Hello,
I have a 1971 manual shift Pinto. When I depress the clutch I hear "hissing
sound ". Can you tell me what might be causing this? Is the clutch in
anyway connected to the working of the brakes? What could this sound be or
lead to?
If my memory serves me correctly the brakes and clutch are not connected.
(Other than the pedals being beside each other)
If the engine is running smoothly when you hear the "hissing" sound,
I suspect it is not a vacuum sound you are hearing! It could just be the
throw out bearing making noise. So please have a professional "listen" before
you do anything.
I do remember this engine blowing out diaphragms on the anti-backfire valve
coming off the intake manifold. This will cause the car to make a "hissing
sound" and to idle too fast and may have an engine miss at idle.
Best wishes and thanks
for the question.
James Morris
.
