PV444 / PV544

1947-1965 / Sedan / Sweden

All PV444 / PV544 problems All workshop issues

Common Engine and Drivetrain

B18 "Dip" at Idle

Symptoms

The B18 should have a slight irregular "dip" in revs at idle. If it purrs like a sewing machine, it's worn.

Cause

Worn valve train, tired piston rings. A healthy B18 has a distinctive lope.

Fix

Compression test.

Rebuild if low.

The B18 is robust and well-supported with parts.

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Other known issues

Common Engine and Drivetrain

B4B Knocking and Wear

Hard knocking from the cylinder head when worn. Low gearing means the engine works hard.

Common Engine and Drivetrain

Oil Leaks (All Engines)

Oil weeps from gaskets and seals, common areas include valve cover, front/rear crankshaft seals, oil pan.

Critical Engine and Drivetrain

Exhaust Smoke

Black exhaust = rich mixture or clogged air filter. Blue = burning oil (worn rings/valve seals). White = coolant in combustion chamber.

Common Body and Rust

Front Wings and Headlight Bowls

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.

Critical Body and Rust

Sills (Rocker Panels)

The sills rot, badly. All three sections, outer sill, inner sill, and the welded-in reinforcement, corrode together.

Critical Body and Rust

Chassis Legs and Subframe

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.

View all 23 PV444 / PV544 problems