C5 Hdi Injector Bleed Off Pipe Connections Confusion.

[John.A.S.]

Hi,

I have a C5 HDI 2ltr 2006. VTR 138bhp

Today I had smoke from under the bonnet and a smell of Diesel. On checking one of the small plastic connectors that link the bleed off  pipes to the injectors had popped out.

I checked the other three injectors and the "u" shaped locking mechanisms (looks like a square headed staple) were fully pushed in against the injectors, so using a piece of wire (the only thing I had) I managed to pull out the locking mechanism, I pushed in the plastic connector and then the locking mechanism but I could not get the plastic connector to stay in.

Green flag arrived and had the same problem, then said he had fixed it, for some reason he said the locking mechanism works the other way round, push in the locking mechanism, insert the connector and then pull the lock out.

When I got home I checked and it seem to be right. When you pull the lock out a raised section appears which locates in the plastic connector. 

The Haynes manual says you push down on a wire under the injector to release the connector but that is almost impossible to get at.

I am still not convinced, why have three locking mechanisms working fully pushed in and one work the opposite way.

I anyone has the same model can they have a quick check which way round they are. Better still if anyone knows without having to check. Thanks John.

[C 5 Estate]

I have only just read your post.

 

Will have a look over next few days.

 

Tim

[John.A.S.]

Hi Tim,

Yes finally got it sorted. I went to Merlin Diesel (Walton summit near Preston). They explained that the retaining clip once fitted is locked in position hard against the injector. To release the pipe:- under the shoulder of the injector, part of the retaining clip protrudes, this part you push down to release the pipe. They said people are always trying to force the clip out to remove the pipe.

They gave me a new clip.

The faulty clip was on the injector nearest the cambelt and you can't get the clip out as its to near the plastic housing that forms part of the rocker box (but you would not recognise it as such) and to remove that you have to remove the inlet manifold, pipes, wiring looms etc and then you need a replacement gasket set at around £40. So I took it to my local garage, they extracted the injector and fitted the clip as it should be and charged me £35..  

Thanks for your interest.

John. 

[C 5 Estate]

Thanks for the feed back John, I will place Merlin Diesel on my list of useful contacts.

Tim