Question 1

Front Wings and Headlight Bowls

Accepted Answer

The top of the front wings (fenders) rust badly, especially above the headlights and around the indicator lights. The headlight bowls themselves corrode from the inside. Mud and water sit on the inner splash panels. No factory splash guards means years of damp crud eating through from the inside out. The headlight bowls are mild steel and live in a permanently damp environment. Front wings are bolt-on, so replacement is straightforward. New steel wings are available but pricey; plastic (polyester) reproductions are cheaper and won't rust. Fit Locari-style inner splash screens immediately to prevent it happening again. Headlight bowls can be replaced with cheap plastic items, they work fine and won't rot.

Question 2

Sills (Rocker Panels)

Accepted Answer

The sills rot, badly. All three sections, outer sill, inner sill, and the welded-in reinforcement, corrode together. Water ingress, blocked drain holes, and no factory protection. Once one section goes, the others follow. This is a welding job. Repair sections are available and not expensive, but labour will cost you. If you can't weld, budget accordingly. Check the underside of the front fenders above the sills, that rots too.

Question 3

Chassis Legs and Subframe

Accepted Answer

The front chassis legs (beams) and subframe corrode, particularly where the subframe bolts to the chassis. In extreme cases, engine mounts fail and the engine literally drops. Road salt, moisture, and decades of neglect. The engine bay traps water and dirt. Replace affected sections. This is serious structural work, not a job for beginners. If the chassis legs are Swiss cheese, walk away unless you're committed to a full resto.

Question 4

Doors and Drain Holes

Accepted Answer

Doors rust at the bottom. Hinges sag or seize. Water sits inside the door skin. Volvo only used partial door seals, so water gets in. Blocked drain holes trap it. Hinges corrode and lose strength. Clear the drain holes. Repair or replace the door skins. Hinges can be cleaned, greased, or replaced, seized hinges will bend the door frame if forced.

Question 5

Boot Floor and Spare Wheel Container

Accepted Answer

The boot (trunk) floor and spare wheel well rust through. Fuel tank can corrode or leak. Condensation, leaks from the boot seal, and moisture trapped under the boot mat. Repair sections available. Check the fuel tank itself, if it's leaking or smells of petrol, replacement is not optional.

Question 6

Rear Wheel Arches and Rear Wings

Accepted Answer

Rear wings rust at the wheel arches, the ridged lower section behind the wheel, and the leading edge on top (near the captive nuts). Wheel spray, road salt, and trapped moisture. The ridged section is a dirt trap. Cut out rot and weld in repair panels. Full rear wings are available but not cheap.

Question 7

Windscreen and Window Surrounds

Accepted Answer

Rust around the windscreen and rear window, often hidden under the rubber seal or chrome trim clips. White fog (haze) inside the glass indicates moisture ingress. Failed seals. Water tracks down and rots the metal. Strip the screen, repair the metalwork, refit with new rubber. Not cheap, not quick.

Question 8

B4B Knocking and Wear

Accepted Answer

Hard knocking from the cylinder head when worn. Low gearing means the engine works hard. Age, wear, and the fact that the B4B is the least robust of the PV engines. It's just old tech. Rebuild or replace. Parts for the B4B are becoming scarce and expensive compared to B18.

Question 9

B18 "Dip" at Idle

Accepted Answer

The B18 should have a slight irregular "dip" in revs at idle. If it purrs like a sewing machine, it's worn. Worn valve train, tired piston rings. A healthy B18 has a distinctive lope. Compression test. Rebuild if low. The B18 is robust and well-supported with parts.

Question 10

Oil Leaks (All Engines)

Accepted Answer

Oil weeps from gaskets and seals, common areas include valve cover, front/rear crankshaft seals, oil pan. Old gaskets. Decades of heat cycling. Replace gaskets and seals. Not expensive parts-wise, but some (like the rear main seal) are labour-intensive.

Question 11

Exhaust Smoke

Accepted Answer

Black exhaust = rich mixture or clogged air filter. Blue = burning oil (worn rings/valve seals). White = coolant in combustion chamber. Age-related wear or incorrect tuning. Black: tune carburettor, replace air filter. Blue: rings or valve seals. White: head gasket or worse.

Question 12

Fuel Tank Corrosion

Accepted Answer

The fuel tank rusts, internally or externally. Leaks, smell of petrol in the boot. Age, condensation, ethanol fuel eating old tanks from the inside. Replace the tank. You can get reproduction tanks or have the original re-sealed, but replacement is safer.

Question 13

Carburettor Issues (Zenith, SU)

Accepted Answer

Rough idle, poor starting, flat spots, flooding. Worn jets, dirty passages, incorrect adjustment, perished gaskets. Strip, clean, rebuild. Zenith and SU carbs are well-documented. Rebuild kits available.

Question 14

6V System Dimness and Fragility

Accepted Answer

Lights are pathetically dim. Starter struggles. Bulbs blow frequently. It's a 6V system. That's just how it is. Live with it, or convert to 12V (requires new battery, alternator, bulbs, and re-wiring). Not a simple job.

Question 15

Generator and Charging (6V Cars)

Accepted Answer

Battery goes flat. Generator doesn't charge properly. Worn brushes, dirty commutator, failed regulator. 6V generators are feeble. Rebuild the generator or fit a reproduction. Regulators are available.

Question 16

Single-Circuit Drum Brakes

Accepted Answer

Brakes pull to one side on first application. Pedal feel is spongy or inconsistent. No dual circuit, if the hydraulics fail, you have almost no brakes. Drums don't self-clean like discs. Moisture, dust, and heat affect performance. Single-circuit means one leak = total failure. Adjust regularly. Replace wheel cylinders and brake shoes as needed. Some owners convert to Amazon front discs and dual-circuit master cylinder.

Question 17

Brake Fluid Leaks

Accepted Answer

Wet patches at wheel cylinders, master cylinder, or brake pipes. Perished seals, corroded pipes. Replace wheel cylinders, master cylinder, or brake lines as needed. Do not ignore this.

Question 18

Front Suspension Wear (Coil Springs, Wishbones)

Accepted Answer

Clunking, wandering, uneven tyre wear. Worn bushings, ball joints, or dampers. These are old cars. Replace bushings, ball joints, dampers. Parts readily available.

Question 19

Steering Box Leaks and Wear

Accepted Answer

Play in the steering, leaks from the box, vague steering feel. Worn seals, tired internals. Rebuild or replace the steering box. Check the mounting points on the chassis for rust.

Question 20

Gearbox Wear (M3, M4, M30, M40)

Accepted Answer

Crunchy shifts, jumping out of gear, whining. Worn synchros, tired bearings, low/dirty oil. Change the gearbox oil first. If problems persist, rebuild or replace.

Question 21

Clutch Wear

Accepted Answer

Slipping, juddering, difficult engagement. Worn clutch disc, pressure plate, or release bearing. Replace the clutch. Not expensive parts-wise, but gearbox-out labour.

Question 22

Seat Wear and Discomfort

Accepted Answer

Seats are worn, torn, or simply uncomfortable for long drives. Age. The seats were never brilliant to begin with. Re-upholster or fit later Volvo seats (Amazon, 140). Aftermarket sheepskin covers help.

Question 23

Dashboard and Trim Cracks

Accepted Answer

Dashboard cracks, trim fades or breaks. UV, age, heat. Repair or replace. Some trim parts are scarce now.

PV444 / PV544

PV444 / PV544 known problems