SUPERB II 1.6TDI Greenline Injector Fault

[Hughesy46]

Hi, after 6 months of trouble free motoring  with my Superb Estate 1.6 TDI Greenline, on Saturday it started losing power and stuttering and went in to limp mode with a Start/Stop error, coil light flashing on dash. We managed to limp to a safe location with an escort and we left the car for 30 minutes. When restarted the car ran fine so we took it for a test drive, for 4 miles or more it was fine but on the way back it started losing power again and went back in to limp mode.

So we called Breakdown recovery who plugged in to a diagnostc tool and diagnosed Injector No 4 was faulty, the car was then recovered home the following day.

I'm aware that injectors require coding but my questions are this:

As it appeared to be intermittent can I assume that it is the electrical part of the injector?

Is this part available separately?

If I changed the injector myself, would the car run without coding the injector so I could drive the car in to a dealer for coding?

 

Appreciate any help in advance.

 

Steve

 

 

[TLV]

Firstly, I'll mention that it's unlikely anyone besides me will comment on this subject. I've asked before.

Now, on with the business. Read this: http://caddy2k.com/forum/viewtopic.php?t=29215

 

So best case scenario you're looking at one new or refurbished injector. I had to have all four replaced to get the car sorted when this happened to me. The new and old injectors didn't seem to work well because their injection corrections were way too different. First I had one replaced, then the second and then the last two injectors. The wallet got a good kick in the nuts from said experience.

 

As far as I know, you need a whole replacement injector, no getting around that. If it indeed is a fault with the electrical part.

A guide about injector programming: http://wiki.ross-tech.com/wiki/index.php/2.0L_CR_TDI#Injector_Quantity_Adjustment_.28IMA.29_and_Injector_Voltage_Adjustment_.28ISA.29

Another thing to consider is that you'd need diagnostics equipment to prime the electric fuel pump after working on the fuel delivery. There are ways around that, though.

 

A person in this thread claims that yes, the car will run without injector programming: https://caddy2k.com/forum/viewtopic.php?t=30805

 

If you do decide to replace the injector yourself, make sure to get the proper seals and injector bolts as well. Depending on your mileage, just one injector might not suffice. New ones are pricey, but you might find refurbished ones for 100 pounds each plus vat. Take a look here: http://www.commonraildiesels.com/product_info.php/volkswagen-golf-tdi-reconditioned-siemens-diesel-injector-03l130277b-p-2810

Seems to be a rather decent price. In fact, a lot cheaper than elsewhere. Wonder why.

Edited 31 May, 2018 by TLV

[langers2k]

Has your car had the emissions fix?

 

If so, it might be eligible for repair under the Skoda trust building measure: http://www.skoda.co.uk/owners/dieselinfo/trust-building-measure

[Hughesy46]

Hi many thanks for the replies, a lot of good info cheers.

On checking it appears it hasn't had the emissions update which rules out a warranty claim.

Managed to get a price from Skoda dealer to carry out coding and Skoda will charge £54 +VAT .

Skoda want £417.09 +VAT for an injector however supplied me the part no and a quick search found that PFJones will supply a new Siemens Item for £215 including VAT. So that appears to be the best route.

Just need to source bolt and washer and suss out the repriming of the fuel system.

[hwr1983]

13 minutes ago, Hughesy46 said:

Hi many thanks for the replies, a lot of good info cheers.

On checking it appears it hasn't had the emissions update which rules out a warranty claim.

Managed to get a price from Skoda dealer to carry out coding and Skoda will charge £54 +VAT .

Skoda want £417.09 +VAT for an injector however supplied me the part no and a quick search found that PFJones will supply a new Siemens Item for £215 including VAT. So that appears to be the best route.

Just need to source bolt and washer and suss out the repriming of the fuel system.

 

If I were you I'd budget for a new set of 4 Injectors (just in case your engine doesn't like the difference between old and new ones) (258 x 4 = 1032 = ouch! thats inc VAT though).  If you budget for it but don't need to spend it then its a bonus  

[TLV]

After having the first and second injector replaced, I checked the injection quantity deviation with VCDS. Indicates how the new and old injectors are getting along. It was obvious all four needed to be replaced. The electrical parts hadn't failed on those functioning but old injectors, the mechanical parts had worn too much out of spec compared to the new ones from mileage. Usually getting used injectors with similar mileage would be an option (though not a recommended one), but they're time bombs from the factory. The car ran with mixed injectors but definitely not right. Down on power, more vibrations at all rpm's, horrendous vibrations are idle.

 

Unless your car has very low mileage, you should definitely consider budgeting for four injectors. Even if you do get away with less than four, the car will not run as good as it did before.

 

You can prime the electric fuel pump by either hooking up 12v straight to the pump or where ever it has been wired to. If I'm not mistaken, someone on the forum dismantled their way to the fuel pump and afterwards either figured out or was suggested a more convenient way by hooking up power to an easily accessible place the fuel pump is wired to.

Edited 31 May, 2018 by TLV

[FlyingSpanner]

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Edited 9 January, 2019 by FlyingSpanner