Make sure the pickup hose in the fuel tank is not collapsing. Replace the fuel filter. Make sure the Lambda system is running and the frequency valve is buzzing. Check and be sure there are no vacuum leaks. Look to be sure the hole over the mixture screw is plugged. You may require an adjustment of the mixture screw since you had the unit changed. You may also have problems in the ignition system. Pull the plugs and either clean and regap or replace. Test or replace the ignition coil. If the ignition wires are old replace them, the cap and rotor. Maybe the air filter is plugged up. Check the timing and the mechanical and vacuum advance. In short maybe you just need a complete tune-up. You may also need the injectors cleaned and tested. My guess is the P.O. knew he had a problem and thought he could fix it with a control pressure regulator. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "deepdmc" <deepdmc12@xxxx> wrote: > > > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/