Service Bulletins
Posted in Ignition, Sensors, Diagnostics, Engine Performance
Certain Nissan models between model years 1996-2004 will set a trouble code for their oxygen sensors falsely. This article will guide you through the steps to diagnose and repair these vehicles.
Posted in Ignition, Diagnostics, Engine Performance, Evaporative Emission Control System (EVAP)
This article will provide information you need to know when you choose the E85 gas pump.Can E85 fuel help in certain high performance application? Can you damage a motor if you choose E85 for the wrong motor application? Read on to learn more on this subject.
Posted in Diagnostics, Engine Performance, Starting/Charging, Accessories
What is a fuel pump driver module and what you need to know when replacing this device.
Posted in Heating, Ventilation and Air Conditioning (HVAC), Accessories
This bulletin describes common blower motor resistor failures including inspection and testing to ensure proper operation.
Posted in Ignition, Engine Performance
The surface discharge spark plug is used in marine and extreme high performance street/strip applications. This article will explain the firing path of the spark when discharged.
Posted in Ignition, Engine Performance
Many modern engine applications use high cylinder compression or pressure to produce power and economy. Choosing the right spark plug is critical for optimum engine performance and spark plug longevity.
Posted in Ignition, Diagnostics, Engine Performance
Spark plug resistor caps are required in some engine applications where a spark plug lacks the required internal resistance value. Choosing the correct cap and installing the cap correctly is critical to ensure operation and long life durability.
Posted in Ignition, Engine Performance
Spark plug application charts show a gap settings for these spark plugs but provide no information to do the check. This article provides insight on these spark plugs and the gap specification.
Posted in Accessories, Electrical, Lighting and Accessories
Many automotive relays appear similar in size and terminal layout but that doesn't mean they are the same. This article will provide knowledge to understand when changing or choosing a relay.
Posted in Ignition, Diagnostics, Engine Performance
This bulletin will explain the difference in the air gap setting and main gap setting on hybrid type ground electrode spark plugs, the reason for them, and how to safely check these settings when necessary.
Posted in Ignition, Sensors, Diagnostics, Engine Performance, Starting/Charging
Installing a new position sensor may require additional steps to complete the job. Follow the vehicle manufactures suggested procedure following that sensor replacement to prevent other problems.
Posted in Ignition, Engine Performance
This article will provide a basic understanding of the NGK Spark Plugs heat range layout.
Posted in Ignition, Diagnostics, Engine Performance
Spark plug air gap is a critical measurement when peak performance is required of a spark plug. This article provides information to check and adjust the gap correctly on a single ground terminal spark plug.
Posted in Ignition, Diagnostics, Engine Performance, Starting/Charging
This article provides an understanding of the operation of a waste spark ignition system
Posted in Sensors, Diagnostics, Engine Performance
Replacing an oxygen sensor can come with challenges. This article will provide a few tips to possibly make the job a bit easier to handle.
Posted in Ignition, Diagnostics, Engine Performance
Understanding spark plug failure is critical to effective diagnosis.This article provides information on another type of failure, external flash over.
Posted in Ignition, Sensors, Diagnostics, Anti-Lock Braking Systems (ABS), Engine Performance, Evaporative Emission Control System (EVAP)
This article will provide a brief overview of the malfunction indicator lamp operation in our modern vehicle applications
Posted in Ignition, Diagnostics, Engine Performance
This article provides a general overview of the variable valve timing system operation as well as guidance to properly maintain the system to keep it functioning normally.
Posted in Sensors, Diagnostics, Engine Performance
Trouble code diagnosis does not always lead to part replacement. Researching the vehicle manufactures technical service bulletins may lead to a repair requiring just a computer reprogram. This article will provide knowledge on service bulletins along with some oxygen sensor knowledge.
Posted in Ignition, Diagnostics, Engine Performance
Spark plug projection will provide improved ignitability and performance but can also cause engine damage if used incorrectly.
Posted in Sensors, Diagnostics, Engine Performance, Accessories
WVE has designed throttle position sensors with improved circuit technology which will improve the sensors durability and life cycle. But, with technology our test methods need to update with this improvement. This article will provide the knowledge and skills needed.
Posted in Ignition, Diagnostics, Engine Performance
The air gap is preset at the factory but questions always arise if the gap is correct. This article illustrates the correct method to verify gap setting.
Posted in Ignition, Diagnostics, Engine Performance, Starting/Charging
When boost pressure exceeds the limits of what a spark plug can physically withstand, damage will occur. This article provides visual affects of excessive cylinder pressure.
Posted in Ignition, Sensors, Diagnostics, Anti-Lock Braking Systems (ABS), Engine Performance, Heating, Ventilation and Air Conditioning (HVAC), Starting/Charging, Accessories, Electrical, Lighting and Accessories
Many trouble codes and electrical problems may lead to the replacement of an electrical connector. This article will guide you through the proper replacement procedure of those electrical connectors.
Posted in Sensors
Replacing a threaded sensor requires an understanding of the thread types used and how to install them without causing other damage. This article provides needed information before replacing a threaded sensor.
Posted in Sensors, Anti-Lock Braking Systems (ABS), Accessories, Electrical, Lighting and Accessories
When replacing a brake light switch or brake pedal position sensor there may be certain rules you must follow to adjust correctly after installation. This article will discuss a Chrysler switch application that can be quite confusing.
Posted in Ignition, Diagnostics, Engine Performance
Understanding spark plug failure is critical to effective diagnosis. This article provides guidance on one failure mode of a spark plug, internal arc over.
Posted in Ignition, Engine Performance
There are four common type spark plug secondary terminal configurations. This article will outline each terminal type.
Posted in Ignition, Diagnostics, Engine Performance
Spark plug resistance plays a very important part of an ignition system. Understand why you should choose a resisted spark plug for your application.
Posted in Ignition, Diagnostics, Engine Performance, Accessories
Engine high performance enthusiasts are often searching for "shorty" spark plugs to solve a spark plug wire boot to exhaust header clearance issue. This article will provide information in understanding the availability of these spark plugs.
