Do you need an ECU upgrade for a XJ12?
Modification of the fuel ECU is necessary to suit the improved engine breathing and is included in the price. The SE ECU upgrade can be also added at a favourable price. The TT System is available as the basic front section for the XJS or XJ12 if the existing over-axle pipes and rear silencers are in good condition.
Are there any problems with the Jaguar XJ12?
As with most vehicles, Jaguar XJ12 also has its set of problems that can often put car owners into a troublesome situation. When this happens, getting an Expert’s help to restore working order becomes highly essential.
How to increase the performance of a Jaguar V12 engine?
A brief guide to cost effective ways of increasing the performance of the Jaguar v12 engine 1 Replacing the Early Four Carburettors of the V12 E Type (or XJ12) with Electronic Fuel Injection. 2 Upgrading the Fuel Injection System. The Super Enhanced ECU Upgrade. 3 Upgrading the Induction System.
What to do if your Jaguar XJ6 won’t start?
If your XJ6 or XJ12 won’t start, grab your voltmeter and follow this checklist. Covers checking spark plugs, coil, wires and distributor cap, ballast resistor, amplifier and distributor pick-up, fuel supply, fuel pump and relay, air flow meter, fuel injectors and ECU.
What are the systems in a Jaguar XJ12?
Breaking it down a bit, there are six main systems in that spaghetti; fuel, vacuum, engine management, ignition, cooling system and air con. I will take a typical S3 XJ12 as an example, then go over differences on other models later.
Why are Jaguar XJ6 and XJ12 not worth more?
The V-12 is more difficult to maintain, and overheating issues were exacerbated by catalytic converters raising under-hood temperatures to crematorium levels. Rubber fuel hoses in the V never stood a chance. Ray Nierlich is a lifetime Jaguar expert, and has been Dr. Jaguar in Newport Beach for 25 years.
Is the Jaguar V12 a good car to buy?
The good news is that the engine itself is very reliable and can cope with a huge amount of abuse, the bad news is that because of this many older cars have many missed services, giving the new owner quite a lot to do.
If your XJ6 or XJ12 won’t start, grab your voltmeter and follow this checklist. Covers checking spark plugs, coil, wires and distributor cap, ballast resistor, amplifier and distributor pick-up, fuel supply, fuel pump and relay, air flow meter, fuel injectors and ECU.