All Things Mk5 > Mk5 General Area
OIL PRESSURE 10PSI HELP!!
pudding:
You've done the community a solid with the oil jets Ollie. I always thought the idle oil pressure is sh1t on these engines, and you found the primary cause, in older engines at least :happy2:
I don't really know why the oil flow is so poor at low revs on these engines. Historically they've always been plagued with lubrication woes, dating back to 2004/5 engines with shearing off oil pump drive sprockets (which were recalled under warranty), to seized balance shaft bearings, thru blocked pick ups and everything in between.
My old 1.8T VWs and my VR6 and my R32 gave 2 bar hot idle pressure minimum. 1 bar or less on the TFSI is just pathetic really, but hey ho, it is what it is.
OllieVRS:
--- Quote from: Pudding on June 30, 2023, 09:17:06 pm ---You've done the community a solid with the oil jets Ollie. I always thought the idle oil pressure is sh1t on these engines, and you found the primary cause, in older engines at least :happy2:
I don't really know why the oil flow is so poor at low revs on these engines. Historically they've always been plagued with lubrication woes, dating back to 2004/5 engines with shearing off oil pump drive sprockets (which were recalled under warranty), to seized balance shaft bearings, thru blocked pick ups and everything in between.
My old 1.8T VWs and my VR6 and my R32 gave 2 bar hot idle pressure minimum. 1 bar or less on the TFSI is just pathetic really, but hey ho, it is what it is.
--- End quote ---
Always happy to help, if it means I can at least save one more tfsi from the scrap yard.
I don't want to claim credit for finding the oil spray jet problem, that's largely thanks to other forums like a post on Audizine. There's a video towards the bottom of the guy showing how his oil spray jets failed, and to my knowledge this is the only video on the internet that does an in depth analysis of them (for our engine specifically).
All I've done is spent an unhealthy amount of time researching and overthinking, trawling American, Polish and even Russian VW forums, and then neatly presenting my findings here. One of my 'eureka' moments was on that Polish forum where on one post some guys were discussing the A6 and its 170hp tfsi, which shares the same spray jets, and then describing oil pressure figures that nearly identically matched mine, before they changed the spray jets and their idle pressure shot right up.. Unfortunately I can no longer find that post.
But I will admit, I do now know a thing or two about oil pressure so I'm always happy to help out if someone on the forum needs it :smiley:
pudding:
It's all good. I never would have considered the oil jets as a cause. Anything hidden in the bowels of the engine is often over looked, but it totally makes sense if the spring and ball valve inside them is knackered, then they'll bleed off pressure at idle :happy2:
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