Hyundai Coupe RD

Sporty Beta engine with 16V head. Likes to rev, stays reliable — a natural fit for compact sporty models.

• !! Timing belt failure — valve damage from 60,000 km

  The Beta G4GR has a timing belt with a 60,000 km service interval. If it fails, the valves bend. The belt does not always last to 60,000 km on some examples.

  Symptoms: Sudden engine stop without warning; engine will no longer start; no compression.
  300–700 $
  Ad G4GR timing beltBeta 1.6 timing belt Hyundai ElantraG4GR timing kit water pump
• !! Oil seal ageing leaks from 120,000 km

  Older Delta V6 engines tend to oil leaks at valve cover gaskets and camshaft seals at high mileage. Complex disassembly due to tight V6 installation.

  Symptoms: Oil stains under the vehicle, oil smell in the engine bay, dropping oil level, smoke from hot exhaust manifold.
  200–700 $
  Ad G4GR valve cover gasket2.7 V6 Delta valve cover gasketG4GR oil gasket
• !! Valve stem seal oil consumption from 130,000 km

  Beta engines frequently show oil consumption from worn valve stem seals and piston rings at higher mileage. Typical symptom: blue smoke when cold.

  Symptoms: Blue smoke on cold start; elevated oil consumption; oil mist from crankcase ventilation.
  400–900 $
  Ad G4GR valve stem sealsBeta 1.6 valve stem seals

+ 2 more engine weaknesses + vehicle weaknesses

Beta-era stalwart with 16V head. Simple, cheap to service, gets the job done.

• !! Timing belt maintenance interval from 70,000 km

  Beta II 1.6 engine with timing belt drive. Change interval every 60,000–80,000 km recommended. Interference engine: belt failure = immediate engine damage. Always check on older vehicles.

  Symptoms: No direct symptom. Squealing just before failure; then sudden engine stop.
  250–650 $
  Ad G4GF timing beltBeta II 1.6 timing belt Accent
• !! Timing belt failure — engine damage from 60,000 km

  The Beta G4GF is an interference engine with timing belt drive. If the belt breaks after a neglected service interval (60,000 km), the valves bend. Frequently discussed in Sonata/Elantra forums.

  Symptoms: Sudden engine stop; no compression; will not restart; loud crunching sound on failure.
  350–700 $
  Ad G4GF timing belt kitBeta 2.0 timing belt ElantraG4GF timing belt water pump
• !! Valve stem seals — oil consumption when cold from 130,000 km

  The Beta 2.0 develops oil consumption from worn valve stem seals at higher mileage. Typical blue smoke on cold start that disappears after warm-up.

  Symptoms: Blue smoke on first cold start; oil smell from the exhaust; oil consumption 0.5–1 L/1,000 km.
  400–1,000 $
  Ad G4GF valve stem sealsBeta 2.0 valve stem sealsHyundai Elantra valve seals

+ 2 more engine weaknesses + vehicle weaknesses