V40 1.9D won't rev freely and puffs blue smoke

[Dirty Diesel]

Originally Posted by bobthecabbage

There are quite a few posts here which I haven't read through so forgive me if the question has already been answered.

In your photo starting from the left is the solenoid for the shutoff valve on the intake. As I remember, it is open on one port and the other port is connected to the vacuum pipe for the shutoff valve.

The middle one being the boost solenoid has one pipe connected just after the MAF, one to the vacuum line and one to the turbo actuator. There should be vacuum on one of these pipes at all times (the vac line). Also on my car when you start up, the turbo actuator will slowly rise up (as the vacuum builds) and it will bounce up and down when you rev it.

The one on the right being the vacuum reserve tank has one end connected to the vacuum line and the other I think is connected to the pipe for the stop solenoid?

If you are getting no vacuum to your boost control solenoid, turbo, or shutoff valve then this is where you need to start working.

On my car I found that the vac line with the 90degree bends in was practically collapsed on the bends so replaced it.

If you have proper brake servo operation then that suggests your vacuum pump is working so you are either losing it along the way or their is a leak in the system.

You need to solve this first before you go any further. You simply must have vacuum to the boost solenoid!

I'm not really sure how your engine management light is not coming on? I can only assume there is an electrical fault somewhere!

I've tried leak testing the vacuum lines and couldn't find any that leaked. Some were worn on bends or where they'd rubbed in other pipes etc, but couldn't find any with leaks. Where do I go from here as regards the vacuum system?