Is this the EHA??? - PeachParts Mercedes-Benz Forum

A264172 · #1 03-19-2007, 06:21 PM

Quote:

Originally Posted by merci

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I read that the "mixture" should be adjusted with a new EHA. I doubt if the indie shop did. How is this done exactly?

Any advice would be greatly appreciated.

There is a screw on the EHA. If you unscrew it there is a hex screw beneath which can be adjusted.
This adjustment is sometimes usefull for this sort of trouble but probably should be the last thing you try:
Adjusting an EHA. It IS possible!!
The above thread has lots of info about peoples EHA adjustment experiences... also search 'EHA' and you will find a lot more reading.
The problem is you are adjusting something which is not easily measured...
the EHA adjustment might affect the pressure in your fuel distributor so you would need to measure upper and lower chamber pressure during the adjustment to really know what was going on...
Idealy you should adjust what you can measure first. This link has some info on checking duty cycle, as do the links in my signature...
Rough idle/hesitation after EHA adjustment (W124 300E)
What kind of engine do you have?