AutoTools blog
Long-form, practical articles on maintenance, diagnostics, tires, brakes, fuel economy and buying a used car — written for people who work with their hands.
How to Keep Your Car Safe When Parking Overnight
Most cars are stolen at night, and most of those thefts are crimes of opportunity, not master criminals outsmarting an alarm. A door left unlocked, a key fob hanging by the front door, a bag visible on the passenger seat: that is what gets a car taken.
Read the article →What Thieves Look for Before Breaking Into a Car
Most car thefts are not spontaneous. A thief walks or drives past your car first, checks a short list of easy signals, and decides in seconds whether it is worth the risk. This article breaks down what that list looks like, why certain cars get picked over others, and the practical steps that actua…
Read the article →25 Amazing Car Features Hidden in Plain Sight That Will Surprise You
Most cars carry a stack of clever features the owner never touches. The manual is 400 pages, nobody reads it, and the salesperson only had twenty minutes. This guide walks you through 25 of those features, one at a time, with what to do, why it matters and a tip that saves you the trial and error.
Read the article →Gasoline Engine Systems: From Carburetor to Fuel Injection
Your car either has a carburetor or fuel injection, and the difference explains a lot about how it starts, idles, and drinks gas. Maybe you just bought an old truck with a carb under the hood and you are not sure what you are looking at. Or your modern car is running rough and someone told you it i…
Read the article →Understanding Gasoline Engine Combustion and Air-Fuel Ratio
Your check engine light came on, the car feels gutless, and someone told you it's "running lean." Or maybe you're just curious why your fuel economy dropped two miles per gallon this month. Either way, you've landed on the right question: how does gasoline actually burn inside your engine, and what…
Read the article →Gasoline Engine: Ignition, Fuel System and Air-Fuel Mixture
Your car cranks fine but won't catch. Or it starts, then stumbles and shakes at idle. Or the check engine light came on and the scan tool says something about a lean condition. Whatever brought you here, you're probably wondering the same thing: is this an ignition problem, a fuel problem, or an ai…
Read the article →Gasoline Engine: Fundamentals and Operation
You do not need to be an engineer to understand what is happening under your hood. After reading this, you will know the four-stroke cycle well enough to explain it to a friend, understand why your engine needs spark, fuel, air, and compression to run, and be able to diagnose a rough idle or a no-s…
Read the article →How to Choose Automotive Tools: Sizes, Types, Uses & Buying Tips
You can walk into any parts store, look at three shelves of chrome, and still have no idea what you actually need. That is normal. Most tool advice either assumes you already own a shop or sells you a 300-piece kit you will use twice.
Read the article →12 Simple Ways to Make Your Car Harder to Steal
Your car is probably the second most expensive thing you own, and most people protect it with nothing more than a factory alarm and hope. That is a bad trade. A professional thief can be gone in under a minute, and the stuff you left on the passenger seat just makes the decision easier.
Read the article →Quick answers?
Prefer step-by-step? See the guides or the encyclopedia.