Question: Can Timing Affect Compression?

Will advance timing cause rich?

Not enough timing advance will only cause knock if you are already running too rich causing knock.

So that kind of goes hand in hand.

Bear in mind that while a leaner mixture can allow more timing, a leaner mixture also creates more heat, causing that extra timing to make some knock..

What happens if your timing is too advanced?

Advancing the timing means the plug fires earlier in the compression stroke (farther from TDC). Advance is required because the air/fuel mixture does not burn instantly. It takes time for the flame to ignite the all the mixture. However, if the timing is advanced too far, it will cause an Engine Knock.

How do I know if my ignition timing is too advanced?

Symptoms of incorrect ignition timing are poor fuel economy, sluggish acceleration, hard starting, backfiring, or “pinging” or “spark knock”. Too little spark advance will cause low power, bad gas mileage, backfiring, and poor performance. Too much advance will cause hard starting and pre-ignition.

How much ignition timing is too much?

There is no such thing as too much ignition timing. The terminology for petrol engines with spark plugs is degrees before top dead centre, or degrees after top dead centre. So the question comes down to – too much retardation, or too much advance. Retarded ignition would not enable the engine to achieve maximum rpm.

What problems can occur if the ignition timing is too early?

Incorrect ignition timing can cause several engine problems such as; Knocking or Pinging. Difficult Starting. Excessive Engine Heat.

What should ignition timing be at idle?

Idle/staging is typically 55 degrees to ignite the cylinders with a rich idle mixture. Launch typically 50-53 degrees adjusted for an optimum power at launch. Sudden drop of the timing to typically 36 degrees, approx.