Please help with my clutch

Jay633 · 11-21-2011, 04:00 AM

Okay so all of a sudden I start my car this morning and the clutch pedal is all loose... I pushed it down and it goes down like nothing. It wont cone back up wither so it wont let me put it in gear because it's fully depresses... the clutch fluid is fine, so I don't know what else it can be its a 88long supra 5 speed

Awyman18 · 11-21-2011, 01:56 PM

check ur clutch master cylinder for a leak or air bubbles

87hilux7mge · 11-21-2011, 04:09 PM

yep, master cyl or slave. im thinking slave if the fluid is still topped up.

Busted Knuckles · 11-21-2011, 10:23 PM

Jay, the clutch pedal will sit on the floor anytime it gets no pressure build-up. I've noticed this in many makes and models. You'll need to reach down and pull it back up.

If the system is sound, and it was just expelling an air bubble, the pedal should now be firm.

If there is still no pressure, try bleeding the clutch system. If that doesn't work, you probably have a bad master cylinder that cannot transfer pressure to the slave cylinder. This is based on your mention of plenty of fluid and no obvious leaks.

87hilux7mge · 11-22-2011, 04:57 AM

at the same time, ive had the slaves fill up the weather protection boot with fluid, and not leak. visually i couldnt tell anything was wrong, but had no pedal and still had enough fluid in the res. this happened on my 93 nissan altima.

cre · 11-22-2011, 05:07 AM

The fluid level may also appear fine if you check it while the master cylinder is still pressed in. Prop the clutch pedal up and then check the fluid level. While you're on the floor check if the floor or the firewall (coming down from the cylinder) feel wet or oily.

87hilux7mge · 11-22-2011, 07:13 AM

agreed, +1

Jay633 · 11-23-2011, 03:07 AM

Thanks so much guys well it ended it up being a faulty slave cylinder I believe but the master was already old too so I replaced both now its good to go......... on a side note I have a question. Will my supra be able to pass smog with custom three inch exhaust if I put the cats back on?

cre · 11-23-2011, 04:44 AM

The diameter of pipe doesn't affect the volume of air moving through the pipe at any given RPM (just pressure and velocity) and has nothing to do with the contents of the exhaust.

Jay633 · 11-23-2011, 05:12 AM

With that being said the I should pas as long as long as the cats are good

11-21-2011, 04:00 AM	#1
Jay633 3" Exhaust Join Date: Mar 2010 Location: Oxnard Posts: 109	Please help with my clutch Okay so all of a sudden I start my car this morning and the clutch pedal is all loose... I pushed it down and it goes down like nothing. It wont cone back up wither so it wont let me put it in gear because it's fully depresses... the clutch fluid is fine, so I don't know what else it can be its a 88long supra 5 speed

11-21-2011, 04:09 PM	#3
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	yep, master cyl or slave. im thinking slave if the fluid is still topped up. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

11-22-2011, 04:57 AM	#5
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	at the same time, ive had the slaves fill up the weather protection boot with fluid, and not leak. visually i couldnt tell anything was wrong, but had no pedal and still had enough fluid in the res. this happened on my 93 nissan altima. __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

11-22-2011, 05:07 AM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The fluid level may also appear fine if you check it while the master cylinder is still pressed in. Prop the clutch pedal up and then check the fluid level. While you're on the floor check if the floor or the firewall (coming down from the cylinder) feel wet or oily. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

11-22-2011, 07:13 AM	#7
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	agreed, +1 __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.

11-21-2011, 01:56 PM	#2
Awyman18 3" Exhaust Join Date: Apr 2011 Location: columbus Posts: 151	check ur clutch master cylinder for a leak or air bubbles

11-21-2011, 10:23 PM	#4
Busted Knuckles 12psi boost Join Date: Dec 2007 Location: Atlanta Posts: 300	Jay, the clutch pedal will sit on the floor anytime it gets no pressure build-up. I've noticed this in many makes and models. You'll need to reach down and pull it back up. If the system is sound, and it was just expelling an air bubble, the pedal should now be firm. If there is still no pressure, try bleeding the clutch system. If that doesn't work, you probably have a bad master cylinder that cannot transfer pressure to the slave cylinder. This is based on your mention of plenty of fluid and no obvious leaks.

11-23-2011, 03:07 AM	#8
Jay633 3" Exhaust Join Date: Mar 2010 Location: Oxnard Posts: 109	Thanks so much guys well it ended it up being a faulty slave cylinder I believe but the master was already old too so I replaced both now its good to go......... on a side note I have a question. Will my supra be able to pass smog with custom three inch exhaust if I put the cats back on?

11-23-2011, 04:44 AM	#9
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The diameter of pipe doesn't affect the volume of air moving through the pipe at any given RPM (just pressure and velocity) and has nothing to do with the contents of the exhaust. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

11-23-2011, 05:12 AM	#10
Jay633 3" Exhaust Join Date: Mar 2010 Location: Oxnard Posts: 109	With that being said the I should pas as long as long as the cats are good

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