1.8t Oil burning continued, auq 180 engine wanted

[Chris#101]

Right so the story continues...

2003 vw golf gti
1.8t
AUQ 180
97,000 miles

*On first cold start up in the morning the car puffs out a cloud of blue smoke then clears.

*When the car gets upto temperature (90*) and you either get stuck in traffic or let the car idle for say 5 minutes. when you go to rev the car or pull away a cloud of blue smoke poors out. almost like what ever smoke has built in the exhaust system gets pushed through with new gas to then clear the system. then its clear again untill you let it idle.

Ive just borrowed a friends compression tester, whether I did the compression test right or not I dont know but the results were roughly. the car was upto temperature when carried out 90*.

cylinder 1 130psi
cylinder 2 130psi
cylinder 3 105psi
cylinder 4 130psi

How ever thess picture may be of interest  exhaust port number 4 which has a oily tar build up and all the rest (including cylinder number 3 with a lower compression result)  have a dry carbon/soot build up.

Exhaust port number 4 oily/tar/wet





exhaust port numbers 1 , 2 & 3 are all dry/carbon/soot



* I have replaced the turbo with a recon unit so can completely rule that option out.

What are peoples thoughts, STEM SEALS? PISTON OIL RINGS? PISTON COMPRESSION RINGS?

with the symptoms ive got and a bit of googling the majority of answer makes me believe stem seals!?

My friend and I are fairly handy with the tools so my questions are

*What is the bare minimum you have to take off to gain access to the valves?

Ideally I want to leave the head on and do the valves in situ with piston at TDC,
*has anyone got a link to a valve spring compressor that will work on the 1.8t 20v with the head in situ?

 All thoughts and advice welcome as I really want to get this resolved 

thanks 

[Wayne]

I would say stem seals, they are letting a little bit dribble down which is then being burnt away quickly, you can do them with the head in place using compressed air.

[beppe2672]

Do a wet compression test, same as what you did before, but put a few drops of oil in the cylinder before doing the compression test. If you get a higher pressure than you did before with the oil it'll be your piston rings, if it doesn't change look at your stem seals.

[Chris#101]

Cheers for the responses the more and more I look into it stem seals on.the.1.8t are popping up more and more. I won't have chance to do the compression  test again till the weekend . Does anyone know the tolerance specs on compression for the 1.8t?

can anyone recommend a spring compressor that fits the 1.8t head with it still on in situ?

Thanks

[Chris#101]

Cheers for the responses the more and more I look into it stem seals on.the.1.8t are popping up more and more. I won't have chance to do the compression  test again till the weekend . Does anyone know the tolerance specs on compression for the 1.8t?

can anyone recommend a spring compressor that fits the 1.8t head with it still on in situ?

Thanks

Anyone 

[benny.banks]

1 min i will look in the bentley manual.

[benny.banks]

Normal Pressure Range: 130.5psi - 203psi

[benny.banks]

http://www.ebay.co.uk/itm/VS160-SEALEY-VALVE-SPRING-COMPRESSOR-OHV-BRAND-NEW-SEALEY-TOOL-/221124176849

if your using the above you also need

http://www.ebay.co.uk/itm/Sealey-VS1601-Compressed-Air-Adaptor-Use-VS160-Valve-Spring-Compressors-C-/310435468027?pt=UK_Hand_Tools_Equipment&hash=item48476552fb

[Chris#101]

Thanks for all the replies 

I'm now looking for a auq180 engine for sale ?