What is the timing and firing order of 998 cc engine?

The timing and firing order of a 998 cc engine depends on the specific engine design and configuration. Here is a general outline of the timing and firing order for a typical four-cylinder, four-stroke engine with a 998 cc displacement:

Timing:

* Intake valve opens: Approximately 10-15 degrees before Top Dead Center (TDC) on the intake stroke.

* Intake valve closes: Approximately 35-45 degrees after Bottom Dead Center (BDC) on the exhaust stroke.

* Exhaust valve opens: Approximately 35-45 degrees before BDC on the exhaust stroke.

* Exhaust valve closes: Approximately 10-15 degrees after TDC on the intake stroke.

Firing Order:

The firing order refers to the sequence in which the cylinders ignite and generate power. For a four-cylinder engine, the firing order is typically 1-3-4-2. This means that cylinder 1 fires first, followed by cylinder 3, then cylinder 4, and finally cylinder 2. The firing order is determined by the design of the engine's crankshaft and camshaft.

It's important to note that the specific timing and firing order can vary based on the exact engine design and manufacturer. Refer to the engine's specifications or technical documentation for the precise details.