Ford VB Engine

• Excessive oil consumption, light blue smoky exhaust
  Cause: Sludged rings, excessive bearing clearances, piston skirt collapsed, worn intake-valve guides
  Fix: Replace worn parts
• Low oil pressure
  Cause: Oil too light
  Fix: Drain, refill with proper oil
• Engine will not start when cranked
  Cause: Faulty ignition
  Fix: Clean, adjust, or replace breaker points, plugs, condenser, coil, etc., retime ignition
• Engine misfires at all loads
  Cause: Fouled spark plugs
  Fix: Clean and adjust
• Pinging sound when engine is rapidly accelerated or heavily loaded
  Cause: Carbon in cylinders
  Fix: Remove carbon
• Engine backfires at carburetor
  Cause: Lean fuel mixture
  Fix: Clean or adjust carburetor
• Engine overheating
  Cause: Low water in radiator
  Fix: Refill radiator
• Engine misfires at light load
  Cause: Carburetor idle adjustment set wrong or clogged
  Fix: Adjust, clean if needed
• Engine misfires at heavy load
  Cause: Spark plugs defective
  Fix: Replace
• Engine lacks power
  Cause: Poor compression
  Fix: Tighten cylinder head and spark plugs; If still not corrected, grind the valves; Replace piston rings, if necessary
• Engine cranks too stiffly
  Cause: Corroded terminals
  Fix: Clean and tighten terminals
• Starter will not crank engine
  Cause: Discharged battery
  Fix: Test and recharge or replace battery
• Light pounding knock
  Cause: Loose connecting rod bearing
  Fix: Replace
• High oil pressure
  Cause: Oil too heavy
  Fix: Drain, refill with proper oil
• Engine stops unexpectedly
  Cause: Fuel tank empty
  Fix: Refill

Compiled from service & troubleshooting documentation across every generator set that uses the Ford VB.

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.