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#1 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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Since you are all on this page! Help
When I drive down the road, I hear a steady, constant clicking. IS this lifter noise and is it normal?
I am changing the valve cover gaskets today and I thought I would look into this while the covers are off. thanks for your input. Ron
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#2 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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DOES THE CLICKING CHANGE WITH THE RPM'S OF THE ENGINE???
IF SO IT'S LIFTERS.... IF NOT IT'S SOMETHING ELSE ![]() |
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#3 |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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It could be. You need to isolate where the sound is coming from.
If it is present at idle with the engie in park, get a lenght of garden hose (or just about any other hose or a piece of pipe) and put one end on your ear, and probe the engine bay with the other end. You will know it when you find the source of the noise...it will get really loud through the hose.
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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#4 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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It stays the same steady noise. You can hear it real good when you really listen to it on a long drive.
I have a buddy that it really bothers him. After he told me this, I notice it much more. thanks Ron
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#5 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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If it is just lifter noise, then what is the solution for it?
I am taking the valve covers off either way, so do they need adjusting, and if so, how? thanks guys. Ron (LOOK, Post #100 and my truck for my avatar!)
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#6 |
Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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its possible that its an exhaust leak dont overlook that lifters ticking and exhaust leaks sound very similar at times
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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#7 |
Registered User
Join Date: Nov 2003
Location: Mandan, ND
Posts: 422
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With the valve covers off, is there something I can do to see if lifters are loose or need adjusting?
Or should I leave it alone and not worry about it? thanks Ron
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Life is full of choices and a Chevy is the best choice. 1990 Chevy SWB |
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#8 |
Registered User
Join Date: Jul 2003
Location: north of Phx AZ about 30 miles
Posts: 698
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Since you are taking the covers off go ahead and follow the valve adjustment procedure. With a cylinder on tdc you can adjust intake and exhaust valves. Tighten the nut until all lash is removed, twist the pushrod in your fingers while tightening the nut, when resistance is felt there is zero lash. Tighten nut an additional 1/2 to 3/4 turn. Start this procedure on the #1 cylinder then rotate crank 1/4 turn then do the next cylider in the firing order, then another 1/4 turn....
Just so you know Chevrolet is an acronym for "Can Hear Every Valve Rattle On Long Extended Trips."
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Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold |
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#9 |
Robert Olson Transport
![]() Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,293
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if you dont know about them dont mess with it until you have someone around who does know. if the noise stays the same the whole time its not lifters
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Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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#10 |
Don't say "Oops!", Doctor
Join Date: Nov 2003
Location: Houston, TX
Posts: 677
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Can you tell if the "click" is at engine speed or 1/2 engine speed? If you're not used to troubleshooting by ear, this may not make much sense, but it can really help diagnose the problem. The garden hose idea can help a great deal, too.
Since the click is constant, I doubt it's valve train related. Sure, it won't hurt to go ahead and set the valves, but remember that Chevys don't like 'em tight. Walker's method will work. Another shadetree Chevy method is to back it off slowly until it starts "talking" then tighten it until it juuuust doesn't. It's not scientific, but it's how I've set 'em for years. See if you can answer these questions... 1. Where does the sound come from? Front? Back? Left? Right? 2. Is it a high-pitch click (like a screwdriver tapping an oil filter) or a low-pitch click (like a wooden hammer handle tapping an oil pan)? 3. How fast is it? Is it slow (like the tempo of "Love Me Do" by the Beatles) or fast (like a heavy metal rampage)? 4. Does it happen when cold? Hot? Both? 5. Automatic or manual? If automatic, does it happen when the truck's not in a drive gear? 6. Has anything changed recently? New plugs? Tune up? HEI swap? Oil change? Anything? Other things that can "click" include... - Fuel pump - Distributor (all kinds of possibilities) - Heat riser flap - Lifter Hope we can help!
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'Mutt 1968 CST LWB: R.I.P. 1967 Chevelle: TPI 454 beast 1967 C10 SWB: Claimed when Bumpster didn't put it on his list |
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#11 |
Registered User
Join Date: Jan 2003
Location: Santa Fe, Texas
Posts: 250
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One other thing to consider is the speedometer. My 72 had a bad cable that would click. The sound gets faster with speed but doesn't drop with RPM like lifters would. Just a thought if nothing else pans out.
Mike |
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#12 | |
Formerly yellow72custom
Join Date: May 2001
Location: Austin, TX
Posts: 7,531
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Quote:
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'72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg |
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