What is the spark plug gap on a Toyota?

What is the spark plug gap on a Toyota?

Toyota recommends a gap of 0.031 inches for spark plugs used with the 4A-FE engine. You can check and set this gap using an inexpensive gap-gauge tool. The 4A-FE is a four-cylinder engine, and you should replace all four plugs at the same time.

Are Toyota spark plugs pre-gapped?

Its definitely not required, but the anti-seize will make changing them in the future easier. I have found most plugs come pre-gapped, but you should be prudent and check them before you go to the trouble and put them in, just to be sure. As for anti-seize and grease, I always put both on.

What happens if spark plug gap is too large?

Excessive spark plug gap results when the voltage has too far to travel. Excessive plug gap also results in cylinder misfiring, a possible no-start condition, wet, black or fouled plugs, engine hesitation and rough idle. Excessive spark plug gap also happens as result of normal electrode wear and age.

What happens if the spark plug gap is too small?

The Spark-Plug Gap If the gap is too small, the spark will likely be too weak and cause the engine to run poorly or with poor efficiency. A spark-plug gap gauge both measures and adjusts the gap and is inexpensive and simple to use.

Do OEM spark plugs need gap?

Do OEM plugs come pre-gapped? Thanks in advance! They’re “supposed” to come pre-gapped, but I’ve never seen a set that was actually right. You definitely need to gap them yourself.

Which is better NGK or Denso?

Denso plugs are installed on almost every automobile model manufactured in Japan. The iridium used in them has a superior hardness. The electrode’s diameter in Denso plugs shrinks more than an NGK. For this reason, Denso plugs do not last longer than NGK units, but they are better at producing powerful sparks.

What happens if spark plug gap is too wide?

An engine that hesitates, or stumbles, upon acceleration is often the result of incorrectly gapped spark plugs. If spark plugs are gapped too wide, the ignition spark loses some of its strength as it crosses the spark plug gaps. This can result in engine hesitation.

What does a larger spark plug gap do?

The larger the gap, the more voltage is needed to jump the gap. Most experienced tuners know that increasing the gap size increases the spark area exposed to the air-fuel mixture, which maximizes burn efficiency. For this reason, most racers add high-energy ignition systems.