Fuel smoke at around boost on/off pressure.

[Husbandofstinky]

Any ideas please?

Have had this on the car for almost a year now. It is nothing serious, just annoying and happens at the pivotal on/off boost pressure point.

All I can think of is a possible air leak. Everything else is absolutely fine, hardly any smoke on full song, fuel consumption great and no other known symptons.

Forgot to mention, its like the start up puff first thing in the morning which incidentally is quite noticable now.

 

[jonjay]

Probably not the problem however could be n75 valve on its way out?

What fuel do you normally use? I recently found that BT Ultimate is cleaner fuel than V-Power for my car. How often to do give the car some welly?

 

[Husbandofstinky]

Sorry - work gets in the way a bit.

Fuel used is standard shell (99% of the time) with Millers.

On testing - following a good boot - its fine but then its back again within a mile or two of normal driving. Its more noticeable in town when the turbo's not really working. Almost like a build up.

MPG is showing a ridiculous 49mpg at the moment just on a 7 mile stretch to and from work. Last year at best this was 47mpg. Not complaining but just don't like the unexpected. I did a reset just before Christmas.