The turbo (turbo):The turbo is a turbine driven by exhaust gas that returns the gas compressed in the inlet. It allows to boost engine power.
When to change the turbo?Several cases may be involved in a turbo problem. A lack of engine power, excessive smoke, high fuel consumption, overheating, exhaust temperature is too high, leakage of oil from the turbocharger can be symptoms attributable to the turbocharger. We must then verify the origin of symptoms.
The turbo engine
The turbocharger is a mechanical part annex to the engine for increasing gas pressure allowed, allowing better filling of cylinders in air. The turbo is compatible with internal combustion engines or compression ignition (diesel). Is the compression of gas exhaust , which can rotate the turbine.
The turbocharger comprises a turbine and a compressor. The turbine is driven by the gas exhaust , it drives the compressor that compresses air under pressure to the engine intake. For most turbochargers, they are composed of:
- An air filter
- A cartridge air filter
- An inlet air to the turbocharger with its O
- An upper level of oil
- A cover oil filter
- An oil pan
- A turbocharger
- A sleeve lubrication of the turbocharger, two hollow bolts and gaskets.
- An oil return line with its attached
- 2 seals of the turbo compressor
There are several types of turbo different quality. The advantages are numerous. For a 150 hp 2-liter engine, a turbocharger can develop over 200 hp. The car then has acceleration and overall power of lightning. The counterpart is that the engine is pushed to its limits and you have to do a thorough review of the engine.
Maximize the life of a turbo
It is possible to optimize the life of the turbo. You should know that turbo starts to operate only from a certain engine speed. Having a turbo on his car requires meticulous maintenance. To optimize your vehicle. There must be a warming up before using the vehicle. Before switching off, you must let it run a while the engine idling. For it is oil pump that allows the lubrication of the axis of rotation of the turbine. Excluding the oil pump is driven by the engine, thus preventing an engine off the oil to lubricate properly turbine of the turbocharger compressor. We must therefore wait a few minutes to idle before turning off the engine.
When replacing a turbocharger?
It is not necessarily always have to replace a turbo. Sometimes just a simple repair. Some symptoms may be due from the compressor, but the failure may come from elsewhere. The key symptoms you may experience with the possible causes.
You notice a lack of engine power.
This failure may be because:
- A dirty air filter should be replaced or cleaned.
- A restricted air duct of the compressor to the intake manifold. It must then remove the restrictions and replace damaged parts.
- A restriction in the intake manifold. Eliminate restrictions and replace damaged parts.
- On an air leak in the supply air compressor to the intake manifold. Replace the seals or strengthen ties.
- On an air leak between the intake manifold and engine. Replace seals, gaskets or strengthen ties.
- A foreign body in the exhaust manifold. Remove the foreign body and refer to the manufacturer’s handbook.
- A restricted exhaust system. Remove the obstructing parts and replace damaged parts.
- From a cracked exhaust manifold, seals missing or destroyed. Replace damaged parts.
- A leak between the exhaust manifold and turbo. Replace the seals or strengthen ties.
- A fuel injection pump or injector is insecure. Replace damaged parts.
- A bad valve adjustment. Refer to the manufacturer’s manual of the engine.
- A segmentation engine damage. Refer to the manufacturer’s manual of the engine.
- A valve and / or burned pistons. Refer to the manufacturer’s manual of the engine.
- From a damaged turbocharger. Find the reason for the failure and replace the turbo.
You see black exhaust smoke.
This failure may be because:
- A dirty air filter should be replaced or cleaned.
- A restriction in the intake duct of the compressor. Eliminate restrictions and replace damaged parts.
- A restricted air duct of the compressor to the intake manifold. It must then remove the restrictions and replace damaged parts.
- A restriction in the intake manifold. Eliminate restrictions and replace damaged parts.
- On an air leak in the supply air compressor to the intake manifold. Replace the seals or strengthen ties.
- On an air leak between the intake manifold and engine. Replace seals, gaskets or strengthen ties.
