FPMC members say that up to 80% or more of the returned pumps work fine when they are tested by the manufacturer.
Tire Tech: OEM Engineer Dispels (and Adds Fuel to) TPMS Myths
Myths are fine if you’re teaching mythology. However, they are a pain in the bay for the automotive aftermarket, especially when dealing with new components like tire pressure monitoring systems (TPMS). With every new technology, there are inherent learning, maintenance and problem-solving issues. Also, there are accompanying apprehensions and fears. Some concerns are valid; others would fall into the category of myths.
K-Line Industries Introduces All-In-One Driveability Tester
The AT3627 Automatic Transmission Tester from K-Line Industries, Inc. simultaneously monitors all pressure and vacuum conditions. Universal for both domestic and import vehicles, use it to correlate shift points with engine rpm and to diagnose vacuum-assist shifting problems in earlier transmission models.