e320 cdi w210 model intetmitant boost fault

[adaptorman]

hi having a on going issiuse with my merc .its bin to 6 garage .with the engine going into limp mode (fault shows as a intermitant low boost fault ) garages have so far changed maf.egr valve and cleaned inside.accelerator unit.engine and gearbox serviced .and injectors cleaned as i had a intermitant miss on idiol .,odd thing is since these were cleaned its going into limp mode .dose anyone know the correct injector pressures please

 

[Dieselman]

If it starts and doesn't smoke I doubt it's the injectors, more likely sticky EGR valve or intake flaps.

What is the actual code that is registered, if it's just low boost then look for split pipes or intercooler, or sticky variable vane ring.

 

[adaptorman]

if i clear the low boost fault code .it will drive boost for a while .so its not a boost pipe or egr as these have been replaced this is the early cdi with vacume egr .regards intake flaps are u sure mine has these as theres nothing regards on the inlet side .reason i say injectors .it dosent smoke etc but the injector pressure isnt constant .(up and down)