: Scenic II DCi injectors and pump


Ayrshore
27th January 2011, 08:18 PM
Never loan your car out to someone who can't tell it's a diesel!

04 Scenic 1.9 DCI - friend put petrol in it, ran it till it died.

Now, the whole thing's screwed.

Needs a new pump and injectors.

So - my questions are:

1) Are the injectors coded? (don't seem to be?)

2) Is the pump coded?

3) Are all DCi pumps the same, or not?

Thanks in advance.

madnoel10
27th January 2011, 09:15 PM
Yes it looks like there is a load of damage and if repaired by Renault the cost could probably exceed the value of the car. Renault charge around £3000+.

If the fuel pump has disintegrated internally then the complete fuel system will need to flushed including fuel tank, fuel lines, fuel rail, fuel filter, etc, etc, The fuel pump and injectors will also need replaced.

Yes the injectors are coded but the pump ain't.:)

Haree
27th January 2011, 10:10 PM
Hello,

your best bet will be to take your car to a diesel injection specialist for repair. When I borrow a car I always ask what fuel it takes and likewise when I lend my car out I state its a diesel.

Harry.

Ayrshore
31st January 2011, 09:12 PM
The fuel system is all done - and was full of swarf.

The injectors and pump need replaced, but I needed to know which are coded.

So it's the injectors that are coded, and not the pump?

Are all the DCi pumps the same, or will I have to match up part numbers and stuff?

Motortech Hull
31st January 2011, 09:20 PM
im sure if its a delphi system then all the pumps are identical part no Delphi 9042A070A

as its a 1.9 it will probably be a siemens set up so not sure on that


Injectors are coded the pump is not

impressedorwhat
4th February 2011, 09:57 AM
Had my fuel pump go, was told wear and tear - 120K on a 2005 1.5 DCI !!! Metal filings now in the system :mad: Am told this is a common fault hence you will always see recon fuel pumps offered for sale on EBay.
Renault wanted to replace the complete fuel system at a cost of £3,400, that's more than what I paid for the car. :crazy:
Renault, in my opinion, only employ fitters, not mechanics. They can replace but not repair. Why canít they flush the fuel system out? Why replace everything when only the fuel pump had gone? I can understand an injector or 2 may have to be replaced if the filings got into those and blocked them.
I have now taken my car to an independent. Total cost of repair - including parts and labour is quoted between £500 to £600. I hope to get my car back this weekend.

madnoel10
4th February 2011, 12:59 PM
I ain't defending Renault dealers in any way but similar to most dealers of other makes generally won't fit second hand or reconditioned components.
Once the fuel pump breaks up internally the complete fuel system will be contaminated. It only takes the smallest remaining undetected metal particle to cause problems. I doubt if any garage would gaurantee a flush of the system would ensure all metal particles have been eradicated. The other difficulty is due to the fuel system working on a loop system such particles can be repeatedly recirculated throughout the system.
Cleaning fuel rails and tanks can be notoriously difficult into the bargain. Plus metal filings inside the injectors just don't cause blockages they will also cause serious wear to the internal moving parts and also damage the internals of the fuel rail.

Yes I would agree replacing all the components is expensive and in many cases will outweigh the value of the car. If it were mine I would opt for the cheapest solution but would insist a few extra fuel filters were introduced into the system. One close to the tank outlet and another in the return plumbing. Whilst even this wouldn't gaurantee there would be no future problems hopefully it would minimise the risk.:)

impressedorwhat
4th February 2011, 01:36 PM
Many thanks Madnoel10 for the info. Your reply to my thread is a much better explaination than what Renault gave ! Since the fuel pump malfunction I have learn't a lot about diesels and the common rail system. I understand how the whole system can become contaminated but not being a mechanic, without a detailed explaination any layman like me would think the same - flush the system. I will be speaking with the garage that have my car. Many thanks. Tom

Ayrshore
8th February 2011, 12:42 AM
im sure if its a delphi system then all the pumps are identical part no Delphi 9042A070A

as its a 1.9 it will probably be a siemens set up so not sure on that


Injectors are coded the pump is not

Well, it's a Delphi R9042A040A.

I can get my hands on a R9042A014A cheap, but I'm assuming it's not going to work?

borderhopper
5th March 2011, 11:20 PM
Had my fuel pump go, was told wear and tear - 120K on a 2005 1.5 DCI !!! Metal filings now in the system :mad: Am told this is a common fault hence you will always see recon fuel pumps offered for sale on EBay.
Renault wanted to replace the complete fuel system at a cost of £3,400, that's more than what I paid for the car. :crazy:
Renault, in my opinion, only employ fitters, not mechanics. They can replace but not repair. Why canít they flush the fuel system out? Why replace everything when only the fuel pump had gone? I can understand an injector or 2 may have to be replaced if the filings got into those and blocked them.
I have now taken my car to an independent. Total cost of repair - including parts and labour is quoted between £500 to £600. I hope to get my car back this weekend.



Can I ask where you had this repair done and can you confirm the cost