Idle Clatter - 2015 6c polo 1.4 tdi w/30k Problem or Feature??
Posted: Sun May 26, 2019 2:00 pm
Hi,
I'm just wondering if these are common for being weak? I can't see a lot about the 1.4 tdi anywhere, and nothing about the clutches, just lots about the 1.9 tdi, which AFAIK this is a 3 cylinder version of.
I'm also wondering if any solid flywheel conversions for the 1.9 fit the 1.4 as they seem to be around the same size (230mm)?
TL:DR
I have a 2015 Polo 1.4 tdi with a 5 speed CUSA box and when running it has a random and very loud clatter on idle coming from the middle of the engine bay that goes away when the clutch is pressed or quietens down a bit when the engine is held down. The car only has about 25k miles but it was front-end crashed and repaired around 10k. When I first saw it at 15k miles and there was a low-pitched, slightly tappy, quiet noise when the clutch was disengaged, which to me sounded a bit off but as it was needed ASAP I left it alone and forgot about it. Roll on 10k later and having replaced a very clattery drop-link, the quieter noise is still there but there's also now the very loud clatter on tickover and it happens both when the car is cold and a bit warm. I'll upload a video of the noise later.
I'm a mechanic, but haven't worked as a job for over a decade and don't know much about DMF's apart from they're a PITA and are typically more fragile than solid mass. I also think that someone learning to drive in the car may have triggered this fault which is left over from the crash it had, which cracked a chunk of alloy from the front (pulley side) engine mount and triggered at least one airbag so must've been sudden and I think may have reduced the lifespan dramatically as 30k is far too early for an average car clutch and the symptoms all point to me to be a DMF issue, IMO. The clutch pedal is nice and progressive too...
I'm just wondering if these are common for being weak? I can't see a lot about the 1.4 tdi anywhere, and nothing about the clutches, just lots about the 1.9 tdi, which AFAIK this is a 3 cylinder version of.
I'm also wondering if any solid flywheel conversions for the 1.9 fit the 1.4 as they seem to be around the same size (230mm)?
TL:DR
I have a 2015 Polo 1.4 tdi with a 5 speed CUSA box and when running it has a random and very loud clatter on idle coming from the middle of the engine bay that goes away when the clutch is pressed or quietens down a bit when the engine is held down. The car only has about 25k miles but it was front-end crashed and repaired around 10k. When I first saw it at 15k miles and there was a low-pitched, slightly tappy, quiet noise when the clutch was disengaged, which to me sounded a bit off but as it was needed ASAP I left it alone and forgot about it. Roll on 10k later and having replaced a very clattery drop-link, the quieter noise is still there but there's also now the very loud clatter on tickover and it happens both when the car is cold and a bit warm. I'll upload a video of the noise later.
I'm a mechanic, but haven't worked as a job for over a decade and don't know much about DMF's apart from they're a PITA and are typically more fragile than solid mass. I also think that someone learning to drive in the car may have triggered this fault which is left over from the crash it had, which cracked a chunk of alloy from the front (pulley side) engine mount and triggered at least one airbag so must've been sudden and I think may have reduced the lifespan dramatically as 30k is far too early for an average car clutch and the symptoms all point to me to be a DMF issue, IMO. The clutch pedal is nice and progressive too...
) Is the random clacking sound normal?! There's a bit of a leak in the NS drive-shaft oil seal and as the noise goes away with the clutch down I wonder if the level is a bit low and needs sloshing around a bit first or IDK? After I restarted the engine a minute later the noise had gone...