Hey guys/ gals.
So I have a interesting stall/ no run problem with my 2002 Jetta TDI Automatic trans (1.9 ALH).
Specs on the engine (recent complete rebuild, about 8,000 miles ago)
-stock engine management.
-Stock injection pump (11mm auto pump) with larger nozzles.
-Borg werner S7 turbo (similar to a VNT-17)
...everything else is stock.
Here's the story,
I was driving along on the hwy at 75 mph for a duration of about 45 minutes from cold start. So the car was up to temp and humming along like normal... then all of a sudden, I lost engine power. There was no major noises, NO check engine light, and no obvious mechanical damage, also no loss of power to engine management.
I had the car towed back home... further investigation begins...
Items that I have check and confirmed to be in/look to be in good order:
-Engine oil level ( at lower line, so it had consumed a bit).
-Turbo shaft looks/feels like it did new, no seen damage.
-Engine timing (crankshaft, camshaft, and injection pump all line up at TDC-1 like it was when i built the motor, so no belt skips...ect).
-Camshaft/ lifters look great (remember recent rebuilt)
-Compression on all cyl are at 395psi across the board. (at an elevation of 3200 feet above sea level).
-Fuel supply, (filter flow fuel, injectors are bleed out).
-Engine management power, all good.
-Fuel supply cut out solenoid works like a champ.
So, things that are NOT looking correct/ not in order and weird:
-Intercooler full of oil (some what normal, but this is alot!)
- oil blowback on MAF
-Oil soaked intake tube (fron MAF to turbo air inlet)
-Oil soaked turbo intake hose from turbo to intercooler.
-Turbo compressor side/snail full of oil.
THE ENGINE WILL RUN AT IDLE ONLY WHEN:
-Disconnect the intake/intercooler hose from intake manifold/egr inlet.
Other items noted when the engine is running at idle include:
- Large amounts of crankcase air pressure coming from the PCV valve on top of the valve cover (mixed with lots of oil vapor, that is very dense, causing pooling and condensing of oil).
If you disconnect it, it will purge alot of air/oil...even after cleaning it out.
So... I think this is why it died, the oil is pooling in the intake causing an air blockage and no run scenario.... Why/How?
Could there be mechanical damage or internal issues making this happen?
Just need some more brains on this question.
What is normal amounts of Crank case pressure/ air flow?
Thanks for any insight!
Jonathan Rall
So I have a interesting stall/ no run problem with my 2002 Jetta TDI Automatic trans (1.9 ALH).
Specs on the engine (recent complete rebuild, about 8,000 miles ago)
-stock engine management.
-Stock injection pump (11mm auto pump) with larger nozzles.
-Borg werner S7 turbo (similar to a VNT-17)
...everything else is stock.
Here's the story,
I was driving along on the hwy at 75 mph for a duration of about 45 minutes from cold start. So the car was up to temp and humming along like normal... then all of a sudden, I lost engine power. There was no major noises, NO check engine light, and no obvious mechanical damage, also no loss of power to engine management.
I had the car towed back home... further investigation begins...
Items that I have check and confirmed to be in/look to be in good order:
-Engine oil level ( at lower line, so it had consumed a bit).
-Turbo shaft looks/feels like it did new, no seen damage.
-Engine timing (crankshaft, camshaft, and injection pump all line up at TDC-1 like it was when i built the motor, so no belt skips...ect).
-Camshaft/ lifters look great (remember recent rebuilt)
-Compression on all cyl are at 395psi across the board. (at an elevation of 3200 feet above sea level).
-Fuel supply, (filter flow fuel, injectors are bleed out).
-Engine management power, all good.
-Fuel supply cut out solenoid works like a champ.
So, things that are NOT looking correct/ not in order and weird:
-Intercooler full of oil (some what normal, but this is alot!)
- oil blowback on MAF
-Oil soaked intake tube (fron MAF to turbo air inlet)
-Oil soaked turbo intake hose from turbo to intercooler.
-Turbo compressor side/snail full of oil.
THE ENGINE WILL RUN AT IDLE ONLY WHEN:
-Disconnect the intake/intercooler hose from intake manifold/egr inlet.
Other items noted when the engine is running at idle include:
- Large amounts of crankcase air pressure coming from the PCV valve on top of the valve cover (mixed with lots of oil vapor, that is very dense, causing pooling and condensing of oil).
If you disconnect it, it will purge alot of air/oil...even after cleaning it out.
So... I think this is why it died, the oil is pooling in the intake causing an air blockage and no run scenario.... Why/How?
Could there be mechanical damage or internal issues making this happen?
Just need some more brains on this question.
What is normal amounts of Crank case pressure/ air flow?
Thanks for any insight!
Jonathan Rall
