Audi TT MK1 3.2 V6 Fuel injectors

[Tegriffic]

How difficult is it to change the fuel injectors on these cars please ? Had a misfire and replaced the coil pack but that didn't work and it's been to an independent and they think it's the injector but they're quoting a lot to sort it, telling me it's a sod of a job on these cars. Is it ?

Thanks.

[shtu]

Sounds more like they don't want the job.

What tests did they do to prove it's an injector fault and not, say, the wiring loom to the injector or coil pack?

My bet is they're guessing, and throwing parts on at your expense.

[bangerhoarder]

Plugs?

Had an S3 (not the same engine of course), classic coilpack symptoms.

It was a duff spark plug.

[Tegriffic]

Thanks. They haven't confirmed it's the injector yet and are testing the electrics today (dropped it off this morning). They mentioned it could be the injector though so I'm interested so I can decide (if it is that) whether to do it myself.

[bangerhoarder]

It sounds like removing the intake manifold is the hard part. Lots of videos online, but the labour will be wrestling with this and nothing being seized or breaking.

[Tegriffic]

Thanks. I actually got a PDF of the workshop manual now. It does look a bit of a faff must say.

[rottenegg]

It's an easy job. Less than hour. Access to the intake manifold bolts is easy apart from cylinder 2, but nothing a long ball ended 6mm allen key can't overcome.

I've never seen a V6 injector go bad but shame I've only just seen this as I threw a set of 6 out recently!

Being a MK1 V6 it's probably the BDB engine code? This was a bit of a hybrid lump mixing MK4 R32 and MK5 R32 parts, and is therefore unfortunately an unwilling customer for timing chain wear. How many miles on it?

Get the garage to check measuring blocks 208 and 209 with VAG-COM to make sure it's not timing drift causing the misfire before firing the parts cannon at it.

Did they enable misfire detection in VAG-COM to detect which cylinder is misfiring?

If not electrical or fuel delivery, a compression check/leak down test will be required to establish mechanical health unfortunately.

[zsdom]

Timing chain would be my port of call too, the tension can be checked on vagcom. If it is the chain be prepared for a big bill, its an engine out jobbie, some KY could help with the pain though