What is the spark plug gap for a Zafira 1.8?

1. What is the correct spark plug gap?
2. Do NGK Spark plugs need to be gapped?
3. What happens if the gap is too big on a spark plug?
4. Is a bigger spark plug gap better?
5. What does a smaller spark plug gap do?
6. Is it OK to Gap Iridium spark plugs?
7. Are spark plugs factory gapped?
8. Does spark plug gap affect timing?
9. What happens if point gap is too small?
10. Why does my car shake after I changed the spark plugs?
11. What gap should points be set at?
12. What is an E3 spark plug?
13. Does spark plugs increase horsepower?
14. Are NGK spark plugs good?

What is the correct spark plug gap?

For most racing applications, you usually want the plug gap to be between 0.020 and 0.040 of an inch. Most engine builders seem to settle around 0.035 of an inch. Factors such as the type of ignition you run, cylinder heads, fuel and even timing can affect how much gap will work best for you.

Do NGK Spark plugs need to be gapped?

While most NGK spark plugs are pre-gapped, there are occasions when the gap requires adjustment. Care must be taken to avoid bending or breaking off the fine-wire electrodes. ... NGK also recommends adjusting the gap no more than +/- 0.008” from the factory preset gap.

What happens if the gap is too big on a spark plug?

One of the key factors that makes a spark plug work well, or not, is the size of the gap between the electrodes. ... However, if the spark plug gap is too large, the spark is unlikely to consistently "jump" across the long distance between electrodes, thus leading to a rough-running engine or one that doesn't run at all.

Is a bigger spark plug gap better?

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.

What does a smaller spark plug gap do?

A smaller gap will yield a short, intense spark and will usually make the engine real responsive. A wide gap creates a longer spark arc but without sufficient "juice" from your ignition system, (including amps), it can be weak and yellow in color.

Is it OK to Gap Iridium spark plugs?

In most cases your Iridium Power plugs do not need to be gapped. ... Should you decide to re-gap your Iridium Power plug, use extreme caution as improper gapping may damage or destroy the Iridium center electrode or porcelain center.

Are spark plugs factory gapped?

Spark plugs traditionally leave the factory pre-gapped for their most popular application. However, a plug may fit hundreds of engines, from cars to golf carts. Gapping the plugs to your engine's specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy.

Does spark plug gap affect timing?

Changing the spark plug gap won't affect the ignition timing, but it will have some affects on the ability of the spark plug to ignite the fuel.

What happens if point gap is too small?

This means there is a misfire. If the gap is too small, the spark will easily jump across without too much ionisation so no hot flash. This can mean partial ignition and low power or even another misfire.

Why does my car shake after I changed the spark plugs?

Poor fuel pressure, faulty spark plugs, and misfires are some of the things that can cause shaking or vibration.

What gap should points be set at?

The Haynes manual recommends a point gap of . 016-. 020 inches for engines used in the P1800. I used to set my points at exactly .

What is an E3 spark plug?

E3 automotive spark plugs utilize the latest E3 technologies to help engines operate more efficiently by burning fuel more completely. Our patented DiamondFIRE ground electrode gets the flame (or combustion process) started earlier in the combustion chamber before gas is vented off when the exhaust valves open.

Does spark plugs increase horsepower?

In short, yes, in some situations spark plugs can increase horsepower. ... These 'massive' gains of one or two per cent generally won't be exceeded, even if you're replacing really old and worn spark plugs for new ones. In this case, your essentially just restoring your car back to its peak performance.

Are NGK spark plugs good?

Consistently high quality, a comprehensive applications catalog and time-proven performance make NGK an excellent choice for standard electrode and noble metal wire tipped spark plugs.