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BEFORE YOU START
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The below works concerned a Peugeot 5008 equipped with a turbo-charged EP6 engine (156 HP version).
Same or similar engine can be found on Peugeot 207, 208, 308, 508, 3008, 5008 and Citroen C4, C4 Sedan, DS3, DS4, DS5 also the Mini Cooper S.
Same or similar engine can be found on Peugeot 207, 208, 308, 508, 3008, 5008 and Citroen C4, C4 Sedan, DS3, DS4, DS5 also the Mini Cooper S.
DISCLAIMER:
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
Our pictorials are of informative nature and do illustrate works carried out by ourselves at our own premises for our own use and satisfaction.
Readers who envisage to carry out similar works inspired by the below method shall do this at their own risks and liability.
EP6 timing chain guides renewal
- Replace the timing chain guides with new ones. These are so cheap as spares and should be systematically replaced upon any intervention involving the timing chain removal.
- They are sold separately but the set includes 2 lateral guides and an anti-knock pad that fits on top of the timing chain.
- Start by fitting the 2 guides together as shown in the right picture.
Introduce the timing chain into the assembled guides and push these downward.
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Keep pushing them gently until they reach their intended place.
Do not refit their holding bolts yet, leave them loose. |
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EP6 engine timing setting
As a reminder, the engine was pegged (left) using the specific peg available within the timing tool kit while preparing for the cylinder head refitting. See our EP6 head gasket replacement page.
Bring the camshafts to the timing setting position using a 27 combination spanner and by gently rotating them until the ring shown in the middle picture just before the spanner has its round face oriented downward and flat face upward.
Insert the EP6 camshaft blocking tool without forcing it at all. Adjust the camshaft positions with the spanner until it goes easily into its intended place (right) and fix it with the supplied bolts.
Bring the camshafts to the timing setting position using a 27 combination spanner and by gently rotating them until the ring shown in the middle picture just before the spanner has its round face oriented downward and flat face upward.
Insert the EP6 camshaft blocking tool without forcing it at all. Adjust the camshaft positions with the spanner until it goes easily into its intended place (right) and fix it with the supplied bolts.
Time now to prepare the camshafts sprockets which should be degreased prior to refittting.
Use a carb spray to clean them well and dry them until no oil or grease of any kind remains there.
Use a carb spray to clean them well and dry them until no oil or grease of any kind remains there.
Also degrease the camshaft bearings where the sprockets will be in touch.
Take your time and make sure the bearing faces are clean, dry and free from any oil or grease.
Use compressed air to complete the cleaning.
Take your time and make sure the bearing faces are clean, dry and free from any oil or grease.
Use compressed air to complete the cleaning.
THIS IS A VERY IMPORTANT STEP AS ANY OIL OR GREASE COULD LEAD TO A TIMING SETTING CHANGE UPON TURNING ON YOUR ENGINE.
EP6 camshaft sprockets refitting and tightening
- Refit first the intake valves camshaft sprocket which should be properly oriented. At the same time, have the timing chain sitting on it as you won't be able to do so after you fix it to the camshaft.
- Note well in the middle picture how the small arrow has been aligned with the cylinder head top plan.
- This to coincide the 4 holes that allow the oil to flow into the VANOS dephaser of the sprocket with the opposite 4 holes of the camshaft.
- Tighten the intake sprocket bolt to contact by hand.
- Refit in the same manner the exhaust camshaft sprocket with no particular orientation and also while having the timing chain refitted on it and tighten the sprocket bolt by hand until contact and while it can still rotate.
Refit the timing chain guides bolts (left) and fit the dummy timing chain tensioner supplied within the EP6 engine tool kit (right).
Tighten the chain by turning the dummy tensioner screw by hand until you notice the chain is tight.
Do not use the timing chain tensioner at this stage, only the dummy tensioner and do not over-tighten the latter.
Apply just enough pressure to have a good tension of the chain.
Tighten the chain by turning the dummy tensioner screw by hand until you notice the chain is tight.
Do not use the timing chain tensioner at this stage, only the dummy tensioner and do not over-tighten the latter.
Apply just enough pressure to have a good tension of the chain.
Tighten the inlet sprocket first and exhaust sprocket after to the required torque WHILE APPLYING AN OPPOSITE FORCE TO THE CONCERNED CAMSHAFT WITH THE 27 SPANNER.
This is to avoid using the camshaft blocking tool to counter the tightening torque.
This is to avoid using the camshaft blocking tool to counter the tightening torque.
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Buy your new cylinder head from our partners, make sure of vehicle compatibility prior to plcing the order:
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![](http://ae01.alicdn.com/kf/HTB1q2yKSFXXXXXaapXXq6xXFXXX6.jpg_140x140.jpg")
![](http://ae01.alicdn.com/kf/S11c19f085b4b423fb29fe21af92734adj.jpg_140x140.jpg")
![](http://ae01.alicdn.com/kf/HLB1DT1wadfvK1RjSszhq6AcGFXax.jpg_140x140.jpg")
Refit the timing chain anti-knock pad (left).
Remove the dummy tensioner and refit the timing chain tensioner bolt. Replace it with a new one if your engine has more than 50,000km or replace at least its seal.
Remove the dummy tensioner and refit the timing chain tensioner bolt. Replace it with a new one if your engine has more than 50,000km or replace at least its seal.
Final checklist and verification for the EP6 timing setting
Now do the following:
- Remove the EP6 timing tool and make sure it pulls out easily without efforts. Do not dismantle the tool, keep it assembled.
- Unpegg the engine while also making sure the peg goes out easily.
- If any of the above tools is stuck, you have to repeat the sprocket tightening process
- Turn your engine by hand clockwise 2 turns and pegg it again.
- Make sure the camshaft blocking tool refits easily by hand. Do not force it, it should go in there by a simple hand push.
- Repeat the timing setting process if the tool does not fit in place as easily.
- Once done, remove again the EP6 peg and camshaft blocking tool and reassemble all.
- Start your engine after reversing all other dismantling steps, refilling and bleeding the engine coolant, etc. and make sure no unusual noise is there. This is the very last check !
