Hovig Manouchekian
Auto Repair & Design Specialist
wikiHow's Editorial Process wikiHow partners with over 1000+ experts from a wide range of fields to ensure our content is accurate and based on well-established research and testimony. Content Managers conduct interviews and work closely with each expert to review information, answer reader questions, and add credible advice. Learn more about our editorial process and why millions of readers trust wikiHow.
Co-authored Articles (61)
How to Diagnose Steering Wheel Shake
Fix a shaky steering wheel in no time with this simple guide It can be scary if you’re driving and your steering wheel starts to shake, but breathe easy knowing this is normally not a super serious problem. In fact, a ...
How to
Clean Windshield Wipers
Windshield wipers are important to keep in good health. They are an often-overlooked safety item that is vital to navigation during heavy rain, snowfall or even a bombardment of those bugs that go splat. This article wil...
How to
Change a Mercedes Battery
Does your Mercedes have a slow crank on startup? Does it not start at all? The first thing to check is what is called the "systems battery," which powers the whole car.
How to Remove and Clean Your Vehicle's O2 Sensors
Step-by-step instructions for spotless oxygen sensorsA dirty oxygen sensor can cause your vehicle's “check engine” light to come on and result in other symptoms like decreasing the car's fuel efficiency. In this arti...
How to
Know if Your Wheel Bearings Are Going Bad
Wheel bearings are metal balls held by a ring and allow the wheel on your vehicle to spin with as little friction as possible. Over time, bearings can break down due to a lack of lubrication and typical wear and tear. Dr...
How to
Size a Radiator
Radiator sizing requires a calculation of your heating needs. The heat needed from a radiator changes depending on your room. Measure out your room. Larger rooms need more heat and some features, such as outside walls, c...
How to
Read a Torque Wrench
Knowing the level of torque you’re applying to a nut is essential for the stability of a piece of machinery or structure. If you use too little torque, the nut may not be secure, and if you apply too much, you could st...
How to Detect and Fix a Misfire: Common Problems, Solutions, & More
Everything you need to know about DIY diagnosis and repairAn engine misfire happens when one of the cylinders in your engine fails to function properly. When you have a misfire, the engine will run off balance, creating ...
How to
Fix Engine Oil Blow‐By
Oil blow-by is caused by a buildup of pressure inside the engine’s crankcase being transferred back into the intake.. 20 December 2023. In older vehicles, this pressure was simply released into the atmosphere, but newe...
How to Connect a Car Battery
Learn how to hook up your car’s battery and get your vehicle back on the road To reconnect your car’s battery, all you need to do is connect the car’s positive and negative cables to the correct battery terminals a...
How to
Reduce Diesel Engine Noise
Diesel engines have a reputation for being especially loud because they produce more pressure and vibrations than gasoline engines. This can be an inconvenience if you drive a diesel truck, lawnmower, or similar vehicle....
How to
Adjust an Air Fuel Mixture Screw
An air fuel mixture screw is a special screw on an engine’s carburetor that controls how much air mixes with the fuel. Adjusting this screw changes how fast or slow an engine idles and how smoothly it runs. The basic p...
3 Ways to Tell if a Clutch is Bad on a Used Car
Check the clutch by pressing it down, shifting, or going on a test drive On manual transmission cars, the clutch pedal often wears out over time, which is a common problem on used cars. Replacing the clutch is an expensi...
How to Operate Windshield Wipers: Turning Wipers On and Off
You’re gearing up for a rainy day or about to take your driver's test and you realize–wait, how do I turn on my windshield wipers? No worries, windshield wipers are actually super easy to operate. While each car’s ...
7 Symptoms of a Bad Spark Plug
Learn to recognize the signs of a faulty spark plug Has your vehicle’s performance suddenly had a drastic change? Engine sputtering or not even running at all? Before you spend money on a mechanic, see if a bad spark ...
Car Rattling and Shaking while Idling: Causes & Fixes
A detailed guide on diagnosing a vehicle that shakes If your vehicle starts rattling when your vehicle is idling, you may be worried that something serious is going on. The good news is that most of the potential causes ...
How to
Fix a Locked Steering Wheel
Steering wheels lock in position as part of a vehicle's safety features. The main purpose of a locked wheel is to prevent vehicle movement when there is no key, or if the wrong key is inserted into the ignition. Unlockin...
How to Fix a Frozen Steering Wheel (Push to Start or Keyed)
Free your steering wheel up with these simple solutions In a lot of cases, a locked steering wheel is a minor problem caused by the steering column being jammed at an awkward angle against the ignition cylinder (whether ...
How to Diagnose a Flashing Check Engine Light and Shaking Car
Figure out what’s keeping your vehicle from running correctly You’re driving down the road when your car starts rattling. Then, the check engine starts flashing. Can you keep driving or do you need to pull over? What...
Why Does My Car Shake When Accelerating?
Get your car back on the road with this simple guide If your vehicle shakes when you accelerate but not when you coast, there are two major vehicle systems that could be to blame. On one hand, it might have something to ...