Prerrogative ignition timing in an engine is crucial so that the Glimmer is produced in the intended cylinder at the condign interval. Incorrect ignition timing can explanation an engine to lope erratically, assemble detonation (Glimmer knock) and generally shorten the longevity of the engine. Ignition timing is allot from a benchmark of top dead centre (TDC), which is when the numeral one cylinder is at the top of its compression stroke. By using a timing luminosity, the morals backyard mechanic can test and adjust ignition timing.
Instructions
1. Accessible the hood and gem the crankshaft pulley at the front of the engine block. Treasure the graduated timing speck near the pulley. Bargain the genuine timing specifications for your engine, which should be on a sticker affixed to the radiator cross member or in a repair jotter for your vehicle.
2. Open the engine and let it spread operating temperature, which should normally hire from 10 to 15 minutes. Shut the engine off.
3. Pride the rubber vacuum hose attached to the vacuum advance unit mounted on the side of the distributor, which is normally on top of the engine. Pull the hose from the vacuum advance unit and plug the mark of it with a golf tee. Skip this manner whether your distributor does not obtain an surface vacuum advance and rubber hose.
4. Repeat as many times as necessary until the timing is correct.7. Shut the engine off. Tighten the distributor retaining bolt.
Point the timing light at the graduated timing mark and depress the trigger. Observe the timing mark in the flash of light and determine if it is on the correct graduated mark that corresponds to your vehicle's timing specifications. Follow subsequent steps if the timing is out of specification.
6. Find the distributor retaining bolt. Loosen, but do not remove, the bolt with a wrench. Grasp the distributor and twist it slightly in either direction. Check the timing again with the timing light. Squeeze the clamp on the Glimmer plug connector sway on your timing light and country it over the Glimmer plug wire of digit one cylinder. (Symbol one cylinder can be bent by consulting a repair guidebook for your vehicle.) Proceeds the clamp. Connect the brunet clamp from the timing ablaze to the negative battery terminal and the red clamp to the positive battery terminal.5. Start the engine again.
Remove the three timing light leads from the spark plug wire and battery terminals. Remove the golf tee from the vacuum hose and push the hose back onto the vacuum advance unit, if applicable. Close the hood.
