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A well-kept shop builds good PR

A well-kept shop builds good PR

As I sat in front of my monitor trying to decide what to write for this editorial, I thought back on how I’d spent the previous Sunday, tidying up my engine assembly room and preparing for another engine build. Luckily, I have a full-wall-length Lista workbench and cabinet system that allows me to neatly organize all of my tools and supplies.

Article

The dreaded engine surge

A crankshaft position sensor features a permanent magnet and generates an AC signal as the...

In this article, we'll discuss engine idle issues, surging and "hunting" problems. First let's cover the "basics" in terms of the possible causes of engine surging/hunting, where engine speed suddenly (or slowly) changes.

Article

Coolant and colors: What are car makers up to?

Here it comes, but is it orange or pink? Identifying the proper coolant by color can sometime be...

Confusion continues over coolant colors for cars. Of course, there is still the good old green stuff, but there is also orange, yellow (gold and amber), red, pink, blue and, if you mix the wrong things together, brown.

Article

Tool Review: the Phoenix Systems Injector

Phoenix Systems’ Phoenix V12 Pro kit is a budget-minded bleed system but designed for...

As we all know, there are a number of ways to bleed air from a hydraulic system, none of which are any fun. However, the one-man Phoenix Injector makes the task less of a challenge. While they offer several versions (Power-Ject; Maxi-Ject Pro; V20; and V12, in both pro and DIY versions), the specific kit we reviewed was the V12 Professional model.

Article

Vacuum, exhaust and fluid leak detection

The Smoke Wizard GLD-40 provides leak detection for a variety of systems including full EVAP...

In any service shop, a smoke machine is a great investment because of the variety of systems that it can be used to test. The use of smoke machines has proven to be an effective way to locate vacuum, exhaust, gas, oil and coolant leaks.

Article

Easy air-fuel and oxygen sensor diagnosis

Easy air-fuel and oxygen sensor diagnosis

Some technicians who have worked in this business for years often still get confused by how to diagnose an air-fuel sensor or are not sure what to look at when diagnosing a rear oxygen sensor. In fact, when I started in this business (which is not that long ago) I was told that there is no way to diagnose an air-fuel sensor with a high level of certainty. Let me set the record straight: there are several ways that you can diagnose any air-fuel or oxygen sensor and be confident that you will be doing the right repair.

Article

A/C service advancements

HVAC system development today involves much more than simply achieving hot or cold air....

The advent of computer controls, and especially with the 2000 introduction of CAN (controller area network), has changed much of the way we service automobiles. The heating/ventilation/air conditioning (HVAC) system is no exception.

Article

Wheel alignment tech

Today’s electronic wheel alignment systems offer precision and ease of use, including such...

There’s more to wheel alignment than following the prompts that appear on a computerized alignment machine. While today’s very helpful wheel alignment systems make it easier and faster to achieve “factory” alignment, it’s important to gain a basic understanding of the terms and geometry involved in wheel angles and the results of angle adjustment.

Article

Torque values and threaded fastener clamping loads: Part I: From clamping loads to tightening steps

Torque values and threaded fastener clamping loads: Part I: From clamping loads to tightening steps

In a manner of speaking, bolts can be compared to rubber bands. Once the underside of the bolt head makes contact with the parent surface, the head can’t enter the threaded hole, so additional rotation of the bolt head causes the bolt shank of a high-tension bolt to begin to stretch. The objective is to reach the ideal point where this stretch provides the needed clamping force to properly secure the component being installed.