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Old 06-22-2009, 06:46 PM   #1
79gmcc15
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so is this an "Expensive" sound?

it does sound like a loose valve but I am sure they are all tight and adjusted right. I checked some of them. the motor does have a miss in it. I just did the plugs, gaped them at 45*, I "think" the wires are OK. I did notice before that when it would click, it would miss then when it stopped it was OK. it sounds like its coming from up-top. also, what is that thing that is attached to the passenger side manifold? there is a rod that disappears in the back of the motor. could that be causing the clicking? the rod behind the *canister* is loose.

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Last edited by 79gmcc15; 06-22-2009 at 06:48 PM.
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Old 06-22-2009, 07:12 PM   #2
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Re: so is this an "Expensive" sound?

oh, I meant to re-phrase the last question. I know the rod that is connected to the "canister" is not making the noise. what I am wondering is what it was connected to, could be?
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Work In Progress 1979 GMC C1500 Trailering Special.
Getting the truck done, one piece at a time.

“You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan

“I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

Last edited by 79gmcc15; 06-22-2009 at 07:13 PM.
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Old 06-22-2009, 08:10 PM   #3
powerdriver 1958
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Re: so is this an "Expensive" sound?

sounds like the rockers need adjusted,The little vac canister is for a vacuum operated heat riser the rod should be connected to a valve in the exhaust between the manifold and exhaust pipe
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Old 06-22-2009, 08:22 PM   #4
79gmcc15
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Re: so is this an "Expensive" sound?

to adjust them I can just start it up and loosen one till it starts clacking then tighten till its not then give it a 1/4 turn right?
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Work In Progress 1979 GMC C1500 Trailering Special.
Getting the truck done, one piece at a time.

“You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan

“I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby
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Old 06-22-2009, 08:43 PM   #5
tvblazer78
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Re: so is this an "Expensive" sound?

Quote:
Originally Posted by 79gmcc15 View Post
to adjust them I can just start it up and loosen one till it starts clacking then tighten till its not then give it a 1/4 turn right?

Yep...
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Old 06-22-2009, 08:45 PM   #6
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Re: so is this an "Expensive" sound?

And you may have a bad lifter for it to just start doing that. Did you change oil here in the past week or two?
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Old 06-22-2009, 10:28 PM   #7
79gmcc15
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Re: so is this an "Expensive" sound?

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Originally Posted by tvblazer78 View Post
And you may have a bad lifter for it to just start doing that. Did you change oil here in the past week or two?
yes I did, about 3 weeks ago.
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