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 Noisy lifter

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JimmyRigs



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PostSubject: Noisy lifter   Fri Oct 14, 2011 6:02 pm

My #2 intake is making a bit of noise, pulled the valve cover off and ran it listening to all with a pry bar on the stud and #2 intake is a bit louder than the rest. It's a 96 lt1 with stock valve train. Are the lifters known to collapse in these or might I look elsewhere? This has happened before but it usually went away with an oil change not this time.
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sdstick

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PostSubject: Re: Noisy lifter   Mon Oct 17, 2011 7:55 pm

Sticky lifters are common on higher mileage cars.
Run some ATF in the oil 500 miles or so before the oil change.
Usually that will free them up.
If your not comfortable with this dont do it. (I have with good results)
Cold weather it happens much worse.
Replacing will certainly work (but....)

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Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
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mikiehews

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PostSubject: Re: Noisy lifter   Thu Jan 30, 2014 6:28 pm

I too have what sounds like a "noisy lifter". Going to try heavier weight oil and see what happens.
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sdstick

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PostSubject: Re: Noisy lifter   Thu Jan 30, 2014 10:34 pm

That wont work (IMO)
Its either sticking which is build up on the lifter...or slow to pump up (which would require lighter oil)
Unless of course your motor is loose as hell in which case add heavy oil & sell it.. Razz .. Shocked 

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Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
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1984twodoor

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PostSubject: Re: Noisy lifter   Thu Jan 30, 2014 10:52 pm

sdstick wrote:
That wont work (IMO)
Its either sticking which is build up on the lifter...or slow to pump up (which would require lighter oil)
Unless of course your motor is loose as hell in which case add heavy oil & sell it.. Razz .. Shocked 

Heavy oil is for a knock, some fancy pant mobil one and mystery might be the ticket for the lifter. I'm with Steve on this one.
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mikiehews

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 8:11 am

before I left work last night I added half a quart of ATF (something I had red in a forum) just to see what happens. Nothing happened! I suppose I can change my oil with a lighter weight. The 2014 full size GM trucks use 0w20 synthetic. I don't beat on my car and change the oil every 2 k.
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sdstick

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 