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.May 29, 2009
What is the spark plug gap for a 2013 Chevy Cruze?
Plug Type: 14 FR-7 DPPUS2; Gap . 028.
Do NGK 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?
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.
How do I know if my spark plug gap is wrong?
- Rough Engine Idle. An engine that has a rough, irregular engine idle is often due to spark plugs that are incorrectly gapped. ...
- Engine Hesitation. ...
- Engine Missing. ...
- Poor Engine Performance. ...
- Engine Knocking.