Question 1

Structural floor pan corrosion

Accepted Answer

Floor pans rot through, usually starting from the inside where moisture sits under the carpet and sound deadening. The car loses rigidity, doors stop closing properly, scuttle shake increases, the windscreen cracks. The monocoque relies on the floors for structural integrity. Jaguar's rust protection was essentially "paint it and hope." Water gets in through door seals, drain holes that block, and windscreen rubbers that fail. Australian cars fare better than UK examples, but nowhere is immune. Cut out the rot, fabricate or buy replacement floor sections, and weld them in. This is major surgery, the car needs to be on a jig to maintain alignment. Budget $8,000-15,000 AUD for professional floor repairs, more if the inner sills and bulkhead are involved. DIY is possible if you're a competent welder, but alignment is critical.

Question 2

Sill corrosion (inner and outer)

Accepted Answer

Sills collapse, doors sag, the car visibly droops in the middle. Outer sills may look fine while the inner sections are completely gone. Water sits inside the sill box sections. Drain holes block with debris. The inner sill is hidden behind trim and carpet, so rot goes undetected for years. Inner and outer sill replacement. The car needs to be supported properly during the work to prevent the shell from distorting. Replacement panels are available from SNG Barratt and Martin Robey. A full sill replacement on both sides runs $5,000-10,000 AUD professionally.

Question 3

Bonnet corrosion and distortion

Accepted Answer

The enormous forward-hinged bonnet develops rust in its seams, inner structure, and around the headlight openings. It can also distort if the car has been jacked incorrectly or been in a minor shunt. The bonnet is a complex multi-piece assembly with lots of seams where water sits. It's also thin-gauge steel that's vulnerable to stone chips and abrasion. The sheer weight of the thing stresses hinges and mounts. Minor rust can be cut out and repaired. Major corrosion or distortion usually means a replacement bonnet, $15,000-25,000 AUD for a quality reproduction, plus paint. Alignment after fitting is an art form. Bonnet hinges and the tilt mechanism should be inspected and rebuilt at the same time.

Question 4

Boot floor and rear end corrosion

Accepted Answer

The boot floor rots, the spare wheel well fills with water, and corrosion spreads to the rear inner wings and battery tray area. Blocked drain holes, failed boot seal, poor design that traps water. Battery acid leaking onto metalwork accelerates the problem. Cut and replace the affected panels. Boot floors are available as reproduction parts. Check the battery tray area carefully, acid damage is insidious.

Question 5

Bulkhead and scuttle rot

Accepted Answer

The joint between the bonnet section and the cabin, the scuttle, rots. Water leaks into the cabin, the windscreen frame weakens, and eventually the whole front of the car becomes loose. Failed windscreen rubbers, blocked drainage, standing water in the scuttle area. This is one of the hardest areas to inspect and one of the most expensive to repair. Major structural repair requiring the windscreen to come out. The scuttle area needs cutting, fabrication, and welding. This is specialist work, get quotes before buying a car with scuttle rot.

Question 6

XK engine oil leaks

Accepted Answer

Oil weeps from every gasket and seal, cam covers, timing cover, rear main seal, sump gasket. Most E-Types leave marks wherever they park. The XK engine was designed in the 1940s with rope seals and cork gaskets. Modern sealants help, but the casting surfaces are rough and it's nearly impossible to get them completely dry. Replace gaskets and seals methodically. Start with the cam covers (easy, cheap) and work down. The rear main seal requires gearbox removal. Accept that a small weep is normal, you're aiming for "doesn't drip on the garage floor," not "operating theatre clean."

Question 7

Cooling system inadequacy (six-cylinder)

Accepted Answer

Engine runs hot, especially in traffic or on warm days. Temperature gauge climbs past the middle mark, car starts to smell hot, coolant may boil over. The E-Type's cooling system was marginal when new and relied on forward motion pushing air through the radiator. In Australian summer conditions, sitting in traffic is a recipe for overheating. Thermostats fail, water pumps wear, radiators clog with scale, and fans don't move enough air. Fit an upgraded aluminium radiator with increased capacity. Upgrade to an electric fan (or add one in addition to the viscous coupling fan). Ensure the thermostat is working correctly and coolant is fresh. Check water pump flow, a worn impeller moves less coolant than you'd think. These upgrades are well-documented and essential for Australian ownership.

