How does the fuel system work on a Jaguar XJ12?
The fuel system is quite remarkable too; on the XJ-S there is a fuel pump in the boot sitting in its own little tank, fed by gravity from the main tank. On XJ12 there are two main fuel tanks which both feed the fuel pump in the boot but with fuel solenoids to select which tank is used.
Where are the cooling caps on a Jaguar V12?
You will also notice it has two cooling system pressure caps, one at the front of the engine and one on the expansion bottle on the wing. Nearer the rear of the engine is the throttle pedastle, this is where the throttle cable operates a circular device that in turn operates the two throttle links, more of that later.
How to request new parts for a Jaguar?
Complete the Jaguar Parts Request Form: Can’t find the new or used Jaguar parts you need? Complete the Jaguar Parts Request Form:
What did I do when I opened the bonnet on my XJ-S V12?
The first time I opened the bonnet on my XJ-S V12 I just stared at it in disbelief for a few minuets, then gently shut the bonnet again and walked away.
The fuel system is quite remarkable too; on the XJ-S there is a fuel pump in the boot sitting in its own little tank, fed by gravity from the main tank. On XJ12 there are two main fuel tanks which both feed the fuel pump in the boot but with fuel solenoids to select which tank is used.
What kind of Revs does 1986 XJS V12 have?
We recently bought a 1986 XJS V12. When starting from cold the engine revs up and down between 400 and 1.600rpm. This continues until the engine has warmed up. Once hot, it starts every time without problem. I have flushed out the cooling system. fitted new thermostats and changed all twelve plugs.
The first time I opened the bonnet on my XJ-S V12 I just stared at it in disbelief for a few minuets, then gently shut the bonnet again and walked away.
Why did the Jaguar V12 have hot re-start problems?
Early systems suffered from hot re-start problems due to having very small bore fuel rails which are prone to fuel vaporisation in the heat, the later larger bore system is a useful upgrade.
Why does my Jaguar XJS have poor fuel economy?
In summary, the fuel filter sold for the model was not manufactured to suit Honeywell’s specifics resulting in incorrect placement of the O-ring on the fuel line. Automatically, inadequate sealing will lead to leaking of oil out of the engine. Apart from being a fire hazard leaking fuel is a major cause of poor fuel economy.
Why is my Jaguar XJS prone to rust?
In this second section we will discuss these general issues and how they can be addressed. Because of the nature of the XJS body, it is prone to rust and rot on and inside various components. These areas susceptible to rust make it easier for components to corrode and fade away.
When did the first Jaguar XJS come out?
It is the pioneer to an iconic Jaguar series that had its debut in September f 1975. Coupled with a V12 engine and powerful transmission, great things were expected of this model.
What to do about water leak in Jaguar XJS?
Mild contamination can be rubbed down and painted over with a fresh coat of paint. More serious rust or rote will require that sections be cut off and effectively replaced. Water leaks and oil leaks are popular with these vehicles. Water leaks for example are as a result of blockage within the air conditioning drain.
Why is there a problem with mystifying my Jaguar?
So the vacuum capsule is connected to several air solenoids, a vacuum regulator, a vacuum dump valve. The biggest problem with this comes from old rubber hoses perishing, the second biggest problem comes from people re-assembling the system incorrectly.
What was the final version of the Jaguar V12 ignition system?
The final iteration of the V12 ignition saga happened after the change to 6 litres when the distributor was deleted in the and replaced with individual coils for each cylinder. Of these systems the most common is the Opus, and it is also the one with the most complicated vacuum advance system ever made. Its also very clever.