New second hand mk4 1.8t - unusual ignition coils

[Fatty]

Hi guys! I have recently upgraded my 2.0 to a 1.8t. very happy so far, the car is essentially stock in every way, carefully maintained by a early 30's woman who treated it with respect and ignorance. she took it to reputable mechanics without fail.

I have noticed however there are some strange ignition coils on it.


I think they are from an audi A6. I dont have a problem with that, but a friend set me up with some coils from an R8 and what are apparently "OEM adaptor plates" for the slightly longer coils.

this is where i find my problem. the coils stick out further than the adaptor plates and the adaptor plates dont fit. this makes me question what is going on here??? could someone help? in what ways is my 1.8t NON STANDARD? why did they choose to use these A6 coils instead of the R8 which is what are so popular?



Not only this, but there appears to be some oil coming up out past the spark plug. that does not seem right at all.


could you offer me some advice? whats going on?

[h100vw]

You've a lot to learn young Jedi/

Those are the std coilpacks for the mk4 GTI with AGU engine.

Please dont waste time and money converting to the R8 coilpacks, it won't make any difference to the way it runs. Even with a tune, the weak point in the ignition is the ignition control module on the airbox.

You can buy conversion looms but it's not cheap.

Gavin

Hi guys! I have recently upgraded my 2.0 to a 1.8t. very happy so far, the car is essentially stock in every way, carefully maintained by a early 30's woman who treated it with respect and ignorance. she took it to reputable mechanics without fail.

I have noticed however there are some strange ignition coils on it.


I think they are from an audi A6. I dont have a problem with that, but a friend set me up with some coils from an R8 and what are apparently "OEM adaptor plates" for the slightly longer coils.

this is where i find my problem. the coils stick out further than the adaptor plates and the adaptor plates dont fit. this makes me question what is going on here??? could someone help? in what ways is my 1.8t NON STANDARD? why did they choose to use these A6 coils instead of the R8 which is what are so popular?



Not only this, but there appears to be some oil coming up out past the spark plug. that does not seem right at all.


could you offer me some advice? whats going on?

[h100vw]

The oil in the plug hole is unlikely to be coming up. It will be the cam cover gasket leaking.

[Fatty]

Thankyou! is it unusual to find the 1.8t AGU engine in a 2003 mk4?
I guess Ill do some searching but its good to know, i feel like i'm getting somewhere.
so its a 2003 1.8t AGU engine.
with a leaky cam cover gasket.

do you think I should replace the cam cover gasket?
What can you tell me about the AGU variant compared to the other 1.8t's?

is this accurate?:
1.8 R4 20vT

110 kW (150 PS; 148 bhp) @ 5,800 rpm; 220 N·m (162 lbf·ft) @ 2,200-4,200 rpm — AEB, AGU, AJH, APH, ARX, ARZ, ATW, AUM, AVC, AWD, AWL, AWT, AWW, BJX, BKF, BKVVW Polo GTI, VW Golf Mk4 GTI, VW Bora, VW New Beetle, VW Passat B5 and VW Sagitar. Also on the Audi TT Mk1 (8N), Audi A3 (first gen.), Audi A4, Audi A6, Škoda Octavia, Škoda Superb (first gen.) and SEAT Ibiza.


EVEN THOUGH:

1.8 T	1998-2001	I4 20V	AGU/ARZ/ARX/AUM	1781 cc	110 kW (150 PS; 148 hp) @ 5500 rpm	210 N·m (150 lb·ft) @ 2200–4200 rpm
1.8 T	2001-2006	I4 20V	AUQ/AWP/AWW/AGU	1781 cc	132 kW (179 PS; 177 hp) @ 5500 rpm	235 N·m (173 lb·ft) @ 1950–4700 rpm

my car would fall under the 132kW age bracket?

[Fatty]

I just found this rather enlightening post on the issue

Must do modifications for K03/K03s AGU and AUM engines FWD cars | Audi-Sport.net

thanks, yes master, im brand new to this world.

