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6/7/2013 Motor Oil Fact or Fiction There are a lot of rumors about motor oil out there. But which stories are true and which are simply myths? This article will tackle four of the most common oil anecdotes and explain whether each is f... 6/6/2013 Chrysler 3.7L Throttle Body 'Whistle-Like Sounds' Whistling sounds have been reported coming from some 2007 Chrysler 3.7L engines. The intake-to-throttle-body joint may be the cause of the “whistle-like” sound. 6/6/2013 Destroking or Decompressing Pistons A destroked piston is a piston that may have as much as .020˝ or more removed from the top of the piston. This may be done by machining the top of the piston, or reducing the thickness of the head in ... 6/6/2013 Engine Whine Sounds at Idle Reported on Some Chrysler 6.1L Engines This bulletin describes procedures for diagnosing the whine sound, and if necessary, recommending an oil viscosity change with addition of an oil viscosity label attached to the engine cover. 5/30/2013 Dirt and Debris Accumulating at Rear Main Seal on 1997-2005 Jeep 4.0L Engines This bulletin may be helpful for engine builder customers/installers who complain of a small oil leak around the rear main seal. 5/30/2013 Oil Leak From Front Timing Cover Reported on Some 2005-2006 Toyota 2GR-FE Engines Customers may complain that some 2005 - 2006 model year Toyota vehicles equipped with the 2GR-FE engine display evidence of a small oil leak, located where the Bank 1 cylinder head, engine block and t... 5/30/2013 Why Replace Oil Pump Intermediate Shafts? By the time an engine needs a new oil pump it has had considerable wear. The cylinder walls, rings, cam and lifters all wear. 5/23/2013 Audi/Volkswagen 1.8L DOHC Gasoline Engine Valve Failure Caution Market information indicates there are a growing number of valve failures being reported on the Audi/VW 1.8L DOHC 20 Valve gasoline engines after rebuild. 5/23/2013 Advantages of Using an Aluminum Flywheel The chief advantage of an aluminum high performance flywheel is the weight savings. Aluminum is one of the lightest materials available for flywheel manufacturing and therefore offers advantages. 5/22/2013 Engine Builder Shop Solutions: May 2013 Authors of Shop Solutions published in each issue of Engine Builder Magazine are awarded a prepaid $100 Visa gift card. 5/15/2013 Ford 7.3L Power Stroke Diesel Injector Removal and Installation These instructions are for Ford 7.3L V8 Diesel Turbo applications. You or your installer customers may need to refer to the service manual for more specific instructions. 5/15/2013 Phaser-Style Variable Valve Timing System Controls and Operation Different versions of VVT technology exist, including the ability to switch camshaft lobes within the rpm band to offer valve lift, duration and timing numbers to suit varying operational needs. 5/14/2013 A New 'Finish' in Honing Plateau hone, soft hone, whisker hone and ultra-finish hone. Confused? Don't feel bad... there are many machinists out there who are uncertain about this new honing method. In fact, it's one of the mo... 5/9/2013 Common Causes of Water Pump Failure Here are some helpful pointers you can pass along to your installer customers for any issues they may have with water pump failure. 5/9/2013 Oil Seepage from Cylinder Head on BMW E36 with M42 Engine Oil seepage may occur from the left side of the cylinder head at the lower mounting bolt for the intake manifold support bracket due to a casting shrinkage issue. 5/9/2013 Spiral-Reamed Valve Guide Misconceptions There has been some confusion about the function of the threaded portion of the inside diameter of certain spiral reamed valve guides. 5/1/2013 Audi 2.8L V6 Rear Crankshaft Seal Leaks After Replacement Oil may leak from the rear crankshaft seal after seal replacement due to the seal lip rolling while installing the new seal. 5/1/2013 Checking Compression Ring Gaps Ring gaps are often a confusing and misunderstood part of a rering job. There are MINIMUM and MAXIMUM ring gap specifications that must be observed for the best performance of a new ring set. 4/30/2013 Engine Builder Shop Solutions: April 2013 Authors of Shop Solutions published in each issue of Engine Builder Magazine are awarded a prepaid $100 Visa gift card. 4/18/2013 Why Do Mass Air Flow (MAF) Sensors Fail? Contamination is a key reason why MAF sensors fail and require replacement. As air, dirt and other debris get into the sensor, the parts become contaminated and fail. 4/17/2013 Hydraulic Lash Adjuster Noise on 1990-93 Mazda 1.6L DOHC There have been reports of a noise from the top of some 1990-’93 Mazda 1.6L DOHC engines that occur several times faster than crankshaft rotation. 4/17/2013 Measuring Valve Spring Retainer Height To achieve the proper valve spring height while using the minimum amount of valve spring shims can be challenging when working with applications that use other than stock components. 4/11/2013 Coolant Leak from Front Right Side of BMW M52TU Cylinder Head Cylinder heads with a machining flaw (hair line crack) may have been installed on M52TU engines in production on a limited number of vehicles. 4/11/2013 Revised Cylinder Head Bolt and Torque Procedures for 88-95 Ford 5.0L Engines In 1992, the type of cylinder head bolts used on the 5.0L engines was changed to Torque-To-Yield bolts (TTY). Depending on the build date of the engine, the 1992 model year engines came with either TT... 4/11/2013 Selecting the Correct Filter to Prevent Lean-Out and Pump Failure You may run any brand of filter you choose, just be certain that any filter installed meets the requirements specified by the fuel pump manufacturer.

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