Do iridium spark plugs foul?

I’ve been thinking about replacing my car’s spark plugs with iridium ones since they supposedly perform better and are more resistant to damage than double platinum. But can iridium spark plugs still foul?

Find out if you’re getting ripped off on your car insurance in less than two minutes.
No spam · No long forms · No fees
Find savings (100% Free)
rating white
3.5k Ratings
Answer provided by
Kathryn Mae Kurlychek
Answered on Apr 28, 2022
Indeed, iridium spark plugs are generally considered more durable than other kinds of spark plugs (like platinum ones). Nonetheless, they’re not invincible and can still foul and corrode.
Oil, fuel, or carbon can foul iridium spark plugs just like platinum. However, the higher level of durability associated with iridium means they’re less likely to blister. Iridium itself is a hard transition metal, and iridium spark plugs have a concentrated spark that equates to more reliable start-ups, greater gas mileage performance, and longer life spans overall.
In addition, using iridium spark plugs can increase the number of miles you can go between changing or replacing your spark plugs.
If you’re looking for car insurance that can stand the test of time, try Jerry, your personal car insurance broker for life. The Jerry super app lets you shop and save on car insurance easily.
Getting started takes just 45 seconds, and Jerry customers save on average $800+ per year on car insurance!

Here to save on car and home insurance? Great, you do that. We’ll do everything else.

Sign up in under a minute.
No need to fill out forms or shop around. Sign up in 45 seconds to start saving. Jerry does the rest.
Jerry collects and analyzes your current coverage.
Say hello to Jerry, your new insurance agent. We’ll contact your insurance company, review your current plan, then find the coverage that fits your needs and saves you money.
Get the best options before your renewal.
Jerry does all the picky, busy work by comparing prices and coverage from more than 50+ insurance companies. We compare what we find to your current policy and offer you the three best options before every renewal.

Easiest way to compare and buy car insurance

No long forms
No spam or unwanted phone calls
Quotes from top insurance companies
Find insurance savings — it's 100% free