- A foreign body in the exhaust manifold. Remove the foreign body and refer to the manufacturer’s handbook.
- A restricted exhaust system. Remove the obstructing parts and replace damaged parts.
- From a cracked exhaust manifold, seals missing or destroyed. Replace damaged parts.
- A leak between the exhaust manifold and turbo. Replace the seals or strengthen ties.
- A fuel injection pump or injector is insecure. Replace damaged parts.
- A bad valve adjustment. Refer to the manufacturer’s manual of the engine.
- A segmentation engine damage. Refer to the manufacturer’s manual of the engine.
- A valve and / or burned pistons. Refer to the manufacturer’s manual of the engine.
- From a damaged turbocharger. Find the reason for the failure and replace the turbo.
You see blue exhaust smoke.
This failure may be because:
- A dirty air filter . Clean or change it.
- A restriction in the intake duct of the compressor. Eliminate restrictions and replace damaged parts.
- Restrictions in the intake manifold. Eliminate restrictions and replace damaged parts.
- On an air leak in the supply air compressor to the intake manifold. Replace seals, gaskets or strengthen ties.
- On an air leak between the intake manifold and engine. Replace seals, gaskets or strengthen ties.
- A foreign body in the exhaust manifold. Remove foreign body, refer to the manufacturer’s manual.
- A restriction in the oil supply. Eliminate restrictions and replace damaged parts.
- A deposit at the central case of the turbo. Change filter and engine oil, revise or replace the turbo.
- A segmentation engine damage. Refer to the manufacturer’s manual of the engine.
- A valve and / or burned pistons. Refer to the manufacturer’s manual of the engine.
- A damaged turbocharger. Find the reason for the failure. Revise or replace the turbo.
You experience high oil consumption.
This failure may be because:
- A dirty air filter. Clean or replace the filter element.
- A restriction in the intake duct of the compressor. Eliminate restrictions and replace damaged parts.
- On an air leak in the supply air compressor to the intake manifold. Replace seals, gaskets or strengthen ties.
- On an air leak between the intake manifold and engine. Replace seals, gaskets or strengthen ties.
- A foreign body in the exhaust manifold. Remove the foreign body and refer to the manufacturer’s handbook.
- A restriction in the oil supply. Eliminate restrictions and replace damaged parts.
- A deposit at the central case of the turbo. Change the engine oil filter, revise or replace the turbo.
- A segmentation engine damage. Refer to engine manufacturer’s manual.
- A valve and / or burned a piston. Refer to the manual of the engine manufacturer.
- From a damaged turbocharger. Find the reason for failure and revise or replace the turbo.
You notice that your turbocharger is noisy.
This failure may be because:
- A restriction in the intake duct of the compressor. Eliminate restrictions and replace damaged parts.
- A restricted air duct of the compressor to the intake manifold. Eliminate restrictions and replace damaged parts.
- A restriction in the intake manifold. Eliminate restrictions and replace damaged parts.
- On an air leak in the supply air filter air compressor. Replace seals, gaskets or strengthen ties.
- On an air leak in the supply air compressor to the intake manifold. Replace seals, gaskets or strengthen ties.
- On an air leak between the intake manifold and engine. Replace the seals or strengthen ties.
- A foreign body in the exhaust manifold. Remove the foreign body and refer to the manufacturer’s handbook.
- From a cracked exhaust manifold. In a joint destroyed or missing. Replace damaged parts.
- A leak between the exhaust manifold and turbo. Replace seals, gaskets or strengthen ties.
- A leaking exhaust pipe after the turbo. Repair leak and refer to the manual motor manufacturer.
- From a damaged turbocharger. Find the reason for failure and revise or replace the turbo.
You notice a regular noise from the turbocharger.
This failure may be because:
- A restriction in the intake duct of the compressor. Eliminate restrictions and replace damaged parts.
- From a damaged turbocharger. Find the reason for failure and revise or replace the turbo.
You notice an oil leak compressor side.
This failure may be because:
- A restriction in the intake duct of the compressor. Eliminate restrictions and replace damaged parts.
