Hi guys,

I am all to aware about the bad reputation these cars have with DPF's, injector washers and so on but try to keep everything at bay myself. I am not a mechanic by trade but am very hands on and not afraid to get stuck in. I had planned on timing belt/drive belts etc this weekend for said vehicle but something happened yesterday.

My wife called my as she was driving on the motorway and told me the car had lost power....was juddering too...she was struggling to get above 30mph and ended up driving home on the hard shoulder to stay safe.

Once home, I inspected the car and took it out for a drive and noted no issues at all with power delivery or smooth running. I checked for fault codes (historic, current and pending) and nothing was shown.

I checked all the likely candidates for lost power such as boost pipes etc but found nothing untoward.

A bit of digging on line returned a-lot of horror stories about the Mazda MZR-CD RF Turbo engine but I tried to stay upbeat and started leaning towards an SCV issue......which is kind of what I am asking.

In your opinion, would a faulty/failing SCV be a likely candidate in the following scenario:

- intermittent lost power (wife advised it almost felt like there was no boost)

- intermittent juddering (wife advised it was like a petrol car off a cylinder)

- no engine light or fault code ( i checked with 2 separate systems)

I have also learnt that the EGR could be a factor so I am hoping to strip that tonight and clean out as much as I can, a cursory glance last night showed that it was not blocked though...built up, yes...but not blocked.

I will focus on the EGR mechanism itself tonight.

Sorry to ramble.....I have been through most, if not all of the extensive threads about this engine and my head is pretty pickled.

Regards

Andy