Dear Friends,
I would like you to help me find out where my oil is going! 2003 Jetta Wagon 5spd, 210k miles. Recently it went from not consuming any oil at all to something like 1qt between 500-1000 miles! The odd thing is I do not see any blue smoke, even on cold start up! The only way I can get to smell a taint of oil smoke is if I rev it shortly after a cold start (not healthy for engine). I have tried to pay attention when driving and even when pushing it hard can't seem to see smoke! Note I drive mostly city, live at altitude and with mountains, so my turbo and engine do suffer more than those of you in the great plains that can drive 1000 miles at 70mph in flat gound non stop.
I checked compressions and they were great (480-500 psi) in all four cylinders. Checked intercooler, it had oil....cleaned it and checked again two weeks later, some oil but nothing major. When checking compressions, I removed all glowplugs and only middle cylinders sprayed out oil when cranking, suggesting oil was coming from manifold given that the intake leads straight into central cylinders. I checked turbo recently and did not notice mayor shaft play. Checked the "hockey puck" and it seems to be OK, just spraying some oil mist into the intake pipe. A German mechanical engineer that worked with diesel engine design and worked for some patents for VW checked the engine with me and discarded stuck rings because of compression numbers and low blow by. Valve guides also seem unlikely. I am dumbfounded..... how can I burn that much engine oil without leaving a trail??
I have another problem that might or might not be related. I have, like many other forum members, a problem in which I have weird power loss symptoms while driving in higher gears under high boost conditions. Note it is NOT limpmode, it is simply a loss of power after a few seconds under high boost conditions at higher gears which returns if I release the accelerator for a few seconds. However, none of the forum discussions have conclusive resolutions of the problem. As of now, I am waiting for a new MAF sensor to try to rule out. Checked vacuum system and everything is holding vacuum OK. I mention this not to deviate from my initial concern but rather to evaluate if they are somehow related.
I understand that this problem pretty much narrows down to four possible problems.
1. Stuck oil ring(s).
2. Leaking valve guide seals.
3. Bad turbo
4. "Hockey puck" problem.
However, except for the hockey puck, diagnosing any of the other possibilites is not a cheap endeavor and would rather consult the forum before taking the next step.
Big thanks!
I would like you to help me find out where my oil is going! 2003 Jetta Wagon 5spd, 210k miles. Recently it went from not consuming any oil at all to something like 1qt between 500-1000 miles! The odd thing is I do not see any blue smoke, even on cold start up! The only way I can get to smell a taint of oil smoke is if I rev it shortly after a cold start (not healthy for engine). I have tried to pay attention when driving and even when pushing it hard can't seem to see smoke! Note I drive mostly city, live at altitude and with mountains, so my turbo and engine do suffer more than those of you in the great plains that can drive 1000 miles at 70mph in flat gound non stop.
I checked compressions and they were great (480-500 psi) in all four cylinders. Checked intercooler, it had oil....cleaned it and checked again two weeks later, some oil but nothing major. When checking compressions, I removed all glowplugs and only middle cylinders sprayed out oil when cranking, suggesting oil was coming from manifold given that the intake leads straight into central cylinders. I checked turbo recently and did not notice mayor shaft play. Checked the "hockey puck" and it seems to be OK, just spraying some oil mist into the intake pipe. A German mechanical engineer that worked with diesel engine design and worked for some patents for VW checked the engine with me and discarded stuck rings because of compression numbers and low blow by. Valve guides also seem unlikely. I am dumbfounded..... how can I burn that much engine oil without leaving a trail??
I have another problem that might or might not be related. I have, like many other forum members, a problem in which I have weird power loss symptoms while driving in higher gears under high boost conditions. Note it is NOT limpmode, it is simply a loss of power after a few seconds under high boost conditions at higher gears which returns if I release the accelerator for a few seconds. However, none of the forum discussions have conclusive resolutions of the problem. As of now, I am waiting for a new MAF sensor to try to rule out. Checked vacuum system and everything is holding vacuum OK. I mention this not to deviate from my initial concern but rather to evaluate if they are somehow related.
I understand that this problem pretty much narrows down to four possible problems.
1. Stuck oil ring(s).
2. Leaking valve guide seals.
3. Bad turbo
4. "Hockey puck" problem.
However, except for the hockey puck, diagnosing any of the other possibilites is not a cheap endeavor and would rather consult the forum before taking the next step.
Big thanks!