VW Vortex - Volkswagen Forum banner
1 - 12 of 12 Posts

·
Registered
Joined
·
2,510 Posts
Discussion Starter · #1 ·
I've heard it's best to buy a new one but that gets a little expensive. Do you guys recommend replacement or rebuild or possibly a used turbo. Mine is leaking oil out of the seals, not too bad but about a QT every 3-4k.
http://****************.com/smile/emthup.gif
 

·
Registered
Joined
·
2,510 Posts
Discussion Starter · #5 ·
Re: (vw tdi guy)

some guy told me today that a leaking turbo can damage the engine if the motor sucks up the oil or some weird $hit, I dont know what he was talking about he couldn't explain himself. Has anyone had a leaking turbo that has caused further damage to the engine, as long as I keep checking the oil every 500 miles I should be ok for awhile. It seems to be leaking a qt every 3k. nothing major. http://****************.com/smile/emthup.gif
 

·
Registered
Joined
·
2,824 Posts
He was probably referring to a run-away engine condition, when the engine starts running on something other than Diesel supplied by the injection system, usually its own oil. It happens, but I don't know if I'd say it's common.
The guy's theory is probably that if the turbo seals are leaking externally, then they may be leaking internally, or soon may be. If so, the oil leaking internally can get fed by the turbo into the enigne, given it lots of fuel to burn, which will make it rev out of control.
There are two ways to stop a runaway engine: if you have a 5spd, put it in 5th gear and use both feet on the brake and yank up the E-brake. Hopefully your clutch is strong enough to not slip.
The other method is to pull over ASAP, pop the hood open, and operate the Anti-shudder valve by hand and hopefully starve the engine of air long enough to stop it from running. But, this only works if you haven't removed the EGR valve.
 

·
Registered
Joined
·
1,828 Posts
Re: (quickautotech)

Quote, originally posted by quickautotech »
It seems to be leaking a qt every 3k. nothing major. http://****************.com/smile/emthup.gif

That IS major if the turbo is passing the oil into the intake or exhaust. I have seen engines that have run away due to turbo failure as I'm sure others here have, and it ain't pretty. If the turbo is leaking oil past the shaft seals chances are the bearings are in poor shape. It can only get worse. Get someone who knows what they're doing to check your turbo soon...that is unless you want to drill a hole in your aftercooler for a drain
Also note that turbo shaft seals can pass oil even if there's nothing wrong with the turbo itself...conditions which can cause this include a restricted intake, excessive crankcase pressure, or oil contaminated with fuel (the latter possibility won't apply to this engine though).


Modified by Ian'89Fox at 11:29 PM 9-18-2008
 

·
Registered
Joined
·
2,510 Posts
Discussion Starter · #8 ·
Re: (Ian'89Fox)

Which bearings are you refering too? If the engine runs away I can put it in nuetral and pull over right, car only has 115k on it. I had it checked out and one guy told me I needed a new turbo due to seal that are leaking, also have heard that the egr valve can leak. I just need to get someone who know what there doing to take a look at it. Anyone in LA or San Fran who could give a hand in the next week. Headed to LA on monday.
 

·
Registered
Joined
·
1,828 Posts
Re: (quickautotech)

Quote, originally posted by quickautotech »
Which bearings are you refering too? If the engine runs away I can put it in nuetral and pull over right, car only has 115k on it.

I'm talking about the turbo shaft bearings...when they get excessively sloppy often oil will leak past the seals.
Sure you can put it in neutral and pull over if the engine runs away. You might as well walk away too, because you'll need to replace the engine. A runaway is detrimental for two reasons. When a diesel engine starts running on its own oil, engine speed cannot be controlled since fuelling cannot be controled. The engine will over-rev far past what it was designed for. In addition, because the engine is burning its own oil, there is less and less oil in the pan for lubrication as time goes on. Eventually the crankshaft bearings will spin in their bores and the whole bottom end will seize up.
Just giving you a heads up...definitely have this looked at.
 

·
Registered
Joined
·
2,510 Posts
Discussion Starter · #11 ·
Re: (Ian'89Fox)

Thanks for the tip, so it sounds like I'm gonna need a turbo sooner than later if the bearings are shot. Is there anything else it could be. It sounds normal still, its not loud. I'm gonna fix it when I get to la next weekend. I need to look for a used turbo, if anyone has a good one please let me know. http://****************.com/smile/emthup.gif

Also another question, how could the engine run off of its own oil when the oil is leaking out at the lower intercooler pipe? http://****************.com/smile/emthup.gif


Modified by quickautotech at 11:43 PM 9-21-2008
 

·
Registered
Joined
·
2,510 Posts
Discussion Starter · #12 ·
Re: (quickautotech)

Hey will the vw tdi ASV 110hp engine code have a vnt 17 turbo? or was it only the 150 HP models that had the vnt 17? Also wondering if the asv 110hp turbo would require the pd100 lower intercooler pipe/hose? http://****************.com/smile/emthup.gif
 
1 - 12 of 12 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top