[JustCruisn]

Thankyou! is it unusual to find the 1.8t AGU engine in a 2003 mk4?
I guess Ill do some searching but its good to know, i feel like i'm getting somewhere.
so its a 2003 1.8t AGU engine.
with a leaky cam cover gasket.

Yes that is correct

do you think I should replace the cam cover gasket?

Yes change the gasket

What can you tell me about the AGU variant compared to the other 1.8t's?

All Mk4 GTI in Australia were delivered with the Audi 20V AGU engine.

is this accurate?:
1.8 R4 20vT

110 kW (150 PS; 148 bhp) @ 5,800 rpm; 220 N·m (162 lbf·ft) @ 2,200-4,200 rpm — AEB, AGU, AJH, APH, ARX, ARZ, ATW, AUM, AVC, AWD, AWL, AWT, AWW, BJX, BKF, BKVVW Polo GTI, VW Golf Mk4 GTI, VW Bora, VW New Beetle, VW Passat B5 and VW Sagitar. Also on the Audi TT Mk1 (8N), Audi A3 (first gen.), Audi A4, Audi A6, Škoda Octavia, Škoda Superb (first gen.) and SEAT Ibiza.


EVEN THOUGH:

1.8 T	1998-2001	I4 20V	AGU/ARZ/ARX/AUM	1781 cc	110 kW (150 PS; 148 hp) @ 5500 rpm	210 N·m (150 lb·ft) @ 2200–4200 rpm
1.8 T	2001-2006	I4 20V	AUQ/AWP/AWW/AGU	1781 cc	132 kW (179 PS; 177 hp) @ 5500 rpm	235 N·m (173 lb·ft) @ 1950–4700 rpm

my car would fall under the 132kW age bracket?

In different markets different versions of engines were installed in many different models.

In Australia some engines fitted to Audi were similar, with a mix of larger turbos or multiple turbos and also variable timing.

Your engine in the 110Kw version, an ecu tune would bring it to around 150kw.

[Fatty]

I guess I'm surprised, I assumed they stopped using the AGU engines in 2001, but I guess its right there, in my 2003. thats quite disappointing but really I should have known.

[Bug_racer]

I guess I'm surprised, I assumed they stopped using the AGU engines in 2001, but I guess its right there, in my 2003. thats quite disappointing but really I should have known.

Audi stopped in 2001 , VW used the same engine and ECU up until the last batch that came from SA in 2005

[Fatty]

Audi stopped in 2001 , VW used the same engine and ECU up until the last batch that came from SA in 2005

yes, I see that now
when vw shifted to the 5th generation I remember seeing a LOT more veedubs on the road. so maybe with the success of the fifth generation vehicles, maybe they were less inclined to keep pushing the mk4's? purely speculation here, I just remember the 5th generation seemed to really hit the consumers. but I cant find any hard evidence of that.

god, its great finding out how much I don't know.

on a separate note:

I think a wheel bearing or CV joint or boot is going... and my clutch is entering into dire times,
and I think my cam cover's gasket maybe leaking slightly
I rate the clutch pretty high on my list because at this stage when i'm getting moving and i'm slipping the clutch, there seems to be a vibration as if the flywheel was warped. after 1st gear though I don't really have any issues other than slipping if i accelerate too hard.
ill be trying to track down a solid flywheel and a VR6 clutch which was recommended to me.

where do you normally find those parts?

Should I make a thread for my car specifically at this point? would that be useful?

[h100vw]

ECStuning for the clutch kit inc flywheel. Or ebay. Bug Racer may keep them too pretty sure he is an ECS reseller.

Your's is def 110kw. I haven' seen a 132kw AGU. If VW change the output the engine code changes too. BJX Polo GTI is 110kw, the Cup Edition which is the same under the bonnet except for the ECU has a different engine code. that wiki entry is wrong.