What to know about the Timing Gears (Gear To Gear):
Proper engine operation is regulated by a precise system of gears that are linked by chains, belts, or teeth. When functioning correctly, timing gears control how much air and fuel enter each cylinder by opening and closing the valves, firing the spark plugs, and releasing exhaust fumes at the proper timings. They also control other engine functions such as water pump operation and oil pump operation in some cases. The primary timing gears are the crankshaft gear and the camshaft gear or gears. The gears are made of steel or aluminum normally, and are quite durable. In extreme circumstances, it is possible for gear teeth to chip or break. A damaged timing gear is nearly always an instant cause for concern, and the engine will not run or will run very poorly because of it.
READ ALSO: WHAT IS TIMING COVER REPLACEMENT IN CARS
Facts to Note:
Every engine manufacturer and camshaft manufacturer has different timing gear inclinations for their specific parts. There is no one right setting for all vehicles.
If your engine’s timing is incorrectly set even in the slightest, your engine will run rough or may not run at all.
How to Fix:
The vehicle battery is disconnected
The faulty gears are removed
The new gears are changed and the battery is reconnected
The fluids are filled and the timing is attuned
The repair is confirmed and the vehicle is road tested for proper operation
Timing gears are oiled by engine oil, so regular oil changes are required to keep timing gears in good condition. They are only accessible when the timing cover is off for a timing belt or chain repair/replacement, and should be checked at that time. If the timing gears are damaged or worn in any way, they need to be changed.
Common symptoms indicating you may need to change the Timing Gears (Gear To Gear):
Engine does not run at all
Metallic rattling noise from the engine compartment
Engine backfires and runs poorly
Importance of this service:
Timing gears in good functioning condition are vital to your engine’s operation. Your engine will not run appropriately or at all otherwise, and if your timing gears are damaged, they need to be changed straightaway.