Vehicles using 13B-REW engine list:

Engine 13B-REW

Symptoms:
- Loss of power or turbo lag
- Excessive smoke from exhaust (blue or white)
- Overheating or coolant loss
- Rough idling or misfires
- Oil leaks around the engine bay

Diagnosis:
- Check for worn or damaged apex seals causing compression loss
- Inspect turbochargers for shaft play or boost leaks
- Examine vacuum lines and intercooler piping for cracks or disconnections
- Perform a compression test to assess rotor seal health
- Inspect cooling system components for leaks or blockages
- Look for oil leaks at the rear main seal and oil cooler lines

Fixes:
- Replace apex seals and rotor seals if compression is low
- Rebuild or replace turbochargers showing wear or boost issues
- Repair or replace damaged vacuum lines and intercooler hoses
- Flush and refill cooling system; replace faulty thermostat or radiator if overheating persists
- Replace worn gaskets and seals to stop oil leaks
- Regularly change engine oil with high-quality synthetic to maintain lubrication

Prevention:
- Use high-quality synthetic oil and change it frequently (every 3,000–5,000 miles)
- Warm up the engine properly before hard driving to protect apex seals and turbochargers
- Avoid prolonged idling and allow the turbo to cool down after spirited driving
- Regularly inspect and maintain cooling system components to prevent overheating
- Monitor boost pressure and address any irregularities immediately
- Keep vacuum and intercooler lines in good condition to maintain proper boost and air flow

The 13B-REW is a high-performance rotary engine that requires diligent maintenance to avoid common issues like apex seal wear and turbocharger problems. Proper care and timely repairs will ensure reliable performance in the Mazda RX-7 Twin Turbo.