Spark Plugs Archives - Page 2 of 14 - UnderhoodService
The Importance of Proper Spark Plug Torqueing

Whenever you install new spark plugs in your vehicle’s engine, there are some crucial considerations to keep in mind. For those who have installed plugs before, proper plug gapping usually comes to mind first. But another important factor in getting the most out of a new set of spark plugs is to precisely torque them

The Do’s and Don’ts of Installing Spark Plugs

This article discusses the “conscious” steps you should perform during spark plug replacement.

Making Sure You Get A Strong Spark (Video)

Complete combustion requires strong spark at the right time with the right compression. Sponsored by AP Emissions.

E-15 Summer Blend Fuels Shouldn’t Make A Difference (VIDEO)

Summer blend fuels may seem different to some consumers, but any effects they have are negligible. Sponsored by Autolite.

Spark Plug Replacement Intervals (VIDEO)

Be wary of spark plugs as they approach the end of their lifespan. This video is sponsored by Autolite.

Spark Plug Removal Techniques On Ford Modular Engines

Ford’s Modular engine has been known to give techs a hard time during a spark plug replacement. 

How Gapping Impacts Iridium Spark Plug Performance

Anyone installing new spark plugs needs to be mindful of the right gap for successful ignition and optimal performance. This gap, or the proper distance between the center and ground electrodes, can be found in each vehicle’s service manual. One of the main reasons to take extra care in this area is that spark plug

Ignition And Coil Flashover

If you see carbon tracking or “flash over” on a spark plug, boot or coil, it is not normal.

Ignition Diagnostics

This part of the cycle is when the mixture of air and fuel ignites and how the flame front spreads in the cylinder.

Selecting The Correct ACDelco Spark Plug (VIDEO)

ACDelco plugs feature advanced suppressor designs that prevent flashover & leaks of combustion gases. Sponsored by ACDelco.

Spark Plug Analysis Paralysis

Making sure to pick the correct replacement plug is crucial, but so is understanding them.

VIDEO: How Much Energy Does It Take To Fire A Coil?

The condition of a spark plug can tell you a lot. This video is sponsored by Standard Motor Products.