New Clutch Won't Release (Page 1/2)
Doug85GT JUL 20, 09:47 PM
88 4 Cylinder Base
5 spd Isuzu year unknown (from a junk yard)
New Luk Clutch
New Fiero Store Cast Release Arm
New Clutch Slave Cylinder

I am stumped. I posted a couple weeks ago about my new clutch being very soft. I got everything together enough to start the engine and test it out. The clutch will not release.

I took video of me pushing the clutch pedal with my pole. It was a bit tricky with my phone in the other hand. It looks like normal operation to me. The only thing that seems off is the slot on the clutch fork does not line up with the clutch arm.

What could I have screwed up or might be broken that could cause a brand new clutch not releasing?



If worse come to worse, I have a 4 spd from an 85 GT that I can put on the car. I assume I would use the same clutch.
Patrick JUL 20, 10:36 PM

To save us looking up your original thread... how far (measured carefully, not guessed at) is your slave moving?
Doug85GT JUL 20, 10:50 PM
I just measured it at 3/4".


Edit: I just noticed that my clutch pedal is lower than my brake pedal. I guess that means I need a new master cylinder.

[This message has been edited by Doug85GT (edited 07-20-2019).]

AsaBergman JUL 20, 10:55 PM
I looked into the clutch arm/shaft, the shaft has a locating notch that bolt goes through so that isn't the issue. It's almost certainly a hydraulic issue. 3/4 isn't enough travel.

Also, I came across this post:
http://www.fiero.nl/forum/A...23-2-126583.html#p11

As you said you changed the clutch arm you should check if the bolt is hitting the transmission case.

[This message has been edited by AsaBergman (edited 07-20-2019).]

Doug85GT JUL 20, 11:03 PM

quote
Originally posted by AsaBergman:

I looked into the clutch arm/shaft, the shaft has a locating notch that bolt goes through so that isn't the issue. It's almost certainly a hydraulic issue. 3/4 isn't enough travel.

Also, I came across this post:
http://www.fiero.nl/forum/A...23-2-126583.html#p11

As you said you changed the clutch arm you should check if the bolt is hitting the transmission case.




I checked the travel before I installed the transmission. The bolt that the Fiero Store sent was about 1/4" too long and was hitting. I ended up using two thick washers on the other end of the bolt to take up the extra length that was hitting.
Doug85GT JUL 20, 11:15 PM
The new master cylinder is order and will be here Thursday. Thanks for pointing me in the right direction.
Patrick JUL 21, 01:58 AM

quote
Originally posted by Doug85GT:

I just measured it at 3/4"



Needs to be about 17/16"


quote
Originally posted by Doug85GT:

I just noticed that my clutch pedal is lower than my brake pedal. I guess that means I need a new master cylinder.



It usually indicates that either the banjo and/or the clutch pedal is bent.
AsaBergman JUL 21, 04:43 AM

quote
Originally posted by Patrick:

It usually indicates that either the banjo and/or the clutch pedal is bent.



I'm not sure but I believe by 88 they came with the steel pedals?
Patrick JUL 21, 10:52 AM

quote
Originally posted by AsaBergman:

I'm not sure but I believe by 88 they came with the steel pedals?



Nothing is unbendable.

From Here...
Doug85GT JUL 21, 12:00 PM
The banjo rod is bent and the master cylinder is leaking.