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Clutch losing pressure when turning

2.2K views 5 replies 4 participants last post by  Richors  
#1 ·
Hi everyone.

I have recently noticed that even after changing the master cylinder, dmf and clutch kit with csc my clutch pedal would lose pressure in roundabouts, especially when making more "aggressive" turns from time to time.

I've read something about the crankshaft having too much endplay but I am no car expert so an explanation for that would be quite nice.

Image


The above picture is from this YT video:

It shows the end of the camshaft and how damaged it is. I took the camshaft sensor off my car to take a look and mine looks nothing like that.

Do note that my astra has 304.500 km.
The engine is B14XFT 150PS.

I am about to also change the clutch actuator elbow with the newer model and drain the clutch brake fluid but I doubt that will change the problem that occurs only in sharp turns.

Any help would be appreciated, thank you!
 
#2 ·

The crankshaft moving presumably causes the flywheel to come further away from, or closer to the clutch plate on right turns and causes the pedal to drop


The p0014 video you posted is for a fault where the fragments of the vacuum pump breaking up, causes the exhaust camshaft position sensor reluctor ring to shift and cause a timing correlation issue.

If you have crankshaft endfloat and are getting p0014 code it could be due to the crankshaft position sensor toothed ring moving away from the sensor.

That mileage is impressIve I must add.
 
#3 ·
Thank you for the explanation, Redman. I will check the play when I get the chance just like in the video you just posted. For now there are no errors thrown regarding the crankshaft sensors.

In case there's a lot of play, the only way to fix this I guess will be to take the engine cover off and see what damage that has done to the engine, hoping only the crankshaft needs changing.
 
#4 ·
Vauxhall/opel would condemn the engine if excessive crankshaft endfloat is present. The crankshaft thrust bearing wears away and the crankshaft cuts into the engine block. The pistons presumably run out of true within the bores and can cause uneven wear. The crankshaft is also knackered.