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The clutch system is hyrdrolic all oil NO AIR.
Oil will not compress air dose so if you have air in the oil clutch system you have no clutch or height grab issues or gear engagement problems mostly rev, and 1st gear .
However it could also be a shattered clutch disk that you would have to remove transmission bell housing ect, to check.
I would start with the clutch lines and cylinders .Their is a master cylinder a slave cylinder and a reservoir .Check the RES. is it empty do you see fluid on the bottom line any oil wipe it off push the pedal check line again no fluid leak is good. Now look at the master cylinder it connects to the pedal on one side and comes through the fire under the vacuum booster control follow the line from the reservoir it connects to it .Look for fluid leaking down on the clutch pedal and ware to bushings this is the biggest ware part . If you see fluid its leaking and if fluid gets out air is getting in and over time will reach a point ware the air wins and can't put enough force on the fluid to disengage the springs on the pressure plate that want to put the force\of the engine on that plate and disk and flywheel.This what the slave cylinder dose.Think of it like a light switch its on or off pedal out on pedal in power off.
This requires a total rebuild of all clutch parts at least the slave cylinder and turning the flywheel so its a smooth surface if you skip the turning the clutch will fail in 20000 miles you might getaway with the master cylinder depending on the condition and the res as long as it dosn;t leak and is clean
clutch pedals are suposed to go all the way to the floor , you sure you dont mean brake pedal (cus thats bad ! ) clutches should travel all the way to floor and release the "grab" of the engine about 2/3 down , this way they are more smoothly allowing shifting thru the gears and not jerking as you shift thru the gears , if clutch pedal does not start to "grab" the engines power by 2/3 off the floor and fully "grab"its power all the way up(slipping) ,and you have a hydraulic clutch (96's do) then the clutch disk may require replacement or there is a oil leak in the clutch/master/slave cylinder , look for small oil leaks from under car in area of foot pedals
clutches should be replaced as an assembly that includes , disk ,pressure plate, throwout bearing , with engine side clutch plate magnafluxed for heat cracks and any hydraulic oil leaks replaced or repaired
The clutch hydraulic system has a problem-either the clutch master cylinder or the slave cylinder on the bell housing may be at fault.
If the brake fluid is low in the clutch master cylinder reservoir, there may be a leak to the outside. Refill and check for leaks while someone pumps the clutch pedal. Check around the clutch master cylinder (also under the dash- if wet there around the top of the clutch pedal or if wet on the carpet below the pedal, the master cylinder is leaking.) Check the single line from the clutch master to the bell housing where the slave cylinder is. If no leaks found, likely the clutch master cylinder or the slave cylinder has failed internally.
Is it safe: there won't be any further damage caused by running it, but if shifting gets harder and harder to do, that may cause a driveability problem.
It can only be coming from the clutch master cylinder, the end that is bolted to the firewall, and that the push rod from your clutch pedal enters into. You will have to take it off for repair or replacement.
may have a large leak in the slave cylinder. do you see fluid dripping underneath te transmission housing? it could have an internal leak but not as common. check the fluid level in the little reservour on the firewall.
hi it seems that you have right and the problem is the clutch master cylinder that is faulty if the leaking cylinder is located under the dash. the slave cylinder is at the gear box. replace the master cylinder and blead the system and you be alright. Hans
The problem could come from the clutch master cylinder or the slave cylinder. The cause could be external or internal.
First check the fluid level in the reservoir. The reservoir could be independent of the brake system or using the same.
If the level is too low, air may have entered in the line and the hydraulic compression is affected. So first, adjust the level in the reservoir using recommended oil. (normally brake oil is ok).
Check for any oil leak starting from the clutch pedal following hydraulic circuit up to the transmission.
Your vehicule should have two clutch cylinders: the master and the slave.
The master cylinder is operated by your clutch pedal, it's located under the dash, fixed to the firewall and connected to the hydraulic line on the other side of the firewall. Check for any leak on the carpet, under the carpet and near the hydraulic connection. Pumping the pedal making that verification could help to detect leak. Then follow the hydraulic line going to the slave cylinder attached to the transmission making a visual inspection for leaks.
If for any reason some air entered the circuit, the line could be purged from air bleeding the slave cyclinder as you do bleeding brake component.
If there is no air, no leak detected then it's probably an internal problem that you can't see. Remove the cap from the reservoir, depress the pedal. If the oil is moving in the reservoir then the master slave is probably bad otherwise I would suspect the slave.
I'm not an Isuzu technician.
Some other Gurus could complement or correct my saying.
Hope it will help
Dan
Hi:
You need to check your clutch master cylinder reservour, not your brake cylinder. It is located approx in front of the clutch pedal, outboard of the brake cylinder. If it is low, you need to inspect for leaks around it, the lines connecting it to the clutch slave cylinder that is mounted on the transmission.
Check master for fluid level, check line going to slave unit, check slave unit (any leaks, you have found problem) If master is full, it may be internally bypassing in that case it may not leak but will not put pressure into the line. (fluid goes around piston instead of being pushed) If master is low and no obvious leak found, look under dash where clutch rod goes into the back of the master. you may find fluid there.
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