How do you remove the radiator on a Jaguar XJ?
Use the drain cock to neatly drain the coolant into a container, and then remove the radiator hose to flush water through. Both the official Jaguar manual and the Haynes manual state that removing the radiator requires discharging the air conditioner freon circuit. They lie. In fact, as Jim Isbell reports,
Where is the radiator located on a JAG?
Disconnect the hoses from the transmission cooler and the wire from the coolant level sensor (early models only) and whatever other little things are hanging on, and pull the radiator out straight up. The radiator is mounted on four rubber bushings, two at the bottom (C43577) and two at the top (C38333).
What kind of radiator does a XJ-S have?
Although it is probable two thermostats were used to reduce piping, they do provide some redundancy. John’s Cars offers “super-duty” radiators to fit the XJ-S, including a 5-row unit for the pre-H.E. car.
Is there a leak in the XJ-S cooling system?
In theory, leak sealers will not solidify until they come in contact with air; however, there is always a little air INSIDE a cooling system, and in the case of the XJ-S there is apparently enough to cause trouble. Please, do not use any leak-sealing substance within the V-12 cooling system.
Where is the radiator drain on a Jaguar XJ?
RADIATOR DRAIN: Up until somewhere around 1988, the XJ-S was fitted with one of the most obnoxiously overdesigned radiator drain cocks in automotive history: a metal drain valve at the bottom right corner of the radiator, operated by a lever that extended up to just below the upper hose fitting.
When did the cooling system change on a Jaguar?
Somewhere around 1988 — possibly coinciding with the introduction of long-life phosphate-free coolant — Jaguar went from the overdesigned drain cock to no drain cock at all. On later cars, it is necessary to disconnect the lower radiator hose to drain the coolant. Wearing a tux is not recommended.
What to do if your Jaguar radiator overheats?
Crud in the system will cause overheating under all conditions, but usually more at speed than at idle. Since Jaguar manuals recommend the use of Barrs Leaks, any radiator that has been maintained according to the manual is likely to be plugged. 2. Suspend the thermostats in a pan of water on the stove and bring them to a boil.
When to replace Ignition System on Jaguar XJS?
If you have a pre-1989 XJS you may want to consider Jaguar parts to replace the original ignition system as it had a distributor problem which seized up the catalytic converter and caused fires. Head gaskets and fuel injection hoses should also be replaced when worn out for the same reason.
Use the drain cock to neatly drain the coolant into a container, and then remove the radiator hose to flush water through. Both the official Jaguar manual and the Haynes manual state that removing the radiator requires discharging the air conditioner freon circuit. They lie. In fact, as Jim Isbell reports,
Disconnect the hoses from the transmission cooler and the wire from the coolant level sensor (early models only) and whatever other little things are hanging on, and pull the radiator out straight up. The radiator is mounted on four rubber bushings, two at the bottom (C43577) and two at the top (C38333).
Although it is probable two thermostats were used to reduce piping, they do provide some redundancy. John’s Cars offers “super-duty” radiators to fit the XJ-S, including a 5-row unit for the pre-H.E. car.
What should I do if my Jaguar V-12 overheats?
If no other options are available, drive it short distances at a time, shutting it off and allowing it to cool before starting again. In the Jaguar V-12, a more common symptom of an overheated engine is a dropped valve seat. Since the heads are aluminum, the valve seats are steel rings that are pressed into the aluminum.
What causes a Jaguar V-12 engine to overheat?
In the Jaguar V-12, a more common symptom of an overheated engine is a dropped valve seat. Since the heads are aluminum, the valve seats are steel rings that are pressed into the aluminum.
Where does the coolant come from on a JAG?
The coolant coming from the left bank, via the left side thermostat, enters at the top left and flows left-to-right through the top third (it cannot go directly down to the outlet because there is an internal baffle in the radiator). Then the coolant from the right bank comes in, mixing with this already-cooled fluid.
In theory, leak sealers will not solidify until they come in contact with air; however, there is always a little air INSIDE a cooling system, and in the case of the XJ-S there is apparently enough to cause trouble. Please, do not use any leak-sealing substance within the V-12 cooling system.