Table of Contents
Does timing affect fuel?
Fuel does burn at a fixed rate: Engine timing, compression ratio, and timing profiles are inherent to each design. Altering timing profiles changes that fuel’s burn time. As a result, fuel energy would be wasted due to incomplete combustion.
What will Advancing timing do?
The major benefit to advancing the timing of a vehicle’s ignition is increasing the horsepower of an engine. Advancing the ignition timing helps raise the high-end power while reducing the low end. It also helps get the spark past the ignition delay and run at peak power.
Will advanced timing cause overheating?
Too much advanced timing can eventually result in overheating but you would probably notice poor performance, backfires, or pinging before overheating begins – assuming you don’t keep driving under these conditions.
What does advancing timing do on a diesel?
For a diesel “advancing the timing” refers to injection timing. Advancing the timing means that fuel is injected earlier in the engine cycle. Generally advancing timing will get you better fuel economy, lower EGT’s, higher peak cylinder pressures, and higher NOx emissions.
How much timing is too much?
It’s generally acknowledged that peak cylinder pressure needs to occur at roughly 15-18 degrees After Top Dead Center in order to maximize leverage on the crankshaft. If the spark timing is initiated too early, the cylinder may experience detonation and potentially cause damage.
What causes GREY smoke from a diesel engine?
Put simply, when it comes to grey smoke, diesel cars tend to emit it when they lack enough oil. Besides from being a sign of excess oil burning in your diesel engine, the smoke could also indicate: A faulty PCV (Positive Crankcase Ventilation) valve – This part is responsible for emission control.
What is ignition timing advancement?
The air and fuel mixture in the combustion chamber doesn’t burn right away. Ignition timing advancing might be needed to allow time to get everything ignited. The major benefit to advancing the timing of a vehicle’s ignition is increasing the horsepower of an engine.
What happens if you advance the timing too far?
However, if the timing is advanced too far, it will cause an Engine Knock. Subsequently, question is, does advancing timing increase horsepower? Optimum timing from a fixed (locked) ignition advance occurs at only one engine speed.
How does the engine speed affect the timing?
The engine speed operating range affects where the timing is the best. Increasing the timing advance raises the high-end power, reducing the low-end. Decreasing the timing advance raises low-end power, reducing the high-end.
Do modern cars run better with timing advanced?
Most also have one or two vacuum advance mechanisms. From experience it seemed some of the cars from ~’73 to ’85 would run better with the base timing advanced by 2-4 degrees over spec. Emission systems weren’t so sophisticated and retarding spark was one way to reduce hydrocarbon emissions.