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Fitting Guide | Midland Turbo
Fitting GuideAlways establish the cause of failure before fitting a replacement unit.
The 6 most common failures are:


1. Oil starvation 2. Oil contamination 3. Impact damage 4. Blocked Engine breather 5. Over speeding of shaft and wheel 6. Hot shut down

Remove oil feed pipe and all associated banjo bolts and restrictors. Inspect for damage/blockage before refitting. Check there is a good clean oil feed to the turbo and that the flow and pressure is correct (recommend new oil feed pipe to be fitted) (especially if the pipe runs close to heat source) prime turbocharger before running engine.

Check all induction piping/airfilter box and airfilter are free from debris and that the turbine nut from the previous failure in not present.

Check there is a good clean oil feed to the turbo and that the flow and pressure is correct. We recommend new oil feed pipe to be fitted, especially if the pipe runs close to a heat source. Prime turbocharger before running engine.

Check engine breather and associated valves are working correctly and are free from debris.

Check oil drain pipe to sump is not blocked, restricted or damaged.

Do not use any type of sealer on any of the oil inlet and outlet connections to the turbocharger, also turbine inlet and outlet flanges.

Inspect EGR valve for correct operation.

Check ECU to manufacturers specifications and all associated boost control valves/pipes for correct operation.

Change oil and oil filter with correct type and grade of oil (refer to manufacturers specifications). It is very important not to overfill. (Modern engines are very slow fillers).

Check boost pressure does not exceed manufacturers limits.

Do not fit a replacement turbo to a worn engine.

It is advisable to let the engine idle for 45 seconds before switching engine off if it is driven hard to prevent bearing damage.

On certain Audi/VW applications the rocker cover should be replaced if the turbocharger compressor wheel has failed due to overspeed or debris damage. Particles can find it's way into the rocker cover breather. The design of this cover does not allow access to clean.

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We distribute, remanufacture and repair the following makes of turbochargers:

  • Garrett
  • BorgWarner
  • Mitsubishi
  • Toyota
  • IHI
  • Holset
  • Schwitzer
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