- From a damaged turbocharger. Find the reason for failure and revise or replace the turbo.
You notice an oil leak on the exhaust side.
This failure may be because:
- A restriction in the oil supply. Eliminate restrictions and replace damaged parts.
- A deposit on the turbo center housing. Change filter and engine oil, revise and replace the turbo.
- A segmentation engine damage. Refer to engine manufacturer’s manual.
- A valve or pistons burned. Refer to the manual motor manufacturer.
- From a damaged turbocharger. Find the reason for failure and revise or replace the turbo.
Choosing a turbocharger
There is only one consistent reference for your turbo vehicle. When searching you must learn the turbo code. This code is stamped on your turbocharged vehicle. 6 digits, it usually starts with a 7 or 4.
Instructions for installation of the turbocharger
The replacement turbocharger discussed below corresponds to the references Mitsubishi 491730750 … 753420 … and Garret, these turbos are compatible with some vehicles Citroen C2, C3, C3 II, C4, C4 PICASSO, XSARA PICASSO, C5II, C5 (X7) and BERLINGO II.
The benefit is relatively similar for other types of turbochargers.
Start by making a check of the cleanliness of the intake system.
- Check the air filter, replace if necessary.
- Clean the air filter housing.
- Check for foreign matter in air ducts downstream and upstream of the turbocharger.
- Check that the sleeves of the turbocharger are blocked or pinched.
- Make sure there is no foreign body leaving the head cover of the circuit breathing oil fumes.
- Remove if not already pre-filter which is running at the turbo side hose lube engine block. This filter should be removed when the first oil change .
- Empty résonneur any remaining oil. Replace the gasket at the inlet of the turbocharger, the turbocharger inlet fitting and O-ring air inlet of the turbocharger.
- Remove the heat exchanger air / air: Check for oil and foreign, reverse the heat exchanger air / air, wait 10 minutes. If you find oil or foreign bodies inside, clean with solvent.
When you remove the turbo, check for the nut assembly of the compressor wheel of admission.It can be dismantled due to a sudden stop of the whole circle. This is due to a lack of lubrication or the passage of a foreign body in the inlet of the turbocharger. If the bolt is missing, find it before it causes other damage.
- Replace the stem oil with a new one.
In the case where the vehicle exceeds 60 000 km it is important to make additional checks:
- When you remove the oil pan, check the appearance of oil and walls of the sump.
If the oil is thick: Disassemble valves and check for oil degraded. If this happens you must thoroughly clean the engine or change.
If the oil looks normal: Check the filter clogging suction. If one bolt is loose or if the filter has deposits, replace the intake filter.
If everything is fine, no problem, put properly in place the oil pan.
- Remove the vacuum pump and clean the strainer inlet oil vacuum pump.
- Replace the cartridge with oil.
- Replace the drain plug with new gasket.
- Fill the engine oil quantity recommended for the engine.
- Replace the filler cap.
- Replace the oil dipstick.
- Prime the oil system before starting the engine by disconnecting the injectors, start and run engine for 15 seconds. Reconnect the injectors and erase fault codes.
- Start the engine and let it idle for 5 minutes to allow the turbocharger to reach the correct pressure.
- Stop the engine and wait 15 minutes.
- Recheck the oil level, it should be between the levels prescribed by the manufacturer of the turbocharger.
- Replenish oil if necessary.
- Check the operation by a road test.
- By disconnecting the fuel inlet air to the turbocharger, check the blades of the compressor wheel inlet.
Expert Tips for turbo Yakarouler
Please note, manufacturer warranties do not include the turbo failed because of lack of maintenance associated with these requirements
- Check in an assembly that neither the oil inlet or outlet are not blocked particles deposited on the inner walls of the pipe. Beware also that these pipes are not twisted or bent.
- Always use an oil compatible with your engine.
- Follow the oil change intervals. The engine oil on normal usage should be replaced every two years maximum, even if the mileage is low.
- Follow above all mileage limits before discharge.