Question 8

V12 overheating (Series 3)

Accepted Answer

The same as above, but worse. The V12 generates substantially more heat and the cooling system, despite being larger than the six-cylinder setup, is still barely adequate. The V12 has a complex cooling system with multiple hoses, a header tank, twin thermostats, and multiple electric fans. Any failure in this chain leads to overheating. Header tanks develop cracks. Hoses perish internally and collapse. Fan relays fail silently. Comprehensive cooling system overhaul: new radiator (aluminium upgrade), new hoses throughout, new thermostats, rebuild or replace the header tank, check fan operation and relay health. Budget $3,000-5,000 AUD for a complete cooling system refresh on a V12. It's non-negotiable.

Question 9

V12 head gasket failure

Accepted Answer

Coolant loss with no external leak, white smoke from one bank of exhaust, mayonnaise under the oil filler cap, overheating. The V12's head gaskets weep over time, especially if the engine has been overheated at any point. The long block with its two heads creates significant thermal cycling stress. Both heads need to come off (you'd be mad to do just one). Heads get pressure-tested, skimmed if warped, and new gaskets fitted. This is a major job, 30-40 hours of labour plus parts. Budget $8,000-15,000 AUD at a specialist.

Question 10

SU carburettor synchronisation issues

Accepted Answer

Rough idle, flat spots during acceleration, poor fuel economy, backfiring. The car runs badly and smells of petrol. The Series 1 3.8 cars have three SU HD8 carburettors that need to be synchronised perfectly. Even the twin-SU setup on 4.2 cars is sensitive to maladjustment. Jets wear, needles wear, float heights drift, and diaphragms split. Most mechanics don't understand SUs properly and make things worse. Strip, clean, rebuild all carbs. Replace needles and jets. Set float heights. Synchronise with a proper flow meter (not just by ear). A triple-SU setup done properly is a thing of beauty, but it takes patience and experience. Budget $500-1,000 for rebuild kits for a triple-SU setup.

Question 11

Timing chain stretch and tensioner wear

Accepted Answer

Rattling from the front of the engine on startup that may or may not settle when warm. In severe cases, the chain can jump a tooth, causing valve timing issues or valve-to-piston contact. The duplex timing chain stretches over high mileages. The tensioner wears and loses its ability to take up slack. Replace the timing chain, tensioner, and sprockets. It's a front-of-engine job, not a weekend task but not catastrophic either. Budget $1,500-3,000 AUD including parts and labour.

Question 12

Moss gearbox issues (early 3.8 cars)

Accepted Answer

No synchromesh on first gear (by design), crunching into second, difficulty selecting gears when cold. General agricultural feel. The Moss box is an old design. First gear was never synchromeshed. The synchros on second and third wear over time. The gearbox oil must be correct grade, too thick and it won't shift, too thin and the synchros suffer. Learn to double-declutch into first. If synchros are worn, the box needs a rebuild, $3,000-5,000 AUD. Some owners fit the later all-synchro box, but this requires a different bellhousing and is a significant conversion.

Question 13

Rear differential and hub bearing wear

Accepted Answer

Whining from the rear end, clunking on direction changes, vibration at speed. In extreme cases, the output shaft bearings fail and the halfshaft comes loose. The E-Type uses an independent rear suspension with the differential and inboard disc brakes as a single unit. It's heavy, complex, and the bearings take a hammering. Low oil level or incorrect grade accelerates wear. Check diff oil level first. Top up with the correct grade (hypoid 90). If it's still noisy, the diff needs a rebuild, bearings, seals, possibly a new crown wheel and pinion. The entire rear subframe usually comes out for this work. Budget $5,000-8,000 AUD.

Question 14

Clutch hydraulics failure

Accepted Answer

Clutch pedal goes to the floor, won't return. Difficulty engaging gears or car creeps in gear with the clutch pressed. Clutch master and slave cylinders leak or seize. The hydraulic lines corrode. Brake fluid absorbs moisture and causes internal corrosion. Replace master and slave cylinders, stainless steel bore units are available and last much longer than original. Replace all hydraulic lines. Bleed the system thoroughly. Budget $500-1,000 AUD in parts.

Question 15

Lucas electrics, general failure

Accepted Answer

Random failures of lights, indicators, wipers, gauges, starter motor, charging system. Intermittent faults that defy diagnosis. Components that work when tested but fail on the road. Lucas was the sole supplier of electrical components to British car manufacturers. Their products were acceptable when new but aged poorly. Bullet connectors corrode, earth points go resistive, wiring insulation becomes brittle and cracks, switches wear internally. Decades of bodge repairs compound every problem. Systematic approach: clean every earth point, replace corroded connectors, test every circuit, replace failed components. A complete rewire with a modern harness (Autosparks, YNZ) is the definitive solution, $3,000-5,000 AUD for the loom plus installation. It transforms the car's reliability.

