The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-22-2009, 06:46 PM   #1
79gmcc15
Gettin It One Pice At A Time
 
79gmcc15's Avatar
 
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
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.

__________________
RIP ELJAY

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 06:48 PM.
79gmcc15 is offline   Reply With Quote
Old 06-22-2009, 07:12 PM   #2
79gmcc15
Gettin It One Pice At A Time
 
79gmcc15's Avatar
 
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
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?
__________________
RIP ELJAY

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.
79gmcc15 is offline   Reply With Quote
Old 06-22-2009, 08:10 PM   #3
powerdriver 1958
Kid's Mechanic
 
powerdriver 1958's Avatar
 
Join Date: Nov 2006
Location: Kansas City
Posts: 8,241
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
powerdriver 1958 is offline   Reply With Quote
Old 06-22-2009, 08:22 PM   #4
79gmcc15
Gettin It One Pice At A Time
 
79gmcc15's Avatar
 
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
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?
__________________
RIP ELJAY

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
79gmcc15 is offline   Reply With Quote
Old 06-22-2009, 08:43 PM   #5
tvblazer78
Low & Fast!
 
tvblazer78's Avatar
 
Join Date: Jan 2007
Location: Knoxville, TN
Posts: 3,110
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...
tvblazer78 is offline   Reply With Quote
Old 06-22-2009, 08:45 PM   #6
tvblazer78
Low & Fast!
 
tvblazer78's Avatar
 
Join Date: Jan 2007
Location: Knoxville, TN
Posts: 3,110
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?
tvblazer78 is offline   Reply With Quote
Old 06-22-2009, 10:28 PM   #7
79gmcc15
Gettin It One Pice At A Time
 
79gmcc15's Avatar
 
Join Date: Oct 2004
Location: everett, washington
Posts: 2,688
Re: so is this an "Expensive" sound?

Quote:
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.
__________________
RIP ELJAY

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
79gmcc15 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:55 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com