Ds3 1.2 puretech timing belt? Other?

[Matthew_g_l]

Hello, I have a citroen ds3 1.2 puretech petrol. Mileage is 75k and full service history.

Background.
I was getting a some smoke after going downhill and accelerating away at the bottom. Also the car had cutout with engine repair needed. I check the oil which was very low and the fault went away. Then a fault came back so I decided to change the coils and spark plugs. Again fault went.

Then more recently I had it on a diagnostic check after another fault and limp mode. Fault was p0011. So I changed out the variable solenoids x2 and the camshaft position sensors x2. The fault wasn't going away so thought it must be the dreaded wet belt. So today I changed that for a new one along with water pump for good measures. The belt had tiny threads showing, and the width was .40 wider than the new one. I cleaner the strainer in the sump aswell which was very clean actually.

The car is all back together now. Fresh oil and coolant. But the fault is still there p0011 timing over advance bank 1. Also when I last checked it has a p0172 system too rich bank 1.

I'm abit lost on what to do next?

Can anyone advise ?

[Matthew_g_l]

I guess no one can help?

[Steve Walsh]

I haven't had the pleasure ? of pulling a 1.2 apart yet but sound like belt is 1 tooth out. Worth checking.

[GiveMeABreak]

This fault can be the result of destruction of the timing belt along with p0014 if the dashboard warning lamp is also lit.

This refers to a C3 Aircross with the EB2ADT Engine with fault codes P0011 and or P0014 and is quite detailed, so may assist with something you missed (grab a coffee):

The following checks should be made:

Check:

• Of the condition of the vacuum pump oil filter
• Of the condition of the oil pump strainer
• Of the condition of the filters of the 2 variable timing solenoid valves
• Of the condition of the camshaft bearings no. 4

Replacement:

• Of the vacuum pump(if necessary)
• Of the oil pump(if necessary)
• Of the oil pump solenoid valve
• Of the timing belt
• Of the lower oil sump (Steel version only)
• Of the oil filter
• Of the banjo bolt of the turbocharger oil connection and its seals
• Of the engine(if necessary)

Cleaning:

• Of the oil pump strainer(if necessary)
• Of the filters of the 2 variable timing solenoid valves(if necessary)

Draining and filling the engine oil circuit.

Check 1

Remove the variable timing solenoid valves:
Additional parts which must always be replaced: None
In addition, carrying out this repair requires the following operations to be carried out: Observe the safety and cleanliness recommendations

Check the condition of the filters of the 2 variable timing solenoid valves:

• If the filters are partially or totally clogged : Carry out repair 3 + Check 2
• If the filters are not clogged : Do not apply this document ; Carry out in-depth fault finding

Check 2

Drain the engine oil.
Remove the lower engine oil sump

Check the condition of the oil pump (1) strainer(at "b"):

• If the oil pump (1) strainer is partially or totally clogged : Carry out repair 2 then check 4
• If the oil pump (1) strainer is detached or damaged: Carry out check 3
• If the oil pump (1) strainer is not clogged: Carry out check 4

Check 3

Remove the upper and lower cylinder head covers.
Additional parts which must always be replaced: None.
In addition, carrying out this repair requires the following operations to be carried out:

• Observe the safety and cleanliness recommendations
• Perform the operations that are required prior to a disconnection of the ancillaries battery
• Remove the ignition coils

Check the condition of the camshaft bearings no. 4 using a feeler gauge.

(Note: I don't have the video referred to below!)

If the result of the check on one of the crush points (measurement of the size of the red spots crushed in the video using the image below) does not conform: Carry out repair 7 (Replacement of the engine).

If the result of the check on all of the crush points (measurement of the size of the red spots crushed in the video using the image below) conforms : Carry out repair 6 then check 4.

Refit the upper and lower cylinder head covers.
Additional parts which must always be replaced:

• 1 Upper cylinder head cover gasket
• 2 Caps on cylinder head
• 1 High pressure fuel supply pipe

In addition, carrying out this repair requires the following operations to be carried out:

• Observe the tightening torques
• Refit the ignition coils
• Perform the operations that are required following a reconnection of the ancillaries battery

CAUTION: When refitting the 2 cylinder head covers (upper and lower), check that the oil vapours breather hole is not obstructed(at "a"). Risk of self-ignition before spark (rumble) and/or engine oil consumption or engine failure.

Check 4

Remove the vacuum pump:

• Additional parts which must always be replaced : None
• In addition, carrying out this repair requires the following operations to be carried out : Observe the safety and cleanliness recommendations

Check the condition of the vacuum pump filter(at "a"):

• If the vacuum pump filter is clogged : Carry out repair 1 + Repair 4 + Repair 5 + The additional operation
• If the vacuum pump filter is not clogged : Carry out repair 4 + Repair 5 + The additional operation

Repair 1

Replace the vacuum pump.
Additional parts which must always be replaced : 1 Seal (Vacuum pump - Cylinder head).
In addition, carrying out this repair requires the following operations to be carried out :

• Observe the safety and cleanliness recommendations
• Perform the operations that are required prior to a disconnection of the ancillaries battery
• Observe the tightening torques
• Perform the operations that are required following a reconnection of the ancillaries battery

Repair 2

Clean the oil pump strainer using a brake cleaning product.
CAUTION: Do not use compressed air
Refit the lower engine oil sump.

