Tech Tips

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

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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Brake Solutions: Service Tips for the Brake Technician

August 15, 2019

The owner of the 2013 Ford F150 encountered a brake performance issue, which involved a pulling condition during brake application. The vehicle was a recent purchase with little maintenance history from the previous owner, other than an invoice in the glove compartment that reflected a recent disc pad replacement…

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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

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

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

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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Chevrolet Colorado and GMC Canyon: The Challenge of an Oil Filter Replacement

April 25, 2018

Changing the oil filter on a 2017-2018 Chevrolet Colorado or GMC Canyon with a 3.6L engine can be a challenging event, often leading to engine failure. These are not applications to hurriedly perform a lube service on. If extreme caution is not taken the customer may be without transportation for a few days until a […]

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A Diagnostic Challenge: The Symptoms May Be a Normal Characteristic

April 25, 2018

Often we are faced with customer complaints that are seemingly impossible to resolve. We methodically make our best diagnostic efforts and implement the necessary repairs to alleviate the customer’s complaint. Sometimes, our best efforts fail to provide a solution and when this happens, it looks bad on the technician and the parts supplier.

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Carbon and Gum Deposits: Their Effect on Engine Performance

November 28, 2017

On one vehicle the customer complaint started with a misfire condition which progressed to an extended crank time to start and eventually a no-start symptom. Performing the basic checks revealed…

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