W124 M104 bogging when warm + fuel leak

[jonnyboy]

She's far more important than a heap of metal.
Good luck.

 

[carat 3.6]

Sorry to hear about your wife, I hope all goes well for you both.

 

[jonthetourist]

Whilst there is a 6 year hole in its history from 2006-2012 the last documented change of rotor arm was 15 Dec 1997 at 143,607 miles.

I'm not going to name and shame the garage just yet because I haven't had a chance to talk to them about it. Unfortunately late last night my wife was rushed into hospital, so the car will have to wait.

Obviously the wife comes first, but my experience is that the dizzy cap is a consumable on these, the root of most problems, and worth changing after more than 3 years regardless of your current issue.

Cheers and good luck to both of you.

Jon

 

[BlueQuinn]

Just took the air cleaner off so I could take some hi-res photos, and had a look at the external state of the dizzy cap. It's too bloody cold to stand

The servicing work that the garage claim to have done, does appear to have been done. The air filter and temp sensor are new, and removing the air filter reveals that the screw threads on the fuel distributor are clean, indicating that the injectors have been adjusted. Plus the fluids are new.

I cannot see any evidence of the EHA having any leaks, and the air sensor plate moves freely with no binding.

The cap has quite a few small cracks, and if it's that bad on the outside, I think it's worth replacing that and the rotor arm as a matter of course.

 

[carat 3.6]

removing the air filter reveals that the screw threads on the fuel distributor are clean, indicating that the injectors have been adjusted.

The cap has quite a few small cracks, and if it's that bad on the outside, I think it's worth replacing that and the rotor arm as a matter of course.

Did they charge you for adjusting the injectors? Which threads are you referring to?

Glad your changing the cap and rotor arm, I'm expecting the terminals to be corroded inside.

 

[BlueQuinn]

The threads as arrowed here

 

[carat 3.6]

The threads as arrowed here

Those screws hold the 2 half's of the metering head together, they are not for adjustment.

 

[jonnyboy]

More evidence of "they didn't know what they were doing" perhaps?

 

[carat 3.6]

Seem's that way, the injectors are not adjustable on these.

 

[jaymanek]

They may well have just undone them to check for fuel flow...

They would have adjusted the idle mixture by using the allen nut and a gas analyzer..

 

[carat 3.6]

They may well have just undone them to check for fuel flow...

They would have adjusted the idle mixture by using the allen nut and a gas analyzer..

They could have played with the idle mixture, but they clearly haven't done anything to the metering head.

They would of needed to remove the unit from the engine to get to those screws, but I see no evidence of that.

 

[BlueQuinn]

Thank you to everybody who suggested looking at the dizzy cap and rotor.
I replaced them both today with new Bosch items, and took the car for a road test, and it is now running perfectly under all load conditions and at all temperatures. The old cap had arcing corrosion marks all round, and the rotor was a Beru, rather than a Bosch and was very corroded.

I am so relieved, as with everything else going on the stress of having a broken car was really not helping.

Thanks also for the wishes regarding my wife. Unfortunately she has been battling cancer for the last 4 years and now we have reached the very end of the road. She's not likely to last the week, so I'll sign off now.

 

[BlueQuinn]

Oh, and regarding the garage, the rest of the service has been done and it's driving well, they replaced all the bits I asked them to. They had 4 other W124s in at the time, so they should know what they are doing.

 

[jonnyboy]

So sorry to hear about your good lady. You know where we all are if you need us.