Engine: D5: Injector question

[steveshaw]

S60 D5 2002 - 274,000mls
One of my injectors is leaking back too much and affecting the starting.
I can get it "reconditioned" for £95+ vat, could anyone tell me if the "class rating" of the injector will be affected during the reconditioning.
Is a good rebuild technician able to recondition an injector so that it will perform to the original Bosch class 3 specification? or do you get what you get?
I am assuming that the class number is added to the injector when new, as a result of a calibration test.
My prefered choice would to buy a used class 3 injector, preferably from a fellow forum member and fit that, so if anyone is prepared to sell me one, please get in touch.
Thanks for looking
Steve

[outnumbered]

for my two pennies worth you can have them reconditioned but they lose the grading,there has been members that have gone down this route fitted them then had diesel knock. i am of the understanding that you can only get class 1 and 2 now and i have heard that class 2 is a replacement for the 3 if that is the case there are more second hand class2 than class 3.i am sure Clan will comment.
mike

[dave_s13]

Ooh eck, it's a right can of worms this injector thing.

Is there a sticky for it?

I am having a similar dilema at the moment and made the mistake of not asking on here first.

Apparantly the belt and braces approach is to buy an injector kit from Volvo. This includes the injector (coded to match you others), a new fuel line for that cylinder, spring clip and seals/mounting screws.

This costs over £300 from my local Volvo dealer though (not sure about Rufe).

At the other end of the spectrum is the "Yorkshire way" i.e. source a second hand injector, reuse the pipe and fittings and try your luck.

I've gone for the middle ground with a new fitting kit from Volvo (spring clamp, washers, seals, nuts), a "new" recon injector from PF jones diesel specialist and intend to re-use the pipe. Trouble is I don't know if the injector I've bought is coded or not and this, and the using the old pipe may, be my undoing. Bear in mind you cannot buy individual fuel lines you can either buy 1,2,3 cylinders as a pack (£80 approx) or 4 & 5 cylinders as a pack.

I'll be fitting it in the morning so will let you know how I get on.

For info I did notice some being flogged on ebay but I think they are class 2.

Good luck anyway.

[dave_s13]

Posted after Mike,

Check ebay, might be worth a punt. There are some class 2 injectors on at the moment for £45. On a quarter of a million mile car you've got to consider using the "yorkshire" method really.

[outnumbered]

i have just confirmed with Harratts @ Wakefield you can still get class 3 injectors but you can use class 2, if you are changing more than three class 3 with class 2 then the class in the injector settings will have to be changed to class 2 with Dice.i would confirm that with your dealer.
mike

[dave_s13]

Out of interest Mike.

What it the method used to "class" the injectors.

Are they hooked up to some kind of test bench and the nozzles adjusted to whatever flow rate corresponds to a certain class. You mention DICE, what is that and how's it used?

Cheer.

[micken]

The situation is as Mike and Dave say. I replaced an injector last year and I believe that the injectors that Volvo currently supply are all reconditioned and class 2. I got mine from Rufe and there is a surcharge so that you return the faulty injector. The injectors from Volvo come with full fittings, including a deformable clamp for torquing the injector down onto its seat. Also included is a new diesel supply pipe that runs from the common rail to the injector. The connectors on this are annealed and when torqued up they deform to the injector face and are supposed not to be reused.

The ones supplied as grade 2 equivalents are supplied on the basis that up to two of these can be used with either three grade 1 or three grade 3 injectors without having to reset the cars calibration. If you put three grade 2 injectors onto a car that was running on either grade 1, or grade 3 injectors the the car needs to be recalibrated in favour of the replacement injectors.

DICE is the hardware used to communicate with the obd2 port on the car and interface with VIDA software running on Windows XP Pro. It's what the dealers, some independent garages and some of us use.

The injectors are classed/coded on fuel supply rate.

Hope this is clear and helps.

Mick

[outnumbered]

Originally Posted by dave_s13

Out of interest Mike.

What it the method used to "class" the injectors.

Are they hooked up to some kind of test bench and the nozzles adjusted to whatever flow rate corresponds to a certain class. You mention DICE, what is that and how's it used?

Cheer.

the different classes are down to the fuel rate on tickover i believe so each class will have a different flow and grade, that's all i no Clan is the expert on this and i am sure he will pitch in .
Dice or VCT 2000 is what volvo use for diagnostics.
mike

[outnumbered]

Originally Posted by micken

The situation is as Mike and Dave say. I replaced an injector last year and I believe that the injectors that Volvo currently supply are all reconditioned and class 2. I got mine from Rufe and there is a surcharge so that you return the faulty injector. The injectors from Volvo come with full fittings, including a deformable clamp for torquing the injector down onto its seat. Also included is a new diesel supply pipe that runs from the common rail to the injector. The connectors on this are annealed and when torqued up they deform to the injector face and are supposed not to be reused.

The ones supplied as grade 2 equivalents are supplied on the basis that up to two of these can be used with either three grade 1 or three grade 3 injectors without having to reset the cars calibration. If you put three grade 2 injectors onto a car that was running on either grade 1, or grade 3 injectors the the car needs to be recalibrated in favour of the replacement injectors.

DICE is the hardware used to communicate with the obd2 port on the car and interface with VIDA software running on Windows XP Pro. It's what the dealers, some independent garages and some of us use.

The injectors are classed/coded on fuel supply rate.

Hope this is clear and helps.

Mick

Lol ya bet me to it i must learn to type faster.
mike

[micken]

Originally Posted by Banksy1953

Lol ya bet me to it i must learn to type faster.
mike

Well I think there's some fairly prompt and concise information been given there.

Just for the record my understanding is that there's a solenoid in these injectors that sticks and allows excessive leak off of diesel back to the tank. There is a notion in recent threads that excessive leakback could cause damage to the in tank pump due to it having to work harder. In cold weather, below 5C the common rail pump can not reach the pressure required for injection control do to excessive leak off. I used cold start last year for a few days ibn order to get my D5 started but I would not recommend this. I also replaced the glowplugs the year before but my D5 happily starts at -2C without using the glowplugs so I wouldn't be overly bothered about these.