Misfires In The Crankshaft And Camshaft
Any time you’re dealing with a combustion engine, there’s a chance it will develop a misfire. A better understanding of how computer systems analyze a misfire can make your job that much easier as the service tech.
Ultimate Underhood: Heated Air Intake
The heated air intake was used on many 1970s vehicles to reduce startup emissions on carbureted engines. The systems typically used a thermostat that would open a vacuum switch. The vacuum would act on a diaphragm of a vacuum pot that would pull shut a door to divert the intake air.
Recognizing And Preventing Engine Sludge
Engine repairs are one of the most expensive costs associated with car ownership. If the engine, transmission or body is shot, those repairs can easily overwhelm your customers’ budgets. Engine sludge is a key contributor to engine failure; here’s how to recognize and prevent the problem before it becomes an issue.
ASE A1 Task List: Gaskets
Passing the ASE A1 can be difficult. Do not go into this test with the notion that this is an exam for engine rebuilders. Many of the tasks in the A1 task list are required every day at general repair shops for top-end engine repairs.
VIDEO: Crankshaft Position Sensor Diagnosis
Andrew Markel goes over how crank and cam position sensors can fail or send codes due to corrosion, and what to watch for in the voltage before replacing them. Sponsored by Robert Bosch.
VIDEO: Three Tips To Replace Exhaust Manifold Gaskets
Andrew Markel explains how exhaust manifold gaskets on some engines can be difficult to work with. The video also offers some pro tips to make the job easier, including using anti-seize and induction heating. Sponsored by MAHLE.
Ultimate Underhood: Dry Sump Engine Oil Systems
On GM’s newer LT V8s, there is an option for a dry sump lubrication system. Dry sump oiling systems improve lubrication system performance during aggressive driving maneuvers and high cornering loads.
VIDEO: Understanding Modern Engine Intake, Water Pump And Thermostat Gaskets
Andrew Markel discusses new gasket designs and how they are used on modern engines. Sponsored by MAHLE.
GM Tech Tip: Torque-To-Yield TTY Fastener Use And Reuse
A fastener with a torque + angle specification must be tightened first to the torque part of the specification and then tightened further by the addition of the specified angle. The angle must be applied relative to the mating fastener.
Engine Gasket Guide: Are You Pairing The Gasket With The Correct Sealant And Surface?
There are endless combinations of engines, applications and gaskets on the market. But how do you match the gasket with the correct installation procedures? Here is a quick guide on how to match gaskets with the correct sealants and surface treatments.
Timing Chain Wear: Why Oil Quality Matters
Without proper timing of internal engine components, the engine will suffer a catastrophic failure. This is what happens when a timing chain or belt breaks.
VIDEO: Carbon Deposits On Direct Injection Engines
Jon Nelson explains why carbon deposits happen and how to diagnose misfires and clean intake valves.
