280SE 3.5 Problem mit dem Injektorimpulsstrom

Dear Volker,

I explained the static test procedure only because Kutluhan performed it in a very complicated and at least not correct way.

I am well aware about the fact that - to be sure - ones needs a dynamic test. As you know, I applied a proposal by Norbert: The fuel injector test device EM276.

Best regards,
Recardo

Merhaba Kutluhan,

you will need a timing pistol for verifying and adjusting ignition timing. Good ones also measure dwell and rpm. Then you check in our 107 SL workshop manual chapter 07.5-500 . It also contains your ignition distributor.

Merhaba Volker,
Ok I have one timing gun with shows idle speed(engine speed rpm), dwell angle, and igniton timing.Thank you very much for 107SL workshop manual .Will follow procedure again. I have m16-117 3.5/4.5 engine book as well

Merhaba Volker,
Do you want me to send you my MAP sensors? 012 old type and new type? Can you test or retune if adjustments deviate over time?

Best Regards,
Kutluhan,

Merhaba Kutluhan,

I have seen MAP sensors from late production where slope of the curve did not fit. Then it cannot be tuned to correct values. To tune this MAP sensor means it has to be opened., rivets, potting and screw removed.

So let us hear the FD date first.

Merhaba Volker,
I send you the pictures of rivet version which is currently on car, and the old version(without rivet instead screw) keep at home. 070 written on it.

Could you please check?

Thank you very much in advance

Merhaba Kutluhan,

nice engine compartment!

Bad news on MAP sensors: FD 070 means October 1990. Not to be trusted and not sure whether it can be tuend to correct values. The one with screws has also been opened. Ventilation slits should be on right bottom.They are on left side.