P1455 Brake booster error and multiple misfires....

[PKN]

My problem started with the brake booster fault light followed quickly by the engine check light. The car started misfiring badly. I checked the usual places for broken hoses and found one down by the brake booster. I repaired it, cleared the error codes and the servo error light came back within a couple miles. I cannot find any more broken or damaged pipes but the misfires are very bad now and the Durametric is showing them on 4 cylinders (both banks). It almost feels like there is water in the gas. The car runs reasonably smoothly over 2000 rpm. Any ideas where or what to check next?

Thanks

PKN

[PKN]

I found no less than two broken vacuum pipes down behind the servo pump. I replaced the broken pipes with 3/8 compressor hose with steel fuel pipe inside it to stop it collapsing and used clamps on every joint. I had everything I used to hand so it cost me only time and I suspect the repair will outlast the original parts.....

Steve