Hi All:

First off, a big Thank You to stevebfl, joeym, ozzy and inetd who helped with my power problem at wide open throttle. My '87 260E ran like it was starving for fuel. The problem got so bad, I could only muster 15 mph uphill.

The problem ended up being I think the EHA. I spent a lot of time not to mention a drained bank account trying to R & R parts. I first changed the EHA without fixing the problem then I read that it needed adjusting. From what I read a quarter turn clockwise was the ultimate cure.

I ended up turning it in one and a half turns clockwise to get it back to idle smoothly and at almost full power. This leads to my next questions to all you experts out there.

Is one and a half turns clockwise too much thus telling me that I have another underlying problem? I noticed with this setting, I have a lot of white smoke coming out from my exhaust. Possibly unburnt fuel. Not quite sure since it only happens when I gun the engine under load.

My coolant level and oil level seems to be steady so far. The car has been running fine for the past two weeks but the new EHA setting and smoke is starting to concern me.

Any advice would be greatly appreciated and Thank You in advance for anyone willing to chime in here.

Aloha,
Eric

__________________
1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles

Hi All:

Anyone with any suggestions?

Aloha,
Eric

__________________
1987 260E Charcoal Grey 157,000 Miles
1987 260E Forest Green 120,000 Miles

I am no expert, but WHITE smoke is not related to unburned fuel.
Unburned fuel is normally BLACK and SOOTY.

Keep an eye on the coolant level, as WHITE smoke is most likely related to COOLANT entering the combustion chamber. And is completely unrelated to the EHA adjustment (IMHO)

__________________
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified

I would really recomend going to Sears and buying their $30 digital multimeter that has the ability to read duty cycle

additionnal little question to experts.

Adjusting the EHA does it change the lower chamber pressure?

If the reply is yes then I beleive the best way to check whether it is correctly adjusted is to connect two pressure gauge one on the upper chamber and one on the lower chamber (difference 0.4bars). Does any expert concurr with my assumptions/ conclusion?

__________________
Keep us posted especially if your problem is solved
Present cars:
My car: E-class 420CDI, 2008, W211, V8, 180 000km

Wife's one: C-class 220CDI Sport Coupé, Euro, 2002, W203. 345 000km

Son's one: GLK class, 220CDI, 2009, W204

Sold: E-class 260E, 1988, W124, Wonderfull car sold after 489 000 kilometres of reliable services (engine M103, clutch, brake system and 5 speed manual gear box all original).

Sold: E-class, 320CDI, W210, 2000, 225 000km

The EHA controls the chamber pressure diference yes! It is used to make slight adjustments to keep lambda in the proper range. At WOT it gives more fuel flow basically! At idle and throughout the power band it will keep the mixture where it is supposed to be based on readings and interpretations from the O2 sensor and a Water Temp Sensor on the block!

__________________
~Jamie
_________________
2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....