Whats the best - Fuel pump type for Mercedes W124 260E

[optimusprime]

To bring the post back to life . Strainer was removed yesterday along with the hose to the pump from the strainer ..i recon after seeing this i can rule out tank blockage ..see pics .After the hose was removed the fuel was drained out there was 6 gallon in total . .not very fresh by the smell of it .And in the last drop we found sludge . But nothing on the strainer ..The strainer is good for another 36 years , so is the hose ..Now hunt is on for good pumps .pic of old ones

 

[ray_hennig]

But nothing on the strainer

My strainer was very clean and was very likely the original. We changed it anyway as I had one in stock. But I've retained the original as it's really clean after a burst of carb cleaner. My comment about the filter was purely based on the pain involved in removing and replacing the pump pack and the relative cheapness of the filter.

R

 

[optimusprime]

Ray i paid for the job to be done .On the search now for new ones again . NBeen on to Partsinmotion and got a claim in ...Bosch pumps i purchased had 5 years warranty on them ..But they are playing hard to get ,,,with information on the Ebay receipt took some finding in amongst 6 folders ,,,,not easy when some time back i dropped them ... and all receipts got mixed up as i put tham back in the folders .Wish me luck in getting a claim going

 

[ray_hennig]

Wish me luck in getting a claim going

Good luck!

R

 

[optimusprime]

Thanks Ray i need a little luck right now ..Trev

 

[optimusprime]

Ray i am a bugger for punishment ..going down the same road for another set of Bosch pumps

Pardon our interruption...

Dont know why it as Pardon the interruption? but thats the link i left you

 

[optimusprime]

Ray i have just operated on one of the old Bosch pumps that were removed last year .It was as clean as the strainer , there is nothing in there clean as a whistle ..know what i cant fathom out how they work without blowing up . They are sealed top and bottom ,and fuel circulates in the center ..they look like an explosive device ,,,,i will post a few pictures if i have time Thursday .
Ray you have a good night ...Trev

 

[optimusprime]

This is just what i have done . I could not understand once i had it open , how the pump is full of volatile fuel , and its not exploded ..so to anyone that did not know , like me , then watch the video .

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[optimusprime]

And for another project ,as if i dont have enough problems now .
Pricing EHA valve o rings or as some call them seals ..look at this and its fo one only

 

[optimusprime]

Any one have an outlet for these EHA valve O rings showing in the picture ?

 

[ray_hennig]

Any one have an outlet for these EHA valve O rings showing in the picture ?

MB, should still be available. A0129979748.

Failing that, AutoDoc for Bosch ones at about 5€ each.

Are you sure it's the O-rings? Years ago on my 300-24 it was the EHA leaking which, these days, is a costly business. Sorry.

R

 

[optimusprime]

Ray Would that number be the same as i need ? but i will check thats if my information manual includes fuel injection system ..

 

[ray_hennig]

Would that number be the same as i need ?

Can't say but it seems likely.

In your shoes I'd be tempted to try some similar sized nitrile O-ring (Lidl???) to see it that is the issue. If so, get the good ones.

I say that because my radiator connection was leaking a couple of months ago so I replaced an O-ring with some random thing I have in stock and the minor leak has stopped and all's well 2 months later.

If not, start saving for a new EHA.

R

 

[optimusprime]

Ray i dont have a problem with the EHA ,,,well dont think i have ..It was a job easily done just to replace them

 

[optimusprime]

Ray .Would you know what brackets hold the plastic splash cover on to the pumps .
There are 3 x 10 mm plastic nuts .I need to know whats above them that they screw on to .
Cant find any info in the manual

 

[ray_hennig]

brackets hold the plastic splash cover on to the pumps .

I would say they hold on to the underside of the body, not on to the pumps.

I would expect some sort of clips into which the plastic screws engage. Can't see anything in the EPC, sorry.

R

 

[optimusprime]

No i cant Ray ,, been through all the crap we keep for that rainy day ---haha like to-dday ..

 

[optimusprime]

The fuel pump saga
Well after all the searching, i went and purchased another pair of Bosch fuel pumps.. 1 they have a lifetime warranty ..And 2 the company i purchased them from are in Germany.
I notice on the new pumps had this app mark etched in to the body of the pump .
Old fuel pumps did not have this mark ..see pic
After they were fitted i drove up to the garage for more fuel and it went like new . .
So time will tell ....The ones removed had been on the car 6 months i have a warranty claim to fill in now before i can return them .

 

[Will]

To be fair those QR code markings are a relatively recent addition? The old ones that were in the car from new obviously wouldn’t have had those either!

So it’s a question of whether the other replacement pumps are original or counterfeit/copy parts - they could have just original but new old stock?

 

[optimusprime]

Taking back what i said about the etched mark ,,looking at the old ones we just pulled out , they too have the same mark . They were new in 2021 but never fitted them until last year .,,but i think i found the problem ..the none return valve on one of them was loose and the rubber insulation had cracked open in a few places on the bottom .. I never put these pumps in last yeasr .Car was stuck on the drive ,and a no starter ..i had a local mobile mechanic come and fit them ...bad idea , but i was unable to do the myself at the time. In doing the job ha bropke off a retaining stud that holds the pump splash cover ..and because i fitted a pair of insulation sleeves he had trouble pulling the pump cage together to put the bolt in , so he cable tied it closed ..I have more nuts and bolts in my garage, so why he never asked me for one i dont know , i even had him back to check his work ,,,said all was well , and no leaks ... Moral of the story is --if you can do the job dont let others do it for you ..