Spark Plugs Archives - Page 4 of 14 - UnderhoodService
Gapping Spark Plugs

For modern fine-wire spark plugs, you should not measure the gap unless instructed by the manufacturer.

Pulstar Introduces Fine-Wire Iridium, High-Power Spark Plug

New line of spark plugs harnesses plasma technology to deliver more benefits.

VIDEO: Spark Plug Electrode Wear And The Shape Of The Tip

We discuss how wear due to plasma erosion can change firing voltages. This video is sponsored by Autolite.

VIDEO: Checking For Spark Inside And Outside The Engine

In this video we discuss what it takes to fire a spark plug under pressure. This video is sponsored by Autolite.

VIDEO: What Keeps Spark Plugs In The Head?

Here’s everything you need to know when tightening a spark plug. This video is sponsored by Autolite.

How Ignition Coils And Plugs Find The Path Of Least Resistance

No matter if it is the secondary or primary side of the coil, inspecting the grounds should be one of the first tests.

Secondary Ignition Waveforms and Spark Plug Performance

There are at least 500 components in the modern car engine.

How Iridium Spark Plugs Have Evolved with Engine Technology

True iridium alloy spark plugs are the experts’ choice when replacing their spark plugs to meet or exceed OE specifications for performance in late-model engines.

VIDEO: Spark Plug Mistakes And Recovery

What sets a part a professional technician from an amateur? This video is sponsored by Autolite.

VIDEO: Should You Use Anti-Seize On Spark Plugs?

Anti-seize can alter the tightening torque up to 20%, increasing the risk of breakage. This video is sponsored by Autolite.

VIDEO: Ignition Coil Secondary Ignition Waveforms

Watch this week’s garage video on the “burn line” of a secondary ignition waveform. This video is sponsored by Autolite.

VIDEO: Can You Replace Spark Plugs On A Hot Engine?

Installing a spark plug with the engine hot can change the torque specification. This video is sponsored by Autolite.