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Old 05-28-2001, 09:52 PM
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Join Date: Mar 2001
Location: Accokeek, MD
Posts: 683
Today I discovered the cause of the gsoline odor coming from the engine. There was a steady drip coming from the EHA valve that is mounted on the back of the fuel distributor. (little black two inch cube with electric connector)

Are EHA valves similar to water pumps in that they will leak through pre-drilled holes when the part fails? There are two holes in the EHA valve that appear to be leaking gas.
However there are two O Rings that act as gasgets for the valve. They might also be the cause of the leak. I'd hate to spend $150.00 for a part when all I need are two tiny O rings.

Does anyone have experience with EHA valves?

Smiles.

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Earl



1993 190E 2.3
2000 Toyota 4x4 Tundra
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  #2  
Old 05-28-2001, 10:06 PM
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Join Date: Mar 2000
Location: Gainesville FL
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It's almost always the EHA itself, but the o-rings are cheap and their replacement is very simple, so why not replace them and find out?
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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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Old 05-28-2001, 10:30 PM
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Join Date: Mar 2001
Location: Accokeek, MD
Posts: 683
Ok Steve thanks. By the way... the info you gave me about the location of the connector for the vacume pump was accurate. It was under the carpet between right front and rear seats. It was a crimp connector under the rug, and subfloor, inside the wiring chanel and then inside the wiring harness. I had to remove the front seat and cut the harness open to find it. There were about 5 wires crimped together(r/w)... the exposed tips all corroded to green powder. Grounds and switched grounds were also in poor shape.

Regarding the EHA valve... do you know if they are designed to leak like a failed water pump will do when it fails?

Smiles.

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1993 190E 2.3
2000 Toyota 4x4 Tundra
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