injectors fooked?

[asif]

Basically how would you know your injector or injectors are fooked?
What are the symptoms?

I assume there are a few injectors obviously 1 for each valve I presume, so if one fooks up and the rest are fine what would be the symptoms for that also?

Obviously if they are all totally knackered the car wouldn't start I presume.

Also does it always show up on Vagcom?

[Rhyso]

You have 4 injectors - one per cylinder

I presume normal signs would be mis-firing, rough running, down on power

You can log the requested quantities via VAGCOM

[asif]

Would it come up on vagcom if one or more are fooked?

[Rhyso]

Would it come up on vagcom if one or more are fooked?

Might only show it being an electrical problem but by doing live logging you should be able to view the requested values against the actual values of fuel being injected

[Agreeable Slick]

What makes you think that they are boogared anyway?

[Rhyso]

What makes you think that they are boogared anyway?

OP has had MPG issues for the past few months - struggles to get 400 miles to a tank

[Agreeable Slick]

Is there a link to this?

Don't want to start listing questions that have already been asked.

[Rhyso]

Is there a link to this?

Don't want to start listing questions that have already been asked.

There's a thread kicking around somewhere but off the top of my head he's had it checked for boost leaks (weeping slightly from the intercooler), and replaced the MAF.

Temperature sits bang on 90 so no thermostat or sensor problems (no codes in VAGCOM)

Car was remapped by Topher and he's had a look at it but everything checks out 

I had a leaky intercooler yet would easily see over 500 miles to a tank even with mostly town driving with a bit of dual carriageway thrown in.

Asif mainly does dual carriageway yet barely reaches 450 miles to a tank 

Found a thread about the red turbo pipe
http://www.golfgtiforum.co.uk/index.php?topic=152842.0

Looks like it was / has been leaking at some point

[Agreeable Slick]

Aye, just looked at tuneside visit.

To me if it's ruled out to be the intercooler, I would start looking at the fuel pump (or is yours a PD?) and it's timing plot. If it's out it will fire too much fuel in, and also at the wrong point on the engine stroke.

If it is down on power, then it would be more of a case of looking at injectors as they are unit pumps and can fail individually.

[Rhyso]

Yeah the 130's are PD engines