Correct ignition timing is critical for your vehicle engine performance.
After setting the ignition timing, turn off the engine, connect the computer control advance, distributor vacuum hose and tighten the distributor mounting screws or sensor.
Check Ignition Timing
Set the Vehicle Emissions Check Erudition (VECI) classify on the engine compartment of your vehivle. This tab contains tune-up specifications, including the degrees the ignition action should be adjusted to for optimal engine performance. The unit should be something congruous to "10 degrees BTDC" (Before Top Dead Centre).
Once you apperceive the licence figure of degrees for your vehicle, bring your engine to operating temperature to probation and, whether obligatory, adjust the timing.
Depending on your specific vehicle base, fix the timing measure markings and pointer on the harmonic balancer of the crankshaft and comprehend closest to it or the engine flywheel and clutch housing. You might acquire to rotate the crankshaft to fix the marks on the harmonic balancer or clean off grease from the markings to produce them visible. Whether compulsory, spotlight the pointer with a ashen marker for more select visibility during the adaption procedure.
Before starting the engine, disable the pc control advance. Depending on your vehicle model, you will have to disconnect a wire next to the distributor or under the dashboard, in the passenger compartment. Then hook up the timing light to the battery and spark plug wire on the first cylinder and start the engine.
With the engine running, the timing light will begin to flash, just like a strobe light. Point the light to the timing marks on your vehicle. The flashing light will make the rotating pointer or degree markings appear stationary. The pointer will indicate the degrees on the markings the ignition system is synchronized to.
Adjust Ignition Timing
If the pointer is off the degree mark provided on the VECI label, turn off the engine and loosen the distributor mounting bolts. Also, detach and plug the vacuum hose from the distributor, if equipped. On some other vehicles, the timing is adjusted by rotating the engine speed sensor or crankshaft position sensor, says James E. Duffy in "Modern Automotive Technology." Consult your car owner's or service manual, if necessary.
With the engine running and the timing light pointed at the timing marks, gradually rotate the distributor or sensor in either direction to bring the pointer in alignment with the correct degree number on the timing markings.Correct ignition timing on your vehicle is extensive for skilled engine development. A slight deviation of 3 or expanded degrees Testament interest engine fuel economy, function and performance. Ignition timing is chip of the tune-up procedure in many vehicles on the system nowadays. Nevertheless, the vehicle machine on newer models adjusts the timing automatically.
