Where is the swirl control valve located?

Where is the swirl control valve located?

This system has a swirl control valve in the intake passage of each cylinder. While idling and during low engine speed operation, the swirl control valve closes.

What does a swirl control valve do?

While idling and during low engine speed operation, the swirl control valve closes. Thus the velocity of the air in the intake passage increases, promoting the vaporization of the fuel and producing a swirl in the combustion chamber.

Can you clean swirl flaps?

Cleaning your Intake Manifold and Swirl Flaps The moderately expensive alternative is to if possible manually clean them. The most cost-efficient solution would be our engine carbon cleaning service.

How do you know if your swirl flaps are broken?

Cause:- Charge air pressure in manifold leaking through worn swirl flap bearings. There may be other symptoms whilst driving, such as lumpy running, hesitation and poor fuel economy, and an oily fume smell inside the car whilst the engine is running.

How do you test swirl flaps?

Look into the area below the glow plugs. There you can see the swirl flaps from the top as well as the operating rod. The rod either sits on top of the swirls, or it lies next to them. If the operating rod still sits on the swirl, continue to point 5, otherwise to point 3.

Does Freelander 2 have swirl flaps?

Glad to see the Freelander doesn’t have the swirl flap issue, its an easy mod to prevent problems, but if you ingest a flap before you get to mod the manifold, it is very expensive.

What size swirl flaps do I need?

There are two sizes of swirl flaps fitted to BMW vehicles 22mm and 33mm; as a general guide pre 2005 models are normally fitted with 22mm size, 2005-2006 either size could be fitted to your vehicle, 2006+ 33mm likely to be fitted.

How long do N47 engines last?

N47 engines have no other design issues and can easily run 200,000 miles if maintained correctly plus it is your original engine with traceable service history and mileage.

Are N47 engines bad?

Yes, N47 engines can suffer, but in fact most probably do not. However with these engines, it would be wise to have a warranty in case the worst happens!

How do I know if I have a N47 engine?

The easiest way to tell are as follows:

1. Exhaust pipe – Cars with the oval shaped exhaust pipe have the N47 engine and DPF fitted.
2. Start/stop – Cars fitted with the N47 engine also have Efficient Dynamics which means the engine will cut out automatically to save fuel when stationery in traffic and car is put in neutral.