What kind of spark plug does a Jaguar XJ6 use?
Spark plugs are an easy do-it-yourself project on an XJ6 but can be a bit tricky on an XJ12. See the Jaguar Forums to learn about changing V12 spark plugs. Six cylinder spark plugs are easily accessible. Most Jag owners prefer the orignal Champion spark plugs. Other types are acceptable and some owners like platinum plugs.
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.
When to change spark plugs on a Jaguar?
Black, fluffy plugs indicate a mixture problem (too rich) as do near-white plugs (too lean). Black, oily plugs indicate oil in the combustion chambers, from worn rings and such. The distributor cap and rotor should also be changed every 30,000 miles or whenever the contacts show obvious corrosion or burning. Inspect them every 12,000 miles.
Why is there no spark in my ignition?
An ignition module requires some type of external input in order to activate. If your vehicle stalls unexpectedly during operation and will not start again, it is likely because of loose or corroded electrical connections in the ignition module. In this case, check the switch, clean oxidized terminals, and replace broken wires if necessary.
Spark plugs are an easy do-it-yourself project on an XJ6 but can be a bit tricky on an XJ12. See the Jaguar Forums to learn about changing V12 spark plugs. Six cylinder spark plugs are easily accessible. Most Jag owners prefer the orignal Champion spark plugs. Other types are acceptable and some owners like platinum plugs.
Black, fluffy plugs indicate a mixture problem (too rich) as do near-white plugs (too lean). Black, oily plugs indicate oil in the combustion chambers, from worn rings and such. The distributor cap and rotor should also be changed every 30,000 miles or whenever the contacts show obvious corrosion or burning. Inspect them every 12,000 miles.
What is the Bosch number on a 6 cylinder Jaguar?
For 6 cylinder cars use Champion N12YC (merchandising number 404). The NGK number is BP5ES (or GR4), and the Bosch number is WR8DC. Gap in all instances is .035″.
What is the gap on a Bosch spark plug?
The NGK number is BP5ES (or GR4), and the Bosch number is WR8DC. Gap in all instances is .035″. I am not sure what sparkplugs are correct for the V12 engines so I’ll remain silent on the topic.
Where are the ECU connectors on a Jaguar XJ6?
It is worrying to discover that Jaguar thoughtfully placed both ECU connectors on top of the ECU to ensure that any water would run down into the connector.
How do you unlock a Jaguar XJ6 S3?
Grounded through solenoid body Boot/Trunk locks only but can be wired to unlock by adding a 2mmsq cable as shown in green Thermal breaker OR OR OG Backlight Warning Lamp Control Switch Delay Unit Fuse 12 To Ignition switch protection Relay 9 Jaguar XJ6 S3 Small item Schematic
Where are the wires on a Jaguar XJ6?
Shorted or broken wires on this loom is not uncommon, as the locations of these few wires are located under the water manifold and right next to the engine. This is obviously a place where engine heat is trapped and can run very high.
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 kind of engine does a Jaguar XJ6 have?
Models covered Jaguar XJ6 models with 3.2 litre (3239 cc), 3.6 litre (3590 cc) & 4.0 litre (3980 cc) six-cylinder in-line dohc petrol engines and automatic transmission
Grounded through solenoid body Boot/Trunk locks only but can be wired to unlock by adding a 2mmsq cable as shown in green Thermal breaker OR OR OG Backlight Warning Lamp Control Switch Delay Unit Fuse 12 To Ignition switch protection Relay 9 Jaguar XJ6 S3 Small item Schematic
How big should the intake valve be on a Jaguar XJ6?
It is possible to increase the valve size to 1-15/16 inches without changing the size of the spark plug. If you go to a 2 inch intake valve you will have to change to a 10 mm spark plug. You should not go to a 2 inch valve unless you are seriously racing the car.
What kind of transmission does a Jaguar XJ6 have?
Jaguar XJ6 Service and Repair Manual 3261 Jaguar XJ6 Models covered Jaguar XJ6 models with 3.2 litre (3239 cc), 3.6 litre (3590 cc) & 4.0 litre (3980 cc) six-cylinder in-line dohc petrol engines and automatic transmission
What should I do to my Jaguar XJ6?
Porting and polishing will make the biggest single difference on the heads of an XJ6. You have two levels that you can aspire to in porting and polishing. The first level is to just smooth out the intake ports so that they are smooth and without lumps and casting imperfections in the walls. Finish the job with 80 to 100 grit sanding drums.
What to do if your Jaguar has no spark?
If no spark, see step 3. If you DO have spark here then you have a faulty cap and/or rotor (spark is getting to the distributor cap but not getting to the sparkplugs). Remove the distributor cap and peek inside. Look for a burned center terminal, burned terminals to the plugs, cracks, or carbon tracks between the terminals.
When did the Jaguar XJ6 start and run?
I now want to tell everyone how to make the Jaguar XJ6 manufactured from the early 1970s through the early 1980s start and run. I had previously not wanted to tell very many people, so that the price of these cars would continue to stay very low, and I would be able to buy many more of them, hoard them for myself, and save them.
What kind of ignition system does Jaguar XJ-S use?
Three ingition systems have been used on the Jaguar XJ-S: the Lucas Opus Mark 2 system on non-H.E. engines prior to 1982; the Lucas ignition on H.E. engines 1982 to 1989; and finally the Marelli ignition on post-1989 cars. An ignition coil requires a certain amount of time to build up enough energy to produce a spark.
If no spark, see step 3. If you DO have spark here then you have a faulty cap and/or rotor (spark is getting to the distributor cap but not getting to the sparkplugs). Remove the distributor cap and peek inside. Look for a burned center terminal, burned terminals to the plugs, cracks, or carbon tracks between the terminals.
Where is the transmission on a Jaguar XJ6?
Transmissions are a four-speed automatic equipped with a lock-up torque converter. The transmission is mounted to the back of the engine, and power is transmitted to the fully independent rear axle through a two-piece propshaft.
For 6 cylinder cars use Champion N12YC (merchandising number 404). The NGK number is BP5ES (or GR4), and the Bosch number is WR8DC. Gap in all instances is .035″.
Why is the plug on my Jaguar XK8 not coming out?
When you attempt to remove the cover you may come across a bolt that will turn but not come loose. This is due to the nut coming loose and you may need to apply a little pressure from behind to get it out. After removing the coil pack check it to see if you have oil in the cylinder with the plug.
Transmissions are a four-speed automatic equipped with a lock-up torque converter. The transmission is mounted to the back of the engine, and power is transmitted to the fully independent rear axle through a two-piece propshaft.
Where is the fuel supply hose on a Jaguar?
Disconnect fuel supply hose at the fuel rail (at the rear of later “straight rail” cars and at the bottom of the early “loop style” rails). Some fuel may spill, have rags and container handy. A properly operating pump will produce about 34 PSI so, again, be ready ! Position fuel hose so fuel will flow into the container.
Where does the power come from on a Jaguar?
3) If you don’t have spark at the coil wire-to-distributor cap, then check for power getting to the ignition coil. Power here comes directly from the ignition switch via a white wire. If you have a ballast resistor, the wire will go there first.