Clutch not engaging hydrolic fuel levels are fine but clutch doesn't

Tallat Mahmud , There may be a leak in the hydraulic clutch line, look under the hood and under the car to see if fluid leak evident and look at the lines and connections for leaks, if no leak observed probably a faulty/bad clutch master cylinder or slave cylinder(seals leaking internally) and has let air into the system. Below are links that will show or tell how to replace master and slave cylinder. Note the picture is of the slave cylinder, I have seen a few of these break at the bolt flange and then they swivel/turn and then the pin will no longer contact the fork, in this case the cylinder will have to be replaced also. Good luck.

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https://www.youtube.com/watch?v=vOiHgP33...

http://honda-tech.com/forums/acura-integ...