Hi all,
Got a 996 C2 replaced clutch slave and clutch master cylinder, and bled clutch with Motive power bleeder, worked fine for a few weeks, but now during hard accel on freeway, go through 1-4 fine but 5-6 are hard to shift to. Then after freeway driving at high speed back to stop and go traffic. Clutch has air and difficult to go shift 1-6. As a note I have bled the system 4 times already using the same procedure using Motive power bleeder.
No leaks that can be seen on floor and no decrease volume of DOT4.
Here is my theory, it has been observed that long drives 100-120 miles WITHOUT to much clutch usage (freeway driving) the clutch goes soft and has the symptoms of air in line, and a clutch bleed is necessary to get it back to normal clutch pressure.
I pulled the schematic of the clutch hydraulic system, and I see one point of concern It also coincides to my theory, that heat or long drives can induce the air/gas in the clutch line. The component in question is 14, hose with rubber that connects to slave. This hose line could be degraded and softens and swells. As a note, this hose also is nearly in contact with the coolant return pipe to the radiator.
Could this be the culprit?
Any feedback is appreciated.
