DPF issue after split vacuum hose
I'm afraid another DPF thread - sorry.
It all started when the vacuum hose that connects to the DPF split and caused a loud air whoosing noise. I belive this pipe is used to detect when the DPF is full and allow the car to perform a regen. After eventually finding this problem and reconnecting it the engine management light came on and the car went into limp home mode.
The error code stated the DPF was blocked. The garage forced a regen and all was well for a few weeks until the same thing happened again. The garage injected some DPF cleaner and advised take the car on some long runs keeping the revs high. After a day or two the engine management light went off and the car was running great.
Again this lasted for about 4 weeks and then engine management light came on and went into limp home mode. I have noticed the car has been smoking a lot more recently as the back of the car is quite black and the fuel economy is poor.
Does this sound like the issue with the vacuum pipe has caused the DPF to clog up too much for the regens to completey clear it, or has my MAF and EGR got clocked up with crap and therefore screwing up the fuel mix and therefore blocking up the DPF? I have been quoted for DPF and EGR removal which I'm tempted by but want to make sure this will cure the problem. The extra smoke out the back and drop in MPG make me think its more than just a clogged DPF.
Any help would be appeciated.