I've been too busy to touch this until to - day I added a nice American made liquid filled 0 ~ 60 # pressure gauge and with either the old valve or a brandy new (sealed,can't be adjusted) factory valve , the gauge twitches quite a bit at idle , once revved up it smooths out a fair bit but the gauge's needle never really is steady .

Is this O.K. ? .

The old original valve with hand streatched spring varies between 10 ~ 23 PSI , the new one from Mercedes goes from 0 ~ 20 PSI .

I'm wondering if I have another problem I should address .

Clean fuel and filters .

Comments , opinions and ideas please .

TIA ,

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better