Dragging Difficulties of Defective Jaguar XJS Fuel Injector O-rings
Like screws, nuts, and bolts, a car won't be complete without something as simple and little as an O-ring. O-rings are present in every car, may it be ordinary or as luxurious as the Jaguar XJS, because they provide a high-pressure seal between the fuel injector and the fuel rail in the engine. O-rings are made with a durable yet pliable material, like rubber, to operate within an environment highly exposed to petroleum products. Over a span of time, changes in temperature and pressure variations can cause o-rings to warp, harden, and shrink in size. Because of this, tears may appear and will result to improper engine function; some of which can be described like the ones below.
Idling and misfiring
Since the o-ring is technically a part of the fuel delivery system, any changes with it will result to fuel delivery problems like idling and misfiring. When your car is idling roughly, this could very well be an indication that your vehicle's o-rings must be replaced immediately.
If upon inspection of the fuel injectors and leaks are found, that is a sign that the o-rings are not providing a nice and tight seal along the fuel delivery system. This could be particularly dangerous because it increases the fire hazard of the vehicle due to the fuel leak. O-rings are found clamped along the pathway of the fuel injector. Change them right away so that there won't be any more fuel wasted.
Misting on the injectors
When the car is idling, fuel is continuously travelling along the channels from the tank to the engine. However, if there's a problem with the o-rings, misting on the injectors are almost always present. This is comparable to leakage but this time, the amount of fuel spewing out isn't much.
Sometimes, damaged o-rings will still be able to hold its own within the delivery lines without leaks or misting if they aren't completely broken. Nevertheless, if minor cracks are present on the o-rings or if the plastic or rubber ring is split or stretched, they need to be replaced.