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Old 13-05-16, 12:41 PM   #1
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Default 308 1.6 petrol - Oil leak

Hi all,

A family member of me have a Peugeot 308 -08, with an 1.6 litre petrol engine under the hood which needs some TLC to get back to its glory days. It was bougth for approx 6 months ago and the current owner had it Mot-ed a few months ago. She got an advisory for a minor oil leak from the engine which needs to be fixed as the car makes a quite mess in its parking lot now. I have removed the engine undercover and it seems to me that the leak comes from the upper part of the engine on its backside on the timing chain side. I was in contact with the garage which did the last service on this car in an attempt to reveal some of its service history. They told me that the car was diagnosed with an oil leak from the head gasket during the last service but the customer did not want to have it repaired. The diagnozis seems to be quite rigth. The owner shall take action to the previous owner and used car dealer regarding this issue, but that will be a separate story... It seems that I have to jump into the HG change on this car anyway. So. I have done about 10 head gaskets on other makes during the years, so I guess I should be up to the job after some studying and research for this specific engine. Then I have the questions.... Have you guys any important advice for this job? Can the timing chain be removed and put back in place without the cam locking tools? Is there any improvements done to the HG after the initial design? What other gaskets should be replaced during the job? Seems to me that it should be a good idea to replace the timing chain with its guides and tensioner as I have read several placed that this one has issues. Any other known faults/issues with this engine type?

All advice will be greatly appreciated

Last edited by Beinet1; 13-05-16 at 12:47 PM.
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Old 18-05-16, 05:12 AM   #2
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Not to impressed over the feedback on this forum.....
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Old 18-05-16, 10:12 PM   #3
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For what it is worth,I have a 308 with the same 1.6 vti engine but have yet to do a head gasket change or renew the timing chain.But it is a well known fact that neither of the tasks you mentioned should never be attempted without the correct camshaft locking tools.Having looked into the job in case I ever need to it I found that the Haynes manual on this model gives you a very good step by step guide on how to do the job.
Yes there seems to be a well documented problem that some have experienced with the timing chain,but it seems a lot of the problems may well have been avoided if the engine has a regular oil and filter changes using the correct grade and good quality oil and filter,by regular I am saying every 5/to 6000 miles.
If I were doing the job I would certainly renew the chain,guides,and tensioner,plus have a good check of the camshaft sprockets.
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Old 20-09-16, 08:25 AM   #4
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Hi,

Job done yesterday. It was a time consuming task, but pretty doable for the experienced DIY mechanics. I did not have the special locking tools available, but made a locking pin for the crankshaft in a lathe similar to the "real" one. The cams was properly marked before disassembly and everything lined up perfectly on reassembly. Cam chain, guides and tensioner was replaced on reassembly. The old guides looked worn to me, but I have to admit that I don`t know how worn ones looks. They had deep grooves from the chain. The engine sounds better upon startup now than earlier so I am happy with the result so far. On removal, I found the old tensioner completely loose. It could be unscrewed by hand!! I think the oil leakage must have come from this one. I thought of only replace the tensioner and put all back together, but I had came so far in the operation that I did the gasket anyway to be sure everything is fine.

A few pics:

Head of tensioner (hex) seen on the back side of the cylinder head. Probably the main cause of the oil leak as it was loose and could be unscrewed by hand only.


Block deck prepared for re-assembly:


Cylinder head prepared for re-assembly:


New Elring gasket in place:

Last edited by Beinet1; 20-09-16 at 09:08 AM.
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Old 20-09-16, 08:25 AM   #5
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New chain + guides:


Old chain + guides:


Wear marks in old guides:


Everything timed and tightened up, ready for putting all the other bits back in place:
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Old 20-09-16, 12:11 PM   #6
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Beautifully photographed and documented, thank you.
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Old 20-09-16, 09:29 PM   #7
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Well done,glad it's gone well for you.Great pics and info,always nice to hear and see the final bit of the jig saw.Thanks.
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Old 22-09-16, 06:15 AM   #8
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Hi,

Thanks for the replies

I am not to happy at the moment. The car is not behaving like it should. There is some rattling from the top cover/chain around 1600-2000 rpm`s and the car does not pull as well as it should uphill. It makes me think that something is still not 100%. I think the first thing to check would be the cam timing and the pulleys/dephrasers.

Anybody knows how to check reset the dephrasers?
Does the ECU needs a reset/recalibration after an operation like this? How to?

Any advice would be greatly appreciated

Update:

I was able to borrow the cam locking tools from the local garage this weekend. Will check things up then. Hopefully it is the timing that is slight out for any reason.

Last edited by Beinet1; 22-09-16 at 09:32 AM.
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Old 22-09-16, 08:56 PM   #9
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Quote:
Originally Posted by Beinet1 View Post
Hi,

Thanks for the replies

I am not to happy at the moment. The car is not behaving like it should. There is some rattling from the top cover/chain around 1600-2000 rpm`s and the car does not pull as well as it should uphill. It makes me think that something is still not 100%. I think the first thing to check would be the cam timing and the pulleys/dephrasers.

Anybody knows how to check reset the dephrasers?
Does the ECU needs a reset/recalibration after an operation like this? How to?

Any advice would be greatly appreciated

Update:

I was able to borrow the cam locking tools from the local garage this weekend. Will check things up then. Hopefully it is the timing that is slight out for any reason.
Yes,getting the cam locking tools is a good idea,and may sort your problem as the locking tools are vital for the timing set up on the VTI engine.
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Old 22-09-16, 09:16 PM   #10
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U time it up before without the locking tools? Or an eBay special or something ?

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