PriceProtect™
DriveShield™
GarageGuard™
Services
Insurance
Car Insurance
Compare Car Insurance with Jerry
Jerry’s Expert Advice
Car Insurance Estimates
Home & Renters Insurance
Renters Insurance
Repairs
Car Repair Estimates
Repair Estimates for Popular Services
Advice
Read Car Content
Browse Jerry Car Advice
Check Out Expert Car QnA
Learn About How We Create Content
Jerry Data & Research
What is a spark plug gap?
My engine has been misfiring lately and I know it has something to do with my spark plug. I'm fixing the issue myself, but I'm not sure what a spark plug gap is. Can you help?
Lindsey Hoover · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
The spark plug gap is the distance between a spark plug’s center electrode and its ground electrode—when you set the gap distance, this is called ‘gapping’, and the width must be correct.
The width must be correct when gapping the spark plug because this ignites the air-fuel mixture in your engine’s internal combustion chamber. Essentially, your vehicle can spark at the proper voltage with an adequate distance between the electrodes.
You now know what a spark plug gap is, but you may be wondering what your vehicle’s gap setting is. Below we list some common gap settings:
- Standard engine should have a gap of 0.025”
- Performance engine should have a gap of 0.028”
- Distributorless ignition system should have a gap up to 0.060”
When in doubt, refer to your owner’s manual. Most engine manufacturers will include a recommended range for your spark plug.
Following a
basic car maintenance schedule
can help keep your vehicle running smoothly and could save you money in the long run. Another great way to save money is by using Jerry
.Jerry is the #1 rated
car insurance
app on the market today, and that’s because we make finding great insurance coverage at an affordable rate fast and easy. In just 45 seconds, a licensed broker will provide you with quotes from over 55+ top insurance companies, like Nationwide and Progressive. Once you make your selection, Jerry takes care of the rest!Jerry users save an average $887 a year on car insurance!
View full answer
- Gregory R.
WHY YOU CAN TRUST JERRY
Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.
Join 4M+ members in lowering their car insurance
You Might Also Be Interested
Read Advice From Car Experts At Jerry
What Others Are Asking
Browse More Content
Insurance in Your State
Easiest way to compare and buy car insurance
No long forms
No spam or unwanted phone calls
Quotes from top insurance companies