Replacing fuel pumps, fuel accumulator and hangers (pics)

[MBeige]

Just wanted to share pics of the replacement of two fuel pumps, the fuel accumulator and 4 hangers

Opened up the cover protecting the assembly:


Replace those hangers, they're cheap!


Old hoses



Old and new: fuel accumulator (notice the new one has a slightly longer body, but shorter tube; in contrast the old one has a shorter body but longer tube - same overall length though) - upgraded design?




Old and new: fuel pumps


This old one looks tired, but still ran well except for the weeping fuel


Probably original? Still has MB logo


Brand new Cohline-made hose, sold by MB



Brand new Bosch fuel pumps


Everything installed, ready to be buttoned up


We also replaced the differential oil



No more clunking when downshifting! No more fuel smell either. Starts right up also, no stumbling at startup. Hopefully this increases MPG slightly also.

[Stretch]

Nice pictures - I guess this is your W124?

[MBeige]

Thanks Tristan. No, this is the W201 (1989 190E 2.6).

The W124 uses a different set of hoses, IIRC.

[Stretch]

Great stuff - I haven't been under either of those vehicles so it is all new to me.

I like your pump for the diff oil. Where did you get that?

[MBeige]

My indy, who was the one doing the job, had this pump handy.

I've learned a ton from my 190E ownership especially under his care. Same goes with the 300D, also under his care.

[MBeige]

So the drive this morning was much smoother, still a but of a thunk but not as hard as before. Maybe I need to fine tune the bowden cable, but ultimately I'm pleased.

I now have run 83 miles to a quarter tank. My normal average was 70 miles per quarter tank.

When we did the work, we had to drain fuel from the tank, naturally. Upon completion of the job we poured the fuel back and I had to refuel. The volume I added was 13.7 gallons, with 274 miles to that one tank. Considering I lost fuel through the job, this is at least 20 mpg. Those 274 miles were 90% city driving (stop & go).

Considering the car used to have 15 to 16 mpg on a good day when the valves were shot and the transmission modulator made shifting and delivering power awkward, I'm happy where this is going.

I don't hear much difference between the old pumps and new pumps, so I'm attributing this to old pumps that were still good, except for the weeping fuel part.

Cold starts are MUCH better too, so far, with the new accumulator.