NEED your experience/advice mk4gti1.8t

[witchcraftz]

Re: NEED your experience/advice mk4gti1.8t

Looks like you've got this sorted out.

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

So i guess that valve came in handy then eh bud!

totally !

[Thor]

Re: NEED your experience/advice mk4gti1.8t

So i guess that valve came in handy then eh bud!

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

k solid.

[BaggedGLI]

Re: NEED your experience/advice mk4gti1.8t

You'll lose some oil, but need to top it up after, wont be a full change.

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

Oil not getting to the turbo and causing them to blow? Read about an oil filter that came apart and gunked up the interior of the oil feed lines.

hmm. can a filter be switched without draining the sump? i have a fram in there now, but want to put a mann back in.

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

In my opinion a blocked PCV system will not really result in a blown turbo in such a short period of time. You will start experiencing a tons of blow by and smoke out the exhaust before you will completely blow a turbo seal.

you were right. i drove the car today after clearing a blocked pcv and lost no oil, saw no smoke.

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

If your oil pressure light comes on, maybe start by checking your oil pressure?

I feel you. this is going to sound silly, but how does one check oil pressure? aside from watching the level on the dipstick change, or witnessing a puddle form under a running car?

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

What oil have you been using? And fuel? Or guess more so what did the PO use (just saw you said you use synthetic)

I know people who have blown stock turbos at less than 100k km because of conventional oil and regular fuel.

Also what are you driving like? Are you allowing time for the turbo to cool before shutting the car off? What about start up? Allowing it to warm up properly befoe going into boost?

I found the problem. It was a clogged pcv valve. I run 91 octane, and while i don't know exactly what the previous owner ran, he was the one who cautioned me to only use synthetic. When i took the valve cover off to replace the gasket there were only trace amounts of sludge. certainly nothing to indicate conventional ( as far as i know). As far as my driving habits go, it's been hit and miss since July. I'm not a spirited driver at all really, and after the first turbo "blew" my forum browsing lead me to start warming up and cooling down the car. I also looked into a turbo timer, but did not in the end decide to go with it. Someone told me that because the turbo is relatively small, and water cooled, the temp is theoretically limited to the coolant, and it was an unnecessary mod. The flash point of my oil is 236c/456f, well above the 190 shown on the dail in dash. how hot does a turbo get?

[nowjustonly]

Re: NEED your experience/advice mk4gti1.8t

When you say blown turbo is the turbo shaft broken? Is the turbo siezed? Or is it pushing way to much oil through the seals?

When i hear blown i think broken turbo shaft and some carnage.

I found my problem. it was a clogged pcv valve. thanks for asking that question. i may be using language that isn't specific enough because i just don't know enough. when i say blown turbo what i mean is, oil is leaking past the seals into the exhaust as evidenced by thick white exhaust smoke (among other things) with a distinctive odor. When the first turbo "blew" i didn't even bother to check shaft play because a rebuild was too daunting. I just looked for a replacement ko3, and found one. when i experienced the same symptoms again i decided not to chance it and bought the rebuild kit. Oddly, the old bearing, washers, seals, clips and other parts looked great, with the exception of some mild discoloration. and light coking. Now that i know what the problem was, this makes sense. oil can get past the exhaust if there is enough pressure, without the seals or oil deflector suffering mechanical failure. my turbos didn't fail completely.

[witchcraftz]

Re: NEED your experience/advice mk4gti1.8t

Oil not getting to the turbo and causing them to blow? Read about an oil filter that came apart and gunked up the interior of the oil feed lines.

[MechEngg]

Re: NEED your experience/advice mk4gti1.8t

In my opinion a blocked PCV system will not really result in a blown turbo in such a short period of time. You will start experiencing a tons of blow by and smoke out the exhaust before you will completely blow a turbo seal.

[Ponto]

Re: NEED your experience/advice mk4gti1.8t

If your oil pressure light comes on, maybe start by checking your oil pressure?

Actually ya duh. I am retarded.

My buddy was having oil pressure issues. His oil pick up line was plugged by a oil bottle seal.

[BaggedGLI]

Re: NEED your experience/advice mk4gti1.8t

If your oil pressure light comes on, maybe start by checking your oil pressure?

[Ponto]

Re: NEED your experience/advice mk4gti1.8t

What oil have you been using? And fuel? Or guess more so what did the PO use (just saw you said you use synthetic)

I know people who have blown stock turbos at less than 100k km because of conventional oil and regular fuel.

Also what are you driving like? Are you allowing time for the turbo to cool before shutting the car off? What about start up? Allowing it to warm up properly befoe going into boost?