strange clutch.... - Alfa Romeo Bulletin Board & Forums
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post #1 of 12 (permalink) Old 08-13-2019, 01:39 PM Thread Starter
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strange clutch....

last few weeks my clutch seems to not quite disengage....starting in first or reverse...grinds most of the time ( when I have shifted to gear while engine off , starting w clutch down in gear, no problem)... master cyl and slave are pretty new +-0 a year....not sure what it could be...can springs in clutch plate go weak ?
will take to mechanic tomorrow hopefully....

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post #2 of 12 (permalink) Old 08-13-2019, 02:59 PM
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flush old fluid out, blead system... might be cheap fix, also check the slave for leaks, and look at pedals are the brake and clutch pedal same hight?
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post #3 of 12 (permalink) Old 08-13-2019, 07:06 PM
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Sounds like a cylinder is leaking or bypassing. could happen even if new.
Assuming that it has been working fine prior to this event and nothing new has been changed.
Is the clutch assembly relatively new as well as the cylinders?
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post #4 of 12 (permalink) Old 08-14-2019, 07:08 AM Thread Starter
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Quote:
Originally Posted by bianchi2 View Post
flush old fluid out, blead system... might be cheap fix, also check the slave for leaks, and look at pedals are the brake and clutch pedal same hight?
thx.....will check pedals today...

1974 Spider (Dellorto carburated)
recent previously: 58 Giulietta, 69 Firebird 400 convertible, 71 TR6, 68 GT6
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post #5 of 12 (permalink) Old 08-14-2019, 07:29 AM Thread Starter
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Quote:
Originally Posted by pantera928 View Post
Sounds like a cylinder is leaking or bypassing. could happen even if new.
Assuming that it has been working fine prior to this event and nothing new has been changed.
Is the clutch assembly relatively new as well as the cylinders?
no, only cylinders were replaced last year.

1974 Spider (Dellorto carburated)
recent previously: 58 Giulietta, 69 Firebird 400 convertible, 71 TR6, 68 GT6
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post #6 of 12 (permalink) Old 08-14-2019, 08:32 AM
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Maybe the clutch fork is cracked and bending when pressure is applied. The slave cilinder will have a proper stroke. Had this issue on another Italian car.

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post #7 of 12 (permalink) Old 08-14-2019, 08:38 AM Thread Starter
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Originally Posted by Ruud View Post
Maybe the clutch fork is cracked and bending when pressure is applied. The slave cilinder will have a proper stroke. Had this issue on another Italian car.

Ruud
thanks...will suggest to mechanic...hope to take it in today...if weather permits

1974 Spider (Dellorto carburated)
recent previously: 58 Giulietta, 69 Firebird 400 convertible, 71 TR6, 68 GT6
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post #8 of 12 (permalink) Old 08-14-2019, 08:49 AM
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It might be possible to remove the clutch fork through the hole in the bell housing to inspect it.

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post #9 of 12 (permalink) Old 08-14-2019, 08:51 AM Thread Starter
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Quote:
Originally Posted by Ruud View Post
It might be possible to remove the clutch fork through the hole in the bell housing to inspect it.

Ruud
thx

1974 Spider (Dellorto carburated)
recent previously: 58 Giulietta, 69 Firebird 400 convertible, 71 TR6, 68 GT6
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post #10 of 12 (permalink) Old 08-14-2019, 09:59 AM
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OK, reading through this. New master and slave. Worked properly after replacement. No leaks. Reservior is full. System properly bled when items replaced so no air in line. No mechanical play.

My standing pedal spider has an adjustable fork from the pedal to the master. My hanging pedal spider does not. So there aren't really any mechanical adjustments to make.
Also, if you have a rectangular reservoir with two chambers and one fill cap, the rear chamber is clutch. When you remove the cap and look from the top, the brake chamber may be full when the clutch chamber is empty. You have to look at the rear chamber from outside to see how much fluid is in it. The clutch chamber will not fill at all until the brake chamber is full.

I can only think of three things:
Make sure the clutch chamber has fluid in it.
If it does not, perform a full bleed bleed from the slave. (You might want to do this anyway)
Get under the car and check the clutch throw arm for play between the slave and the arm. There should be none.

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post #11 of 12 (permalink) Old 08-14-2019, 11:02 AM Thread Starter
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Quote:
Originally Posted by Hodgepodge View Post
OK, reading through this. New master and slave. Worked properly after replacement. No leaks. Reservior is full. System properly bled when items replaced so no air in line. No mechanical play.

My standing pedal spider has an adjustable fork from the pedal to the master. My hanging pedal spider does not. So there aren't really any mechanical adjustments to make.
Also, if you have a rectangular reservoir with two chambers and one fill cap, the rear chamber is clutch. When you remove the cap and look from the top, the brake chamber may be full when the clutch chamber is empty. You have to look at the rear chamber from outside to see how much fluid is in it. The clutch chamber will not fill at all until the brake chamber is full.

I can only think of three things:
Make sure the clutch chamber has fluid in it.
If it does not, perform a full bleed bleed from the slave. (You might want to do this anyway)
Get under the car and check the clutch throw arm for play between the slave and the arm. There should be none.
thanks.....yes, I only took cap off to verify full.....

1974 Spider (Dellorto carburated)
recent previously: 58 Giulietta, 69 Firebird 400 convertible, 71 TR6, 68 GT6
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post #12 of 12 (permalink) Old 08-14-2019, 02:43 PM
Richard Jemison
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Clutch issue

Most likely it`s a air in the system issue. If you dont have leaks behind the MC or from the slave. First bleed the system by burping the line connection at the MC. do it with pressure on the petal.
Other ways to improve the efficiency are in my post # At;

Richard Jemison
RJR Racing

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