Intake & Exhaust Components Engine Intake & Exhaust Systems Intake & Exhaust Components After/Inner Cooler Intake Manifold Air to Air or Intake Valve Coolant to Air Turbocharger Exhaust Valve Intake Restriction Indicator Air filter Exhaust Manifold How it all Works together Renault M9R Diesel Engine

Air to Air Aftercooler operation Engine Intake & Exhaust Systems Air to Air Aftercooler operation Heat exchanger cools and condenses the intake air.

Air to Air Aftercooler operation Engine Intake & Exhaust Systems Air to Air Aftercooler operation Heat exchanger cools and condenses the intake air.

Air to Air Aftercooler operation Engine Intake & Exhaust Systems Air to Air Aftercooler operation Heat exchanger cools and condenses the intake air.

Air to Air Aftercooler operation Engine Intake & Exhaust Systems Air to Air Aftercooler operation Heat exchanger cools and condenses the intake air.

Air to Air Aftercooler operation Engine Intake & Exhaust Systems Air to Air Aftercooler operation Heat exchanger cools and condenses the intake air.

Water to Air Aftercooler operation Engine Intake & Exhaust Systems Water to Air Aftercooler operation Engine Coolant out 190 F 300 F 195 F 180 F Engine Coolant in Heat exchanger cools and condenses the intake air.

Turbochargers and Roots Blower Engine Intake & Exhaust Systems Turbochargers and Roots Blower (Air Pumps) Turbine (Exhaust Side) Bearing Section Compressor (Intake Side) Roots Blower Gear or Belt Driven Turbocharger Driven by Engine Exhaust

Turbocharger Air Flow Out to engine In from Air Cleaner Out to exhaust Intake & Exhaust Systems Out to engine Pressure oil to lube bearings In from Air Cleaner Out to exhaust Oil drain back to oil pan In from engine

Engine Intake & Exhaust Systems Turbocharger Waste Gate: limits amount of boost by “dumping” exhaust gasses.

Dry or Cartridge Air Cleaner Engine Intake & Exhaust Systems Air Filters Oil Bath Type Found on Vintage Equipment Dry or Cartridge Air Cleaner Filter Media Dust is trapped by oil in bottom of filter Dust Unloading Valve

Air Cleaner Restriction Indicator Engine Intake & Exhaust Systems Air Cleaner Restriction Indicator Click to show increased filter restriction Push this button to reset

Particulate Matter Filter Engine Intake & Exhaust Systems Exhaust System Rain Cap Particulate Matter Filter Muffler Exhaust Pipe

White Smoke white smoke White Exhaust Smoke consists of a large number of particles of fuel oil larger than 1.0 microns in diameter. This indicates that the “Fuel is not Burning.”

POSSIBLE CAUSES White Smoke 1) faulty ignition pump 2) too high injection pressure or faulty injection 3) improper grade/delivery of fuel 4) incorrect engine value timing 5) engine overheating or too cold, coolant entering combustion chamber and/or water in fuel 6) high exhaust back pressure

POSSIBLE REMEDY White Smoke 1) set injection timing 2) check emission system operation 3) check fuel injection pump calibration 4) check injection nozzles 5) check fuel being used 6) check engine valve timing 7) check cooling system for overheating, head gasket leakage, and/or fuel tank and filters 8) check exhaust back pressure

Blue Smoke blue Blue smoke consists of a large number of fuel oil particles about 0.5 microns in diameter or less. These particles are recondensed droplets of unburned fuel or incompletely burned fuel. This indicates that the engine burns excessive oil; and/or indication of “Lubricating Oil” being burned.

POSSIBLE CAUSES Blue Smoke 1) engine crankcase oil level too high 2) wrong grade/type of fuel 3) oil level in air cleaner too high 4) air cleaner oil too light in viscosity 5) worn piston rings, valve guides or cylinders 6) turbocharger/blower defective

POSSIBLE REMEDYS Blue Smoke 1) check oil in crankcase and air cleaner 2) try another grade of fuel 3) perform compression test 4) check rings and/or valve seals 5) check turbocharger/blower

Black or Gray Smoke smokey Black or Gray Smoke consists of particles of carbon formed when fuel is heated in oxygen lean regions in the combustion chamber. Part of the fuel in the chamber is not being ignited or burned.

POSSIBLE CAUSES Black or Gray Smoke 1) faulty injection pump timing 2) too high injection pressure or faulty injection nozzles 3) clogged or damaged air intake filter 4) improper grade/delivery of fuel 5) incorrect engine valve timing 6) engine overheating 7) high exhaust back pressure 8) poor cylinder compression

POSSIBLE REMEDYS Black or Gray Smoke 1) set injection pump timing 2) check emission system operation 3) check fuel injection pump 4) check injection nozzles 5) check fuel being used

MORE POSSIBLE REMEDYS Black or Gray Smoke 6) check engine valve timing 7) check cooling system for overheating 8) check air intake filter 9) check exhaust back pressure 10) check compression

compression check