Difficulty
Moderate
Steps
6
Time Required
00:40:00
Ce tutoriel a été créé par la communauté
User contributed
Introduction
EGR valve replacement on Mercedes type 203: W203, CL203, S203, Saloon, Estate, Coupé: 220CDI
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Pull the red lever located under the steering wheel. The hood will lift slightly.
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Pull the black lever located at the front of the hood to open it completely.
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Locate the oil cap.
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Please note: The position may vary from one engine to another but the principle will always be the same.
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Unscrew the oil cap a quarter turn, then remove it.
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Unclip the engine cover by lifting it firmly.
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Screw the oil cap back on.
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Locate the EGR valve
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Press the tab marked in yellow.
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While holding the tab down, pull the plug in the direction of the arrow.
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Using the 8mm socket wrench, remove the two bolts marked in orange.
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The EGR valve is now separated from the rest of the engine. However, it is difficult to remove the valve at this stage because it is usually "stuck" by combustion residue.
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Using a wooden wedge and a hammer, tap the valve at the indicated location to make it turn on its axis.
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After it has turned a few inches, turn it in the opposite direction. The valve should gradually come loose and be removable by hand.
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Remove the valve by pulling it upwards.
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On the new EGR valve, lightly grease the seal to facilitate installation.
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Position the new EGR valve. Using the 8mm socket wrench, tighten the two retaining bolts.
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Reconnect the plug.
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The new valve is now installed.
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Unscrew the oil cap, it lifts off after turning it a quarter turn.
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Clip the engine cover by pressing it firmly.
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Screw the oil cap back on.
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Close the hood and the operation is complete.
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9 Comments
The valve resists. You have to do this several times. I started the engine at idle to warm up the part. As soon as I felt the valve was released, I stopped the engine and removed it. The tutorial is very well done. Be careful with the metal heating hose though. By leaning on it, I slightly deformed it.
Hello! Thanks for this very simple tutorial, but do you have to do a calculator training again after installing a new valve?
Because I fitted a new EGR valve with engine fault clearing, the car experiences jerks at 2000 rpm which disappear when I disconnect it!
THANKS!
Good morning
we can make a tear, with threaded rods, move the valve with an aluminum bar by tapping with a hammer at screw heights. when the valve is moved, thread the threaded rods with their nuts, first drill two holes in a piece of iron, pass the threaded rods with two additional nuts
Place a batten across the engine and screw it in, do not use W'40 for the moment.
W40 melts the soot, it accumulates on the walls, therefore more thickness
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If the valve does not come out, simply turn the valve so that one of the fixing holes is in the void, pass a tap M8x1.25.
Turn the valve again in the other direction to have the second hole in the void, tap the second one (no need to drill larger).
Position the valve by rotating it so that the holes are above a solid part of the support (not above the original threads of the support).
Screw in 2 M8 screws, alternate the 2 screw tightenings. And the valve comes out.
That's all. It's up to you.
