Fuel Injection Pump

[sens]

Yes Cees,

I know my local workshop pretty well and he could help me calibrating the old Bosch CO meter!

Thanks,

Halvor

[mauro12]

Hi !i have a similar situation but at the opposite site. i have a 250sl with original engine but my injection pump has been replaced probably by the previous owners ( i dont know why and when ). The pump i've got is the r22 , which is typical of a 280se car. 2 years ago i sent the pump for a complete overhaul becauase the car was running very rich ( i sent to hans fritszche in germany , oldtimer technik) . He replaced the space cam with the correct cam of an r18 pump and set my pump accoriding to the r18 configuration. The result is perfect . He suggested me to replace the injectors too but i had a bad experience with r2 injectors ( you can read in the forum if you want ). i have a popping sound when i release the accelerator too , but i guess is something wrong with the exhaust or a small leak near that .
i bought from mbclassic.de a set of new r2 injectors and they were not working at all and i've been refunded. I decided to keep my old r1 for the moment . They release the fuel a bit too early but still within the specs.

[sens]

Thanks for your comment Mauro!

My FIP is at the workshop actually and specialist will tune it at the correct specs for a 280 SL engine.

I will let you know what the result will be!

Halvor

[sens]

Hello!

The FIP is adjusted for a M130 engine now.

It was still a bit rich in the beginning, but after removing a shimm under the Barometric Compensator (half a turn) things got a lot better.

Colortune gives me a more or less blue combustion flame.
No more popping, no hesitation when accelerating, power feels great!

I think the FIP is realy well adjustied and the car drives very well!

Thanks for all the support!

Halvor

[rwmastel]

Hoooray!!  Congratulations.   

[thomasw]

All very fair comments Pawel! Thanks!
It shows the power of a picture...

The vacuum line goes on my 123-distributor and reduces its diameter just before the throttle body. Probably not original, but no leaks...

The tension on the spark leads is too high, I agree. I will change that. Easy fix!

My 123-ignition has long wires and I decided not to cut them yet, so that confuses when you look at the picture. Well spotted. I attached another picture.

Thanks again for your comments!

On the first picture it looks like you are missing the cap over the axle for the air inlet. This cap has a paper gasket. I guess it will draw in air there.

[sens]

Thank you!
It was quite a jouney, but I am very happy with the result!!

Special “thank you” to my allmost neighbour Rosch who gave me a lot of very useful advice!

[sens]

Thanks Sweden for your comment!

Can you explain more in detail what cap you mean?

Thanks!

[thomasw]

Thanks Sweden for your comment!

Can you explain more in detail what cap you mean?

Thanks!

This photo is from my M127 engine, if yours has the same look i guess you are missing this cap = cover.

[sens]

I see!

See picture.

You are absolutely right!
Never noticed that something was missing here.

I’ll try to find one.

Thanks for your observation!


Halvor

[Pawel66]

If the car is automatic, there is a switch in this place that controls the shifting. If it is manual, there is a gasket and cover. The cover is available at SLS-HH shop.

[sens]

Indeed, I found the part.

But also this statement on the forum:

Re: Throttle body butterfly axle cap?

Pete Lesler wrote:

The 280's did not have this cover. only the 230 and 250.
I have an early  factory photo of a 280SL which clearly shows this cover is missing.  I challenged an owner of a 1969 280SL with manual trans at Legends of the Autobahn as his throttle housing was missing the coverr.  We researched it and have determined that it was left off the manual trans 280SL's.

Pete Lesler
W113SL


So maybe it was never there...

I have a smoke device to look for air leaks.
If there is no leak, I will leave it as is.

Thanks again,

Halvor