Question 16

Generator/alternator and voltage regulator failure

Accepted Answer

Battery goes flat, warning light stays on, instruments dim at idle. Early cars had Lucas generators (dynamos) with separate voltage regulators. Both fail with age. Later cars have alternators, which are better but still fail. Test output at the generator/alternator terminals. Replace the voltage regulator first (cheap). If the generator is shot, convert to a modern alternator, kits are available and it's a worthwhile upgrade. Budget $500-1,000 AUD.

Question 17

Ignition system problems

Accepted Answer

Misfiring, hard starting, poor running at certain RPMs, engine cutting out. Points, condenser, distributor cap, rotor arm, coil, HT leads, all wear and fail. The V12 has two distributors and twice the failure points. Moisture gets into the distributor and causes misfires in damp conditions. Fit an electronic ignition conversion (Pertronix, Lumenition, or similar). It's one of the best modifications you can make, more reliable ignition, better starting, smoother running, less maintenance. Costs $200-400 AUD and takes an hour to fit. Keep the original points distributor in the boot as a spare.

Question 18

Radiator deterioration

Accepted Answer

Slow coolant loss, visible green staining around the radiator, overheating at speed or in traffic. Original brass/copper radiators develop pinhole leaks in the core. Header tanks develop cracks. Solder joints fail. Internal scale reduces efficiency. Recore or replace. An aluminium replacement radiator with increased capacity is the smart move for Australian conditions. Budget $800-1,500 AUD for a quality aluminium unit.

Question 19

Heater valve and matrix leaks

Accepted Answer

Coolant smell in the cabin, damp carpets, fogged windscreen, coolant loss. The heater matrix and its control valve develop leaks from age and corrosion. The matrix is buried behind the dashboard. Heater valve replacement is relatively easy. Heater matrix replacement requires significant dashboard disassembly, budget a full day. Replacement matrices are available. Some owners bypass the heater circuit in summer and accept cold cabins in winter.

Question 20

Front wishbone bush wear

Accepted Answer

Clonking over bumps, vague steering, uneven tyre wear, the car wanders at speed. Rubber bushes harden and crack with age. The front suspension uses upper and lower wishbones with multiple bush points, all of which wear. Replace the bushes. Polyurethane upgrades are available and last much longer than rubber. A front suspension bush kit runs $300-600 AUD in parts. Labour is additional but straightforward.

Question 21

Rear suspension knuckle joint wear

Accepted Answer

Knocking from the rear on bumps or direction changes, unpredictable handling at the rear. The independent rear suspension uses lower wishbones with inner fulcrum shafts and bearings that wear. The design is clever but maintenance-intensive. Strip and rebuild the rear suspension. Replace all bearings, bushes, and seals. This is best done with the entire rear subframe removed. Budget $3,000-6,000 AUD for a comprehensive rear suspension rebuild.

Question 22

Steering rack wear

Accepted Answer

Play in the steering, vague centre feel, clonking when turning, fluid leaks (on power steering cars). The rack and pinion wears over time. Power steering seals fail and leak. Mounting bushes deteriorate. Adjust or replace the rack. Reconditioned racks are available. Power steering systems need seal replacement and fluid change. Budget $1,500-3,000 AUD for a reconditioned rack fitted.

Question 23

Inboard rear disc brake issues (Series 1 and 2)

Accepted Answer

Poor rear braking, grinding noises, excessive pedal travel, uneven braking. Heat soak from the differential oil can boil brake fluid. The inboard rear discs sit next to the differential and run hot. The calipers seize, pads glaze, and the whole system is harder to service than conventional outboard brakes. Heat from the diff degrades brake fluid. Rebuild or replace the rear calipers. Fit new pads and discs. Use high-temperature brake fluid (DOT 5.1 or silicone DOT 5). Ensure the handbrake mechanism is free and adjusted. Budget $1,500-3,000 AUD for a rear brake rebuild.

Question 24

Brake servo failure

Accepted Answer

Very hard brake pedal, poor braking performance, the car feels like it has no brakes. The brake servo (vacuum booster) fails internally, diaphragm splits, check valve sticks, vacuum line leaks. Rebuild or replace the servo. Reconditioned units are available from specialists. Check the vacuum line and check valve at the same time. Budget $500-1,000 AUD.

S-Type (1963)

S-Type (1963) known problems