All Things Mk5 > Mk5 General Area
URGENT oil pressure stop engine
ady-gti:
Yes the upper part is hydraulic afaik, you can take a look here: http://www.mk5golfgti.co.uk/forum/index.php?topic=93695.0
Pesky jones:
--- Quote from: Pudding on March 04, 2016, 02:05:19 pm ---It's hydraulic mate. It probably has a pre-load spring in it as well to help keep things taught during assembly, so the chain is unlikely to be loose and sloppy as you're expecting.
Two things usually happen with hydraulic tensioners, 1 - they run out of travel because the chain is worn out or 2 - they leak internally, which causes a pressure drop.
Tensioners with plastic pads can also wear down (the plastic bit) which also reduces it's tensioning travel.
--- End quote ---
Oh, so me hoping to see tensioner failed will not tell me that the oil pump hasn't failed isn't going to happen? It could still be the oil pump.
I'll go ahead anyway and see what I find with the timing.
pudding:
I can't see how the pump would fail completely unless it's drive chain snapped tbh. A bit of crap blocking the pick-up wouldn't stop it working, it would just restrict it. Clear the restriction and it's golden again.
The tensioner / chain wear is a common issue on this engine so it's more than likely that mate.
Pesky jones:
Yeah I intend to check the chain and sprocket of the oil pump (you don't have to remove the pump to do this).
If the pick up pipe wouldn't stop the engine, then I still have the question what caused it to cut out, and why isn't it starting now. If them tensioner has failed, then this might cause the engine to stop and not start again, correct? I however don't want to replace the chain tensioner etc without knowing for sure... its difficult.
pudding:
I know on the TSI engine if the chain wears out to a certain point, the engine won't start at all. Probably because the ECU can't figure out where the cam is in relation to the crank anymore. I wonder if that's true of the TFSI?
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