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ZjustinZ
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PostPosted: Sat Jul 23, 2011 8:43 pm 
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Location: Enfield, CT
Thats the thing, I havent touched the a/c...I'm a t-tops off kind of guy 8) It only seems to happen when i accelerate.
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Frank T
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PostPosted: Sat Jul 23, 2011 11:05 pm 
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Using a stethoscope or a rod against your ear, check the rear cylinder exhaust gasket while you run up the revs. A blown gasket can sound like a mechanical KLIK KLIK KLIK, and the firewall is thin enough to transmit such a noise into the cabin. If it was #6 exhaust port (or even #6 sparkplug) leaking, it would sound like it was under the dash, from the cabin.

If the gasket appears OK, place the rod against the cam cover at various places along its length, to zee if you can locate a single noisy valve. *(DANGER ~ moving parts! Stethoscopes and long rods do not hold up well against spinning fans, twirling pulleys or moving belts).

Frank

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Kathy & Rick
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PostPosted: Sun Jul 24, 2011 8:04 am 
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Location: 5 mi. from Frank
And you git a slap up'side the head fer bein' so careless....
~Rick~

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All Z Best,.......Kathy & Rick

1969 Z.CAR (#00013 10/69) 8/30/76
1969 ITSA.Z (#00171 11/69) 8/24/73
1970 OLD.Z (#06289 6/70) original owner
1971 510 2dr since 12/31/75
1969 1600 rdstr (our 160-Z)
1971 (#19851 1/71) sold
1975 75.Z (#01343 1/75)
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Frank T
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PostPosted: Sun Jul 24, 2011 11:14 am 
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:roll: Been there, done that... :oops:

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ZjustinZ
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PostPosted: Sun Jul 24, 2011 12:58 pm 
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So after some careful listening I found out the sound was coming from under the drivers side right above the pedals. I've heard the a/c vacuum control solenoids can cause the noise. Can i just take those out? I plan on removing the entire a/c system soon anyway.
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Frank T
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PostPosted: Sun Jul 24, 2011 2:46 pm 
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I'm not at all familiar with those, Justin. Do they look like they're connected in any way with the main power brake servo lines? If you removed them, would it/could it affect the brakes in any way?

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ZjustinZ
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PostPosted: Sun Jul 24, 2011 5:55 pm 
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Not sure...time to break out some vacuum diagrams :roll:
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Frank T
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PostPosted: Sun Jul 24, 2011 8:04 pm 
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Or you could unplug it and try it slowly in the driveway or an empty parkinglot.

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ZjustinZ
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PostPosted: Wed Jul 27, 2011 8:31 am 
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Problem solved! I unplugged the hoses and plugged em up and now theres no more noise :D
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Frank T
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PostPosted: Wed Jul 27, 2011 9:06 am 
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The mouse escaped! :)

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