What is the important of ignition timing number?
Setting the correct ignition timing is crucial in the performance of an engine. Sparks occurring too soon or too late in the engine cycle are often responsible for excessive vibrations and even engine damage. The ignition timing affects many variables including engine longevity, fuel economy, and engine power.
Which affects the ignition timing?
A range of factors can influence the ignition timing in an engine, including the condition of the spark plugs, the temperature of the engine, and the intake pressure.
What are the factors affecting ignition timing?
The right time to ignite the fuel is affected by various factors such as the engine displacement, octane rating of the fuel, engine compression ratio, condition of the spark plugs and intake pressure of the engine. Typically, the ignition timing is adjusted when any changes or upgrades are made to the engine.
What can affect ignition timing?
A range of factors can influence the ignition timing in an engine, including the condition of the spark plugs, the temperature of the engine, and the intake pressure. Changes or upgrades to an engine will require subsequent changes to the ignition timing settings.
What should ignition timing be with vacuum advance connected?
Total ignition timing with vacuum advance connected should be no more than 36 degrees BTDC. At idle, it should be 6 to 12 degrees BTDC. By 1973, distributor vacuum control became more complicated, with some applications having an advance/retard unit and some having only an advance unit.
What should the ignition timing be on a Ford 351?
Igniton timing should be checked two ways at 2,500 to 3,500 rpm: vacuum advance connected and disconnected. Total ignition timing with vacuum advance connected should be no more than 36 degrees BTDC. At idle, it should be 6 to 12 degrees BTDC.
What should the ignition timing be on a Chevy Silverado?
The general repair manual suggests 4° BTDC, but online you read its more around 8° BTDC. The timing connector for the Chevy Silverado breaks out of the engine wiring harness conduit adjacent to the distributor.
What’s the correct ignition setting for a 5.8 liter engine?
Locate the timing chain cover and crankshaft dampener notch. Wipe the timing plate clean and use white paint or “White-Out” to mark the notch at the correct ignition timing setting. For our 5.8-liter engine example above, your setting is “10*BTDC.”