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Intake Manifold Removal - C Class - W204 - Mercedes-Benz
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Intake Manifold Removal - C Class - W204 - Mercedes-Benz
Intake Manifold Removal
Time: 4 hours
Tab: $10
Talent: 3
Tools: T30 Torx, E10 Torx, 17mm wrench, small flathead screwdriver
Applicable Models:
Mercedes-Benz C350 (2008-14)
Mercedes-Benz GLK350 (2010-14)
Parts Required: Gaskets, white lithium grease, O-rings
Hot Tip: Clean around the runners before removing
Performance Gain: Fix problems with the manifold
Complementary Modification: Replace worn out hoses
There are several common problems that need to be eventually fixed with the EGR and swirl flaps on the Mercedes intake manifold. Unfortunately, you need to remove the complete manifold to access the repairs.
While it is possible to remove the intake manifold without removing the injectors and fuel rail it is only a few extra steps to pull the injectors. Doing so will give you a little more room and less things for the wiring to get hung up on when you are removing the manifold. If you want to leave the injectors in place simply skip the step of pulling the rail and injectors.
If you are going to be opening the fuel line on the motor the first step is to prep the car. I like to tell people to pull the fuel pump relay and then try to start the car. The car will turn over and then die. Do this about two to three times. Doing so will help drain excess fuel out of your system. Also open the gas cap to help depressurize the system. Then, make sure that the car has cooled down; you don't want to be working with gasoline when the car is hot.
Have a fire extinguisher handy. There will be some spillage of fuel as it's nearly impossible to prevent. Also, wear chemical resistant gloves if you don't want to get any gasoline on your hands, and make sure that you have plenty of paper towels or rags to help you clean up. Perform the injector removal in a clear, open, and well-ventilated space. It may not hurt to have an assistant around in case there are any problems.
You are going to be pulling the injectors out from the manifold so make sure to clean around the area and blow it out with compressed air so you do not get dirt down into the injector openings.
Removing the intake manifold is not a quick job but it is made easier with these step by step instructions
Applies to: C350 (2007-14), SLK350 (2004-14), CLS350 (2004-14), CLK350 (2005-14), E350 (2005-14), S350 (2005-14), SL350 (2005-14), R350 (2006-14), ML350 (2006-14), Viano (2005-14), Sprinter (2006-14), CLC350 (2008-14), GLK350 (2008-12)
Tumble Flap Position Sensor Replacement - C Class - W204 - Mercedes-Benz Tumble Flap Position Sensor Replacement Time: 2 hours Tab: $50 to $100 Talent: 2 Tools: T-30 Torx driver, small flathead screwdriver Applicable Models: Mercedes-Benz C350 (2008-14) Mercedes-Benz GLK350 (2010-14) Parts Required: Tumble flap sensor Hot Tip: Be prepared to move things out of the way Performance Gain: Working variable resonance intake Complementary Modification: New air filter The Mercedes C350 has a variable resonance intake manifold. This manifold can switch over from long intake runners to short intake runners by utilizing switch flaps and tumbler or flap shafts. There are two shafts, one on each side of the intake manifold. If you are getting error codes from the variable system, one of the first things you should check is the tumbler flap sensor for failure. Both sensors are located at the rear of the intake manifold. While replacement in theory is easy I have never been able to si...
Coolant Temperature Sensor Replacement - C Class - W204 - Mercedes-Benz Coolant Temperature Sensor Replacement Time: 2 hours Tab: $1 to $20 Talent: 1 Tools: T30 Torx Applicable Models: Mercedes-Benz C350 (2008-14) Mercedes-Benz GLK350 (2010-14) Parts Required: Coolant temperature sensor Hot Tip: Use a mirror to see the sensor Performance Gain: Proper temperature readings Complementary Modification: Flush cooling system The coolant temperature sensor is located on the rear of the left cylinder head. Replacement is not that difficult but you will be working with the coolant so take proper precautions; first make sure the coolant is below 40 degrees Celsius. Wear gloves and be prepared to catch the coolant and dispose of it in accordance with the regulations in your area. Also even though not a lot of coolant will escape make sure to refill and bleed the system when you are finished. Check your water temperature sensor before replacing the thermostat. Applies to: C350 (20...
Crankshaft Positioning Sensor Replacement - C Class - W204 - Mercedes-Benz Crankshaft Positioning Sensor Replacement Time: 2 hours Tab: $20 to $40 Talent: 1 Tools: T30 Torx Applicable Models: Mercedes-Benz C350 (2008-14) Mercedes-Benz GLK350 (2010-14) Parts Required: Crankshaft positioning sensor Hot Tip: Use a mirror Performance Gain: Smoother running car Complementary Modification: Replace Camshaft positioning sensors Your fuel injection computer (DME) may output a code that indicates a faulty camshaft position sensor (CPS). This important sensor tells the car's computer where the flywheel is located in relation to the combustion cycle. The DME takes the signals from both the cam position sensor and crankshaft position sensor, and calculates when to fire the fuel injectors and spark plugs. If the crankshaft position sensor is not operating properly, your car will run very erratically or perhaps not at all. Replacement of the sensor is not as easy as the camshaf...
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