When to replace spark plugs on BMW X3?
BMW recommends replacing the spark plugs on X3 models every 100,000 miles. As mentioned above, with all the major engine and engine management design changes over the years, spark plugs now last up to three times as long as they did in years past. This is good and bad.
When did Ford replace the spark plug on the V10?
The TSB actually covers the V8 as well as the V10, for model years 1999-2004. For vehicles under warranty, Ford replaced the heads. Click to see full answer.
What should the spark color of a coil be?
Anytime the spark and the air/fuel are inside the envelope, there is ignition, regardless of the color of the spark. The spark needs to be bright blue. Also, you need to use a spark tester, NOT an old plug. The spark tester really makes the coil work hard.
What causes a spark plug to turn yellow?
Compression ratio of an engine and the amount of fuel being delivered can have an effect on how well the spark plug fires. This is called quenching the spark. A low compression engine running at a steady state with a constant fuel supply won’t quench even a spark plug with a yellow spark.
Anytime the spark and the air/fuel are inside the envelope, there is ignition, regardless of the color of the spark. The spark needs to be bright blue. Also, you need to use a spark tester, NOT an old plug. The spark tester really makes the coil work hard.
Compression ratio of an engine and the amount of fuel being delivered can have an effect on how well the spark plug fires. This is called quenching the spark. A low compression engine running at a steady state with a constant fuel supply won’t quench even a spark plug with a yellow spark.
What causes a spark plug to ignite in a car?
Where with most air cooled small engines they operate under a static condition or a steady state. Compression ratio of an engine and the amount of fuel being delivered can have an effect on how well the spark plug fires. This is called quenching the spark.
Why do ignition spark colors change over time?
I replaced it, and got a blue spark back, along with a much improved engine performance. On an automobile ignition system the spark should be bright blue. That’s because the compression ratio is higher than that on an air cooled small engine. An automobile engine operates under a transient condition where the RMP’s change so fuel demand changes.