The definition of a rule is  an official regulation, code of regulations or set practice. An example of a rule is that a red light means stop. An example of a rule is an employer demanding their employees arrive at 8am.
New injectors cost anywhere from $80-$120 apiece, making their replacement a somewhat pricey endeavor. There are three types of injector leaks-it can leak fuel into the manifold from the nozzle, it can leak fuel into the engine compartment from the fuel rail, and it can leak air (vacuum leak) from the manifold.
Repair costs for a Porsche Cayenne fuel injector runs around $400 â $590. This is the price for one fuel injector replacement, but you may have to replace more than one. Dead Alternator. If your Cayenne wonât start, check the battery first. When you take your vehicle to the shop, theyâll also test the alternator. If the battery is healthy, it could be the alternator doesnât charge sufficiently. You may also notice dimming of the headlights or interior lights. Porsche Cayenne alternator replacement costs range from $890 â $1460.