What does it mean to advance timing?
Ignition timing advancing means that the spark plugs are firing earlier in the compression stroke, farther from TDC. The air and fuel mixture in the combustion chamber doesn’t burn right away.
What should your timing advance be?
“Timing advance” refers to the number of degrees before top dead center (BTDC) that the spark will ignite the air-fuel mixture in the combustion chamber at the end of the compression stroke. Ideally, the time at which the mixture should be fully burnt is about 20 degrees ATDC.
What happens when timing is too advanced?
If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.
Does advancing timing lean or rich?
as was brought out, the timing has little effect on rich/lean issues and even less on a computer controlled engine. the ecm looks at all of the parameters and calculates the needed corrections to a burned in fuel map.
Can timing affect fuel mixture?
Correctly timed ignition will cause peak cylinder pressures to occur around 12 to 15 degrees after TDC. If the peak cylinder pressure is reached too early, power will be lost as the piston fights to compress the burning air/fuel mixture. Detonation may also occur, which can lead to engine failure.
What happens when the timing is advanced?
Advanced Timing Setting the timing at a high position, or at a degree too advanced relative to the position of the piston during the compression stroke, causes the combustion mixture to exert force against the piston. This force may result in engine damage, engine failure, or pre-ignition system damage.
What does advancing the timing mean and do?
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. So, at the chance of more stupidity.
How does my car advance timing?
How to Advance or Retard Ignition Timing Step 1. Park the vehicle on a level surface and apply the parking brake. Open the hood. Step 2. Locate the distributor, which will be near the top of the engine at either the front of back of the engine block. Step 3. Loosen the distributor mounting bolt
How do you set timing on engine?
Adjust while the engine is at idle speed. Grab the distributor firmly and rotate it slowly to one side or the other. Continue rotating until the timing mark is in the correct position. Align the timing marks by continuing to move the distributor and checking with your timing light.