W126

87 300SDL rocking at idle

Idle problem getting much worse.
Help if you can. My '87 6cylinder SDL is a little different than older models. However, my idle is driving me nuts. The car has been running great for years. Last month every once in a while when Hot the engine would Rock/Roll at idle. That idle problem got worse and worse. It is intermitent & used to only happen after the engine got to hot operating temp. Now it happens at all temps and is still intermittant. Sometimes it idles just beautifully. I've inspected the entire fuel system, replaced most of the hoses and clamps, replaced the fuel Pump. My IP is a little different than pre '87 Mercedes, so I don't have a dampner bolt and my ALDA looks different than older models.
Any suggestions on what to try and adjust?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

1984 300SD smoke during Wide open Throttle (WOT)

Hey guys and gals.

1984 300SD
142k miles
I have had it about 8 months
I have changed both fuel filters and purged about 5 months ago.
It has a fairly fresh oil change and filter about 3 months and 3500 miles ago.

It starts and runs very easily and well.
It kicks down and shift correctly (sometimes a little jerk on upshirt but really minor)
All my vacuum stuff works

When I drive the car it start and warms up to 1/4 the way above 80deg on the temp gauge and stays there if it matters.

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

transmission differences, 300Dt / TD / CD / SD (W123, W126)

I'm looking at cobbling together an engine and tranny, a car with a blown engine, and a car with a wasted tranny..

The problem is.. The car with the wasted tranny (300SD) is in Arizona.. The car with the wasted engine (300Dt) is in Missouri, and the available donor engine transmission is in Michigan..

..Oh, and I'm in Ohio, closest to the engine/tranny, but even that's 70 miles from me.

Chassis Model Number

W126
W123

Forums

Diesel Engine Specific Aid

560sel ignition coil

Have a 1990 560sel with 127k miles. Want to start changing the oil myself via the dipstick. Other sites say that it's best to disconnect the ignition coil before cranking the engine over after the change. This prevents too much strain on the timing chain. Have a repair CD but the coil is not behind the EZL as shown on the diagram. Looking for the location of the coil. Thanks.

Chassis Model Number

W126

Forums

Body and Interior Specific Aid

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