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Ford Kuga: PCV breather diaphragm rupture, whistle and oil use (Kuga TE 2.5 B5254T3 five-cylinder turbo petrol)

PCV breather diaphragm rupture, whistle and oil use (Kuga TE 2.5 B5254T3 five-cylinder turbo petrol) is a common engine fault on the Ford Kuga on the 2009–2013 cars, and we rate it major. Putting it right costs $600 to $1,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 17 documented faults on the Ford Kuga.

Vehicle
Ford Kuga
Engine
2.5L
Years
2009–2013
Fuel
petrol
System
Engine

This page covers the Ford Kuga as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Ford Kuga faults17 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph of the Turbocharger or PCV / oil separator yet. We would rather show none than show a picture of a different part.

What goes wrong

The Kuga TE's 2.5 B5254T3 five-cylinder turbo petrol has its crankcase breather (PCV) diaphragm built into the oil filter housing, and the diaphragm can split. Oil is then pulled into the intake, so the engine uses oil, can smoke blue, loses boost and may whistle. Left alone, the extra crankcase pressure can push out oil seals. There is no recall; the fix is a new oil filter housing and breather assembly.

What you would notice

  • High-pitched whistle or whine from the engine that rises with revs
  • Engine using oil between services
  • Blue smoke from the exhaust
  • Feels flat, less boost than expected
  • Engine warning light

How to check it

Where to look. Engine bay, oil filter housing and breather on the engine block

With the engine idling, listen for a whistle or buzz from the engine bay. Carefully open the oil filler cap at idle: if the whistle or idle changes sharply, or the cap is strongly sucked down, the diaphragm is suspect. Look for oil wetness around the oil filter housing and front and rear engine seals. On the test drive, check it pulls strongly and watch the exhaust for blue smoke. Ask how much oil it uses between services and whether the oil filter housing or PCV has been replaced. If a workshop inspection is possible: have the crankcase vacuum or pressure checked and fault codes read.

Parts involved: Turbocharger, PCV / oil separator.

What it costs to put right

$600 to $1,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Has the PCV breather or oil filter housing been replaced?”
  • “How much oil does it use between services?”
  • “Any whistling noise from the engine?”

Now check the Ford Kuga you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in the sources below. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them.

Ford Kuga buyer questions

Is pcv breather diaphragm rupture, whistle and oil use (kuga te 2.5 b5254t3 five-cylinder turbo petrol) serious on a Ford Kuga?

We rate it major and common on the Ford Kuga. The Kuga TE's 2.5 B5254T3 five-cylinder turbo petrol has its crankcase breather (PCV) diaphragm built into the oil filter housing, and the diaphragm can split. Oil is then pulled into the intake, so the engine uses oil, can smoke blue, loses boost and may whistle. Left alone, the extra crankcase pressure can push out oil seals. There is no recall; the fix is a new oil filter housing and breather assembly.

How much does it cost to fix on a Ford Kuga?

$600 to $1,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Ford Kuga years are affected?

Our research records this fault on the 2009–2013 Ford Kuga. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

With the engine idling, listen for a whistle or buzz from the engine bay. Carefully open the oil filler cap at idle: if the whistle or idle changes sharply, or the cap is strongly sucked down, the diaphragm is suspect. Look for oil wetness around the oil filter housing and front and rear engine seals. On the test drive, check it pulls strongly and watch the exhaust for blue smoke. Ask how much oil it uses between services and whether the oil filter housing or PCV has been replaced. If a workshop inspection is possible: have the crankcase vacuum or pressure checked and fault codes read. Look here: Engine bay, oil filter housing and breather on the engine block