All Things Mk5 > Mk5 General Area
Clutch Stickiness ONLY after medium-hard right turns.
OllieVRS:
Narrowed down the issue to only happening after the car is thrown into a medium-hard right turn, most often noticeable after accelerating from the third exit of a roundabout or on country roads with tight right-corners.
Issue still appeared after using engine braking to decelerate rather than using the brake, so it's nothing to do with the brakes.
And it never happens on hard left turns.
Normally the pedal stick lasts for 0.3s but the car is in-gear. The longest it's ever happened for was on a track day, on an extremely hard right turn it stuck down for about 1.5s.
I'm sure @Pudding may jump to saying it's crankfloat (uh oh) but I'm really hoping to find something else. Could it be caused by something like engine mounts? Or maybe the flywheel or the clutch itself?
Also, not sure if related, but I've noticed the clutch/gearbox is noisier in reverse. Not sure if this is related or not.
pudding:
Well the gearbox mount is the weakest one, so if a lot of engine weight is transferring onto it during a hard right hander, that could be worth looking at next.
OllieVRS:
--- Quote from: Pudding on October 09, 2023, 03:29:24 pm ---Well the gearbox mount is the weakest one, so if a lot of engine weight is transferring onto it during a hard right hander, that could be worth looking at next.
--- End quote ---
Gearbox you say? I did install a shim which fixed it completely (for 1000km), so could be related to some internal travel within the gearbox?
I have two more shims, all I'd need to do would be to buy another end cap. If you have a feeling that that could solve it I'd be happy to give it a shot. Bit nervous about losing gearbox oil every time I open that end cap though :scared:
SpongeBob:
A guy on our local car forum had this issue on his and it turned out to be crankwalk. The thrust washers were destroyed. He had an uprated clutch though.
Not his thrust washers but they were somewhat like that.
It is his flywheel though you can see were it has been rubbing on the block.
OllieVRS:
--- Quote from: SpongeBob on October 10, 2023, 04:48:02 pm ---A guy on our local car forum had this issue on his and it turned out to be crankwalk. The thrust washers were destroyed. He had an uprated clutch though.
Not his thrust washers but they were somewhat like that.
It is his flywheel though you can see were it has been rubbing on the block.
--- End quote ---
Yikes that's a scary thought. I replaced the connecting rod bearings in-situ as a precaution two years ago after my oil pressure mishaps, but I remember I wasn't able to access the thrust bearings (without taking out the crankshaft, something I wasn't prepared to do). But I would have checked them if I could.
As for the flywheel, I assume that picture you sent @SpongeBob is the view with the sump taken off. Here's mine:
These pictures are from this May, or about a year after the issue first appeared. No visible scratches.
What should I check next that doesn't involve completely disassembling the engine?
Cheers :happy2:
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version