It will work fine when I disconnect the EHA switch but when I connect it I need to realigne the fuel distributor and will work for a while then black smoke again and rough idle/cutting.
It's really annoying. I changed the followings:

Spark plugs
Injectors
Spark plug wires
Fuel filter
Fuel accumulators (Front and back)
EHA
Fuel distributor

I checked the followings and they are all good:
Fuel pumps/pressure
No oil in sparks
No vacuum leaks
O2 sensor
Fuel pump relay
Cap/rotor
Engine timing

Could a new EHA valve be faulty?

__________________
Master Computer Engineer, A+, Network+, MCP/MCSA/MCSE 4/2k/2k3 - Messaging, MCTS, MCITP, MCT, Brainbench, ICDL and starting Ph.D

380SE 1984 <------- Totaled by flipping accident
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Volvo S70 2000 <---- 4 family
Opel Omega 2002 <-- 4 family
560SEC 1989 <------ Sold
560SEL 1990 <------ Sold
560SEL 1991 <------ 4 my mother
560SEL 1989 <------ Sold
600SEL 1992 <------ Current

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