The timing for the Peugeot 1.4 X-Line engine typically refers to the engine's ignition timing, which is generally set around 10-12 degrees BTDC (Before Top Dead Center) for optimal performance. The firing order for this engine is 1-3-4-2, meaning that cylinder 1 fires first, followed by cylinder 3, then cylinder 4, and finally cylinder 2. It's essential to follow the manufacturer's specifications for accurate timing settings and maintenance.
an xline
In MATLAB, you can insert vertical or horizontal lines on a graph by using the xline or yline functions, respectively. For example, to add a vertical line at ( x = a ), use xline(a, 'r--'), and for a horizontal line at ( y = b ), use yline(b, 'g--'). These lines can help you visually test if a given relation defines a function by checking if any vertical line intersects the graph at more than one point (the vertical line test).