Clutch Master Cylinder Resorvoir Empty / Cap Stuck?! - ZR-1 Net Registry Forums

SteelBlueZR1 · 08-30-2011

My 1991 ZR1's Clutch Resorvoir cap is stuck and the resorvoir appears to be empty. Does anyone have any other ideas on removing the cap that I've tried turning counter-clockwise with my hand and a large wrench? I am concerned about breaking the plastic resorvoir. I tried pushing down while turning, all to no avail.
Also, my car has just 3,700 miles and came out of storage, so what should I look for as the cause of fluid loss? The clutch operates, but first gear and gear are somewhat cranky at times.
Last, what do you think about using Prestone synthetic Dot4 Fluid when I finally open this and flush and refill the clutch resorvoir? Thanks in advance for the help.

tccrab · 08-30-2011

Push down on the cap and rotate it 1/4 turn counter clockwise then peel it up from one edge.
It might have developed a vacuum inside from the loss of fluid.
My advice would be to not even bother trying to open the cap and re-filling the reservoir.
You have a leak.
It will not magically go away.
It will get worse and strand you somewhere.
You will not be happy.
Replace both the master and slave and be done with it.

TomC
'Crabs

QB93Z · 08-30-2011

I think you just need to turn harder. There is no trick to it. Give me a call and stop by. We will get it off.

Jim
443-244-1347

SteelBlueZR1 · 09-05-2011

Wow,I finally got the cap off with a wrench and managed not to break anything... Turns out the resorvoir was overfilled, not empty and lack of airspace caused vacuum stuck cap and clutch issue. Issue now resolved with clutch bleed and flush. Car still a bit tough in first sometimes, but owners manual says this can happen and to lift up on clutch slightly and depress to engage first.

lbszr · 09-07-2011

Red/Red is faster......but that's a sharp Z!!!!

lbszr · 09-07-2011

What is the interior color?

QB93Z · 09-07-2011

Glad you got it fixed Bert.

Jim

SteelBlueZR1 · 09-07-2011

Quote:

Originally Posted by lbszr

What is the interior color?

Steel Blue Leather Interior.

08-30-2011	#1
SteelBlueZR1 Join Date: Aug 2011 Location: Evergreen, Co. Posts: 344	Clutch Master Cylinder Resorvoir Empty / Cap Stuck?! My 1991 ZR1's Clutch Resorvoir cap is stuck and the resorvoir appears to be empty. Does anyone have any other ideas on removing the cap that I've tried turning counter-clockwise with my hand and a large wrench? I am concerned about breaking the plastic resorvoir. I tried pushing down while turning, all to no avail. Also, my car has just 3,700 miles and came out of storage, so what should I look for as the cause of fluid loss? The clutch operates, but first gear and gear are somewhat cranky at times. Last, what do you think about using Prestone synthetic Dot4 Fluid when I finally open this and flush and refill the clutch resorvoir? Thanks in advance for the help. __________________ Bert Rankin 1991 ZR1 Steel Blue / Steel Blue #1029 Haibeck chip, slotted rotors, camber brace, C-beam plates, OBX exhaust, Nitto NT555 tires [SIGPIC][/SIGPIC]

08-30-2011	#2
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,658	Re: Clutch Master Cylinder Resorvoir Empty / Cap Stuck?! Push down on the cap and rotate it 1/4 turn counter clockwise then peel it up from one edge. It might have developed a vacuum inside from the loss of fluid. My advice would be to not even bother trying to open the cap and re-filling the reservoir. You have a leak. It will not magically go away. It will get worse and strand you somewhere. You will not be happy. Replace both the master and slave and be done with it. TomC 'Crabs __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]

08-30-2011	#3
QB93Z Join Date: May 2007 Location: Westminster, Maryland Posts: 3,688	Re: Clutch Master Cylinder Resorvoir Empty / Cap Stuck?! I think you just need to turn harder. There is no trick to it. Give me a call and stop by. We will get it off. Jim 443-244-1347 __________________ If it isn't fun, you aren't doing it right! 1990 Black ZR-1 - sold 1993 Quasar Blue ZR-1 1994 Competition Yellow ZR-1 1995 Dark Purple ZR-1 Maryland State Coordinator WAZOO Member

09-05-2011	#4
SteelBlueZR1 Join Date: Aug 2011 Location: Evergreen, Co. Posts: 344	Re: Clutch Master Cylinder Resorvoir Empty / Cap Stuck?! Wow,I finally got the cap off with a wrench and managed not to break anything... Turns out the resorvoir was overfilled, not empty and lack of airspace caused vacuum stuck cap and clutch issue. Issue now resolved with clutch bleed and flush. Car still a bit tough in first sometimes, but owners manual says this can happen and to lift up on clutch slightly and depress to engage first. __________________ Bert Rankin 1991 ZR1 Steel Blue / Steel Blue #1029 Haibeck chip, slotted rotors, camber brace, C-beam plates, OBX exhaust, Nitto NT555 tires [SIGPIC][/SIGPIC]

09-07-2011	#5
lbszr Join Date: Nov 2006 Location: dayton,ohio Posts: 425	Re: Clutch Master Cylinder Resorvoir Empty / Cap Stuck?! Red/Red is faster......but that's a sharp Z!!!! __________________ [FONT=Comic Sans MS][COLOR=red]"I wanna go fast!!"[/COLOR][/FONT] [FONT=Comic Sans MS][COLOR=#ff0000]-- Ricky Bobby[/COLOR][/FONT]