What can be used to clean spark plugs?
2 Answers
Spark plugs can be cleaned using white vinegar, carburetor cleaner, or toilet cleaner. The cleaning methods are as follows: 1. Place the spark plug in a glass container, pour white vinegar to submerge it, soak for 2 to 3 hours, then scrub clean with a hard toothbrush and air dry naturally; 2. Place the spark plug head-down in a glass bottle, spray carburetor cleaner into the bottle until the spark plug is submerged, cover the bottle, wait for about half an hour, then take it out, scrub clean with a toothbrush, and air dry or use a hair dryer to dry; 3. Soak the spark plug ignition electrode directly in pure toilet cleaner, place it in a ventilated environment for 10 minutes, wait until the bubbles gradually decrease, then remove it, rinse with white vinegar, and air dry.
I've been driving for over 20 years, and the simplest way to clean spark plugs is by soaking them in white vinegar, especially when there's heavy carbon buildup on older car plugs. Remove the spark plugs and soak them in vinegar for a few hours, then gently scrub off the dirt with a toothbrush, being careful not to scratch the electrode area. Nowadays, supermarkets sell specialized automotive cleaners that make the job even easier—just spray, wait a few minutes, and wipe dry. However, after cleaning, remember to check the electrode gap and adjust it to the specified value using a feeler gauge. An incorrect gap reduces ignition efficiency, making the engine hard to start and causing black smoke. Regular cleaning can extend the lifespan of spark plugs and save money on replacements, but if carbon buildup is severe, it's better to replace them—safety first. Spark plugs are the heart of the engine; signs like unusual exhaust color or slow starts indicate they're dirty, so address the issue early to avoid breakdowns.
