Q: Spark plugs
What happens if spark plugs are not properly installed?
Recommended Services
| Spark Plugs Replacement | $113.11 - $716.47 | Get a Quote |
Installing a spark plug incorrect is most likely caused by the gap of the plug is incorrect or hit when installing it closing the gap. The spark plug may also get cracked when installing the plug. After any of these mishaps with the spark plugs you will have a bad engine misfire, hard start, hesitations and jerks and the check engine light will come on. A mechanic like one from YourMechanic can come to you and perform a spark plug change or most any kind of maintenance work you need.
The statements expressed above are only for informational purposes and should be independently verified. Please see our
terms of service
for more details
Get an instant quote for your car
Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
What others are asking
Oil leak after hitting dip
If you hit a dip, and then started leaking oil it is very possible that you may have damaged your oil pan, or the gasket. I would recommend having a professional technician, such as one from YourMechanic, look at the...
Sound when starting - 2004 Dodge Durango
Hello there. You are off to a good start in fixing your 2004 Dodge Durango. If there is a knocking sound and replacing the starter did not fix the issue, and you have a knocking noise when cranking, then it...
My car shakes while it idles but says there is an evap system leak?
An evap leak is the same thing as a vacuum leak. A vacuum leak will certainly cause the engine to run roughly. I would recommend having your vacuum levels checked with a vacuum gauge by a qualified professional to determine...
AC off - 2011 Chevrolet Cruze
Hello. Your Chevy Cruze uses a "heated" engine thermostat (https://www.yourmechanic.com/services/thermostat-replacement) (under computer control) which has caused some problems. There is a Technical Service Bulletin (https://www.yourmechanic.com/article/how-to-use-a-technical-service-bulletin-by-parker-hill) (301268) to address the "engine is cold" issue - software reprogramming). There are also multiple...
When do you replace the serpentine belt?
Visually inspect the serpentine belt (https://www.yourmechanic.com/services/serpentine-drive-belt-replacement) for any cracks or fraying. Also, if you have the belt removed for inspection, bend the belt back and forth to check its flexibility. See if the belt feels soft or hard. If the...
Car won't start - 2006 BMW 325i
Hi there. If the engine is not cranking, then the issue can be a number of things. I usually start by checking for power at the starter when trying to crank it over. If there is no power there, then...
cost for engine replacement
Your vehicle is fairly new and most likely the motor does not need to be replaced. A motor that doesn't run has many reasons that it would not. Please give us some more information so we can help you more...
What does trouble code P0325 mean?
Hi there - P0325 (https://www.yourmechanic.com/article/p0325-obd-ii-trouble-code-knock-sensor-malfunction-sensor-1-bank-1-by-spencer-clayton) is a Knock Sensor Malfunction. Knock sensors provide a significant function in a modern engine. A failure of the engine knock sensor is a somewhat risky issue. Modern engine have fairly high compression ratios, all...
Aircon blowing out white stuff.
There shouldn't be any dangerous materials in the AC system. But it is possible that you have a buildup of dust or even mold. Your car has a cabin air filter that is supposed to keep anything out of the...
Related articles
How a Car Ignition System Works
The The complicated process of a vehicle's ignition system requires precise timing on the part of the various systems involved. Starting a vehicle involves much more than just turning a key in the ignition switch; it requires each system to...
How a Keyless Push-Button Ignition Works
Technology Technology has advanced for automotive security and user-focused features, and a shift is occurring where traditional key-and-cylinder starting systems are being replaced by keyless push-button ignition systems. They are incredibly simple to operate and provide excellent security. The system...
How to Buy a Good Quality Ignition Coil
Ignition Ignition coils operate in a very similar fashion to a transformer; with a 12-volt power source that produces output current simultaneously to an input current that’s being applied. By creating an efficient magnetic field, the force of the electricity...
Browse other content
Services
Estimates