Turbo Replacement & Broken Rocker
Posted 29 April 2019 - 06:31 AM
Posted 29 April 2019 - 11:29 AM
If I have got the right engine, it has a book time of about 3 hours and is done from underneath. The following is copied from the Citroen service book procedures for a Relay 2, 2.0 hdi:
- The exhaust pipe
- The turbocharger inlet duct
- The turbocharger outlet duct
- The bracket (between turbo and exhaust)
- The turbocharger oil supply pipe (on the engine)
- The turbocharger oil return pipe (on the engine)
- The fixing nuts of the exhaust manifold
- The spacers
- The exhaust-turbocharger manifold assembly
- The turbocharger
- The exhaust manifold
Posted 29 April 2019 - 01:01 PM
Posted 01 May 2019 - 01:44 PM
Posted 01 May 2019 - 08:46 PM
I had a turbo fail on a petrol Saab on the M6 at Penrith. For a few months there was smoke from the exhaust when starting up and when accelerating but on the M6 it got a bit noisy and on the slip road the car was surrounded by smoke so the RAC recovered the car. To check a worn turbo there might be play in the rotor due to the worn bearings. If it is really bad the rotor can break up and put bits in the engine.
Posted 01 May 2019 - 08:56 PM
Posted 02 May 2019 - 06:19 PM
I can only assume the turbo casing has broken or the seals have failed thereby allowing exhaust gases to escape into the inlet chamber. I've never heard of this before but nothing totally surprises me anymore.
I hope the weather is better tomorrow so I can try to get to the bottom of this.
Edited by heraldsteve, 02 May 2019 - 06:20 PM.
Posted 04 May 2019 - 09:09 AM
Oh well, I'll by trying again today to remove the turbo even though I can't see how it would cause the loud intake noises. If anyone has any thoughts on this I would appreciate hearing them as I'm baffled.
Posted 04 May 2019 - 10:06 AM
The vacuum will be from the pistons going down and sucking in air so should be normal. I do not know about the thumping noise though but a search on turbo thumping nose suggested it could be a worn rocker so a valve is not opening - have a read of this as an example https://fordtransit....hp?f=5&t=139627.
If it is a worn rocker then the turbo might be ok.
Posted 04 May 2019 - 11:27 AM
Edited by heraldsteve, 04 May 2019 - 11:30 AM.
Posted 06 May 2019 - 07:55 AM
Posted 06 May 2019 - 12:10 PM
Posted 06 May 2019 - 04:53 PM
Good job you checked the rockers, otherwise you would have replaced the turbo and still had a problem. There are places that repair turbos and it might be worth getting one to check yours in case it still has a lot of life left, unless you can get one cheaply.
Posted 06 May 2019 - 05:04 PM
It's going to cost a tidy penny by the time I've bought everything I need but it's a good campervan overall so it's worth doing despite it's age.
Posted 12 May 2019 - 07:09 PM
The service.citroen diagrams show it as a separate item. Am I being stupid and missing something obvious?
Posted 12 May 2019 - 08:50 PM
The sensor part 9 is held in place by the clip part 11 which slides in the slots. The seal 10 prevents leaks.
Posted 12 May 2019 - 08:54 PM
Posted 13 May 2019 - 06:35 PM
I'm now wondering if having the battery disconnected for several days has caused a problem with the immobiliser not recognising the key. Is this possible and if so how do I reset it?
The only thing I can see that might cause a problem is that I can't find a home for one of the control wire connectors. From onr loom I have a connector to the alternator, one to the fuel pump, one to the starter motor, one to the sump (low oil level?), one just above the oil filter (oil pressure) and one to the block (not sure what this one does) and one seemingly going nowhere that I can see. I'm sure it was plugged in previously as the connector looks very clean. It's too short to go very far but I still can't spot it. Any suggestions where this one should go?
Sorry to ask two questions in one post but thought they might be related.
Posted 13 May 2019 - 11:01 PM
If the connector goes to the crankshaft speed sensor that would prevent it starting. The sensor could be on top of the bell housing. If you look at the parts diagrams find the sensors under Mechanical, Air and Fuel Supply, INJ calculator sensor.
Posted 14 May 2019 - 05:51 AM
I will try again today to find it - sometimes you just need a few hours away - it has to go somewhere.