javimx5

Hi all

First to say that I've gone trough the forum and haven't found a related article on this matter, have just restored a Jan 1982 500 SEC and need some advise on fuel pressures.

Fuel pump, filter, injectors, etc are new.

I have attached fuel tester to WUR and I get back following values

-Cold : 1,8 kg
-Warm: 3,8 kg
- I close valve on line and get 4,6 kg

I have also attached tester to cold start injector line and get back 4,6 kg

Supposesly I should get 5.0-5.6 kg on the system.

Now the problem, car starts fine, on stand accelerates well but when on drive and pushing throttle more than 1/4 I get king of misfiring and lack of power getting worst when car is warm.

Any advise? Thanks for all your answers