Here is what a Dirty Lifter sounds like (knock tick noise) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jonlopes · 04-18-2016, 11:31 PM

It has been quite a while but I figured I would create this post for future people who are searching the forum trying to diagnose a similar problem. First of all here is a thread that has all of the symptoms listed:

http://67-72chevytrucks.com/vboard/s...d.php?t=672540

And here is a video of what the ticking / knocking noise sounds like:

Click Here

I attempted many things to try and diagnose the issue but nothing seemed to work. A buddy of mine told me that it sounded like a dirty lifter to him and to change the oil and put a quart of Marvel Mystery Oil in the place of one of the quarts of oil. Yup, after a few trips around the block it worked. My truck is running just fine and I have a little nest egg saved up for the rebuild that I am not going to have to use. I hope this helps someone in the future.

n33k0 · 04-19-2016, 08:55 AM

I'm suffering through this same situation right now. The ticking on my engine lasts for a few minutes after a cold start, then goes away until the engine cools down again. MMO didn't do much to help, I have a can of Seafoam I'm going to use as a last resort before pulling the intake manifold off to change the lifters.

Here is a thread I created with a link to a video where you can hear the same ticking/knocking noise.
http://67-72chevytrucks.com/vboard/s...d.php?t=698959

snipescastle2 · 04-19-2016, 01:17 PM

Try adding a quart of ATF (trans fluid) it's mostly detergent and after a day or two (maybe more,depending on how varnished they are) the noise should be gone, change your oil and motor on!
Ben

davepl · 04-19-2016, 02:01 PM

You know what they call that? "Way easier than talking the passenger valve cover off a big block AC truck", that's what!

**Gregski** · 06-06-2016, 09:58 PM

well shoot let me join the party as I got a similar ticking noise on my '74 350 manual, but what blows my mind is that I had it before I put brand new cam, lifter, and pushrods in, I even swapped the cylinder heads for a set of Vortec Ones and I still got a tickin' sound, it is driving me crazy, engine has less than 250 miles on it after Top End swap (bottom end was left alone) running 20W-50 STP mineral oil with Lucas zinc additive for the flat tapped cam, oil was changed after break in

almost not existant at 750 RPM when it idles than it becomes more pronounced above 1000 RPM

valves adjusted after break in and about 100 miles on it

any suggestions

04-18-2016, 11:31 PM	#1
Jonlopes Registered User Join Date: Mar 2013 Location: Anaheim Hills, CA Posts: 323	Here is what a Dirty Lifter sounds like (knock tick noise) It has been quite a while but I figured I would create this post for future people who are searching the forum trying to diagnose a similar problem. First of all here is a thread that has all of the symptoms listed: http://67-72chevytrucks.com/vboard/s...d.php?t=672540 And here is a video of what the ticking / knocking noise sounds like: Click Here I attempted many things to try and diagnose the issue but nothing seemed to work. A buddy of mine told me that it sounded like a dirty lifter to him and to change the oil and put a quart of Marvel Mystery Oil in the place of one of the quarts of oil. Yup, after a few trips around the block it worked. My truck is running just fine and I have a little nest egg saved up for the rebuild that I am not going to have to use. I hope this helps someone in the future. __________________ 1971 Cheyenne Big Block Longhorn

04-19-2016, 08:55 AM	#2
n33k0 Registered User Join Date: Sep 2014 Location: Florida Posts: 184	Re: Here is what a Dirty Lifter sounds like (knock tick noise) I'm suffering through this same situation right now. The ticking on my engine lasts for a few minutes after a cold start, then goes away until the engine cools down again. MMO didn't do much to help, I have a can of Seafoam I'm going to use as a last resort before pulling the intake manifold off to change the lifters. Here is a thread I created with a link to a video where you can hear the same ticking/knocking noise. http://67-72chevytrucks.com/vboard/s...d.php?t=698959 __________________ Nick 1972 Chevrolet C10 Stepside

04-19-2016, 01:17 PM	#3
snipescastle2 Registered User Join Date: Mar 2009 Location: WARRENSBURG,MISSOURI,64093 Posts: 1,518	Re: Here is what a Dirty Lifter sounds like (knock tick noise) Try adding a quart of ATF (trans fluid) it's mostly detergent and after a day or two (maybe more,depending on how varnished they are) the noise should be gone, change your oil and motor on! Ben __________________ "Persistence is the twin sister of Excellence.one is a matter of quality,the other, a matter of time" “Serious Black” my 1971 Short Bed Fleetside Sold to an outstanding man in Lees Summit,Mo. “Gone, but by no means,Forgotten”

04-19-2016, 02:01 PM	#4
davepl Registered User Join Date: Aug 2006 Location: Redmond, WA Posts: 6,332	Re: Here is what a Dirty Lifter sounds like (knock tick noise) You know what they call that? "Way easier than talking the passenger valve cover off a big block AC truck", that's what! __________________ 1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible

06-06-2016, 09:58 PM	#5
Gregski Post Whore Join Date: Aug 2014 Location: Sacramento, CA Posts: 10,803	Re: Here is what a Dirty Lifter sounds like (knock tick noise) well shoot let me join the party as I got a similar ticking noise on my '74 350 manual, but what blows my mind is that I had it before I put brand new cam, lifter, and pushrods in, I even swapped the cylinder heads for a set of Vortec Ones and I still got a tickin' sound, it is driving me crazy, engine has less than 250 miles on it after Top End swap (bottom end was left alone) running 20W-50 STP mineral oil with Lucas zinc additive for the flat tapped cam, oil was changed after break in almost not existant at 750 RPM when it idles than it becomes more pronounced above 1000 RPM valves adjusted after break in and about 100 miles on it any suggestions



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