[ssanmor]

erratic idling and worse

My '92 190E 2.3 also idles rough. Furthermore, I recently changed the spark plugs and now it not only idles more rough but it hesitates badly when accelerating. The spark plugs were the "EON3", and my car is listed in the application table, so they should be suitable. Can they have broken my HT leads? In that case, should the car go that way, that is, not too bad in the highway but with fire missings?

By the way, my1st88, did you change the spark plugs, leads, rotor and cap by yourself? I am about to do it, so any advice will help.
Best regards.

 

[ssanmor]

erratic idling and worse

My '92 190E 2.3 also idles rough. Furthermore, I recently changed the spark plugs and now it not only idles more rough but it hesitates badly when accelerating. The spark plugs were the "EON3", and my car is listed in the application table, so they should be suitable. Can they have broken my HT leads? In that case, should the car go that way, that is, not too bad in the highway but with fire missings?

By the way, my1st88, did you change the spark plugs, leads, rotor and cap by yourself? I am about to do it, so any advice will help.
Best regards.

 

[ssanmor]

What is the common fault of that idle control valve, can it be fixed by cleaning it? how?
...

What is the common fault of that idle control valve, can it be fixed by cleaning it? how?
By the way, is the rough idling a design fault or it appears only when something gets bad? Did the brand new car idle ok?

Best regards

 

[ssanmor]

What problem did you cure, the erratic idling or the shakes and misfires?
You mean sprayi...

What problem did you cure, the erratic idling or the shakes and misfires?
You mean spraying that into the plate by removing the air filter cover? What do you mean with the throotle body gummed up?
Thanks!

 

[ssanmor]

Well, really my idle is not so bad: you only notice vibrations in the engine, and the re...

Well, really my idle is not so bad: you only notice vibrations in the engine, and the rev. gauge doesn't nearly move.

Where can I found that carb cleaner you talk about? Do you just spray it over the fuel distributor plate that is below the filter?
Another question about spark plug wires: what if one of them is broken? The car seems to run with all four cylinders, but sometimes it shakes, specially when pushing from low revs, other times it doesn't. I have heard that, if a cable is broken, it can still produce spark but it is less intense. What do you think?
Best regards,

Sergio