Repair 3
Clean the filters of the control solenoid valves using a brake cleaning product.
CAUTION: Do not use compressed air

Refit the variable timing solenoid valves.
Additional parts which must always be replaced:

• 1 Variable timing exhaust solenoid valve seal
• 1 Variable timing inlet solenoid valve seal

In addition, carrying out this repair requires the following operations to be carried out:

• Observe the safety and cleanliness recommendations
• Observe the tightening torques

Repair 4

Replace the oil pump solenoid valve.
Additional parts which must always be replaced:

• 1 Coolant pump drive belt
• 6 Accessories drive pulley fixing bolt

In addition, carrying out this repair requires the following operations to be carried out:

• Observe the safety and cleanliness recommendations
• Perform the operations that are required prior to a disconnection of the ancillaries battery
• Observance of the tightening torques
• Perform the operations that are required following a reconnection of the ancillaries battery

Repair 5

Replace the timing belt.
Additional parts which must always be replaced:

• 1 Crankshaft seal ring (Timing side)
• 1 Seal (Timing cover)
• 1 Belt (Coolant pump drive)
• 6 Bolt (Crankshaft pulley / Crankshaft hub)
• 1 Bolt (Crankshaft hub / Crankshaft)
• 1 Bolt (Camshaft dephaser / camshaft)
• 1 Seal (Upper cylinder head cover)
• 2 Caps on cylinder head

In addition, carrying out this repair requires the following operations to be carried out:

• Observe the safety and cleanliness recommendations
• Perform the operations that are required prior to a disconnection of the ancillaries battery
• Observe the tightening torques
• Perform the operations that are required following a reconnection of the ancillaries battery

Repair 6

Additional parts which must always be replaced:

• 1 Engine ring seal (Crankshaft end)
• 1 Seal (Timing cover)
• 1 Engine ring seal (Gearbox end )
• 1 Seal (Upper oil sump )
• 1 Seal (Oil pump)
• 1 Belt (Coolant pump drive)
• 1 Bolt (Crankshaft hub / Crankshaft)
• 6 Bolt (Ancillary drive pulley / Crankshaft hub)

In addition, carrying out this repair requires the following operations to be carried out: None:

• Observe the safety and cleanliness recommendations
• Use the products recommended by the manufacturer
• Observe the tightening torques
• Refit the engine ring seal before the seal dries.(engine flywheel side)

Repair 7

• Remove the engine-gearbox assembly.
• Replace the engine.
• Refit the engine-gearbox assembly.

Additional operation

Refit:

• The drain cap fitted with a new seal
• The new oil filter

Top up the engine oil.

Refit:

• The oil filler cap
• The manual dipstick

Warm up the engine, while remaining stationary, until the fan assembly cuts in for the first time.
Remove the manual dipstick.
Undo the oil filler cap.
Slacken the drain cap.
Drain the engine of all of its oil (Wait 10 minutes).

Remove the catalytic converter.

Additional parts which must always be replaced:

• 1 Collar (Catalytic converter / Turbocharger)
• 1 Collar (Catalytic converter / Flexible exhaust hose)

In addition, carrying out this repair requires the following operations to be carried out:

Additional operation
Refit:

• The drain cap fitted with a new seal
• The new oil filter

Top up the engine oil.

Refit:

• The oil filler cap
• The manual dipstick

Warm up the engine, while remaining stationary, until the fan assembly cuts in for the first time.
Remove the manual dipstick.
Undo the oil filler cap.
Slacken the drain cap.
Drain the engine of all of its oil (Wait 10 minutes).


Remove the catalytic converter.

Additional parts which must always be replaced:

• 1 Collar (Catalytic converter / Turbocharger)
• 1 Collar (Catalytic converter / Flexible exhaust hose)

In addition, carrying out this repair requires the following operations to be carried out:

• Observe the safety and cleanliness recommendations
• Perform the operations that are required prior to a disconnection of the ancillaries battery
• Remove the upstream and downstream oxygen sensors
• Observance of the tightening torques
• Refit the upstream and downstream oxygen sensors
• Perform the operations that are required prior to a disconnection of the ancillaries battery

Replace:

• The seals (1)
• The bolt (2)

Refit:

• A new oil filter
• The drain cap fitted with a new seal
• The catalytic converter

Top up the engine oil.

[Djandree]

From my experience the problem with oil starvation will be visible on the marked camshaft. Apparently oil is going thru variable timing solenoid valves to the camshaft (arrows) and the weakest point is circled. Bearing might be sized or even some deposits on the camshaft If your wet cambelt started shedding rubber bits to the oil sump, it might block oil supply chain hence problem on the top of the engine