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Archive Tag: tech tip

Maintenance and Service Intervals: The Key to Extending Engine Life

Maintenance and Service Intervals: The Key to Extending Engine Life

December 14, 2020

With proper maintenance and timely service intervals, the life of the engine and related components can be extended. Neglecting these service intervals can result in poor engine performance and internal engine damage due to the formation of sludge deposits. These deposits can restrict the flow of lubricant, promoting accelerated wear.

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ENGINE NOISES: Normal Characteristic or a Catastrophic Event

ENGINE NOISES: Normal Characteristic or a Catastrophic Event

October 26, 2020

Identifying noises that should be considered a normal characteristic or a mechanical defect can be a challenge, even for the most experienced technician. Some engines, systems and components come with their own noise characteristics that we would once consider a defect, but now are considered a normal characteristic. Some mechanical failures may not receive immediate […]

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BRAKES, TIRES AND WHEELS: Factory Solutions for Some Challenging Symptoms

BRAKES, TIRES AND WHEELS: Factory Solutions for Some Challenging Symptoms

July 29, 2020

Nothing can be more frustrating than spending countless hours trying to diagnose and resolve a customer’s complaint only to determine late in the diagnosis there was a factory bulletin available that would have quickly resolved the problem. In many cases, the material contained in the TSB, campaign or recall is the only solution, as the […]

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Diagnosing Engine Misfires: Would you have Considered Engine Coolant or Oil Leaks?

Diagnosing Engine Misfires: Would you have Considered Engine Coolant or Oil Leaks?

June 9, 2020

When diagnosing a misfire condition most automatically assume an ignition or fuel related condition as the culprit. This would involve a defective spark plug, ignition wire, ignition coil, fuel injector, etc. While these components are the most likely candidates that would result in a misfire, some other conditions must also be considered with today’s engines […]

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Making An Accurate Diagnosis: Always Start with the Basic Checks First

Making An Accurate Diagnosis: Always Start with the Basic Checks First

April 30, 2020

New technology poses new challenges. Many of these challenges require more than the information provided in repair manuals or diagnostic code charts. Much is learned once the vehicle is put into service and into real world vehicle operating conditions. Following are some conditions that can promote difficult to diagnose symptoms.

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Fuel Facts: Troubleshooting Rough Idle, Surging, Stalling, Hard Starts and Noises

Fuel Facts: Troubleshooting Rough Idle, Surging, Stalling, Hard Starts and Noises

April 30, 2020

Determining if the performance symptom is due to the vapor pressure of the fuel, carbon buildup, or sticking valves due to gum and varnish can be a challenge.

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Vehicle Modifications: They Can Create Diagnostic Challenges

Vehicle Modifications: They Can Create Diagnostic Challenges

May 23, 2019

Vehicle modifications can create some interesting challenges for a technician. The first step in the diagnostic process is a discussion with the vehicle owner, and if possible, have them accompany you on a road test. Always perform the basic diagnostic steps first. Determine if any modifications have been made to the vehicle. With today’s technology […]

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GM’S Active Fuel Management: Camshaft and Valve Lifter Failures

GM’S Active Fuel Management: Camshaft and Valve Lifter Failures

April 23, 2019

GM’s Active Fuel Management (AFM) system allows a V8 engine to turn off half of its cylinders for fuel economy purposes. In doing so the V8 engines RPO: L76, L77, L83, L86, L94, L99, LC9, LFA, LH6, LMG, LS4, LT1, LT4, LY5 and LV3 are developing a history of camshafts and valve lifters being turned […]

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Changes in Engine Lubrication: Prompts Changes in Filtration Technology

Changes in Engine Lubrication: Prompts Changes in Filtration Technology

November 30, 2018

Today’s automotive engines have different filtration and lubrication requirements compared to engines produced in the past. Bearing clearances and the composition of the metal used in the bearings, plus changes in engine technology require different lubrication and filtration characteristics. Some assume that any viscosity oil will do and filtration efficiency s determined by the physical characteristics/dimensions of […]

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Electrical Challenges: A Battery of Facts Must Be Considered

Electrical Challenges: A Battery of Facts Must Be Considered

November 30, 2018

Most vehicle owners think of the battery as a component that starts the engine and serves no other purpose. And most never think about the battery or consider having it tested until the engine fails to start. With today’s vehicles, the battery may start the engine perfectly right up until it fails to start without […]

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