Car was beginning to become harder and harder to start. Now it doesn't want to start at all. Removed the air cleaner and noticed gas leaking from the EHA valve. Same leak appeared in same area. Is there something I'm missing? Is the fuel distributor leaking?

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1995 E420 152k
1991 300D 2.5 348116 daily driver
1992 300E 2.6 196k-work in progress(head gasket)
2002 BMW 745Li 93k

First replace the two green/black O-rings under the EHA and pray that' resolves the leak, otherwise you must replace the unit (DO NOT BUY EBAY EHA's). You must buy new and they are ~$240. From there it may require adjustment to flow match with the distributor.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

I think that I omitted that part where I changed the unit and it was still leaking in the same place. Thanks for the tip. I didn't replace the washers. I'll try that out and report back.

__________________
1995 E420 152k
1991 300D 2.5 348116 daily driver
1992 300E 2.6 196k-work in progress(head gasket)
2002 BMW 745Li 93k

That'll be the cause then. They just turn hard that's all. Make sure to keep the original on, every EHA is slightly different when it comes to wear so keep everything in pairs if at all possible otherwise immediately or down the road you'll have fuel flow issues.

__________________
2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k

Ok, thanks.

__________________
1995 E420 152k
1991 300D 2.5 348116 daily driver
1992 300E 2.6 196k-work in progress(head gasket)
2002 BMW 745Li 93k

ok, replaced washers for the new unit. No more leaking. Now the car starts, but will only run for about 5-10 seconds. I believe that it needs the flow adjustment; I'm not quite sure how to do it.

__________________
1995 E420 152k
1991 300D 2.5 348116 daily driver
1992 300E 2.6 196k-work in progress(head gasket)
2002 BMW 745Li 93k

serch on adjusting the EHA and you will find what you need for the electrial value on the EHA and how to set it. good luck it realy is not hard just takes very small movements of the screw.

Thanks.

__________________
1995 E420 152k
1991 300D 2.5 348116 daily driver
1992 300E 2.6 196k-work in progress(head gasket)
2002 BMW 745Li 93k

Well I actually pulled a fuel distributor w/EHA still attached. Installed it and it started and idled perfectly. I put in in gear and the engine starts to bog down, stumble and finally shut down. Well I get back under the hood and adjust the fuel/air mixture an 1/8 of turn here and a 1/16 of a turn there and now she's running perfectly, very strong.

__________________
1995 E420 152k
1991 300D 2.5 348116 daily driver
1992 300E 2.6 196k-work in progress(head gasket)
2002 BMW 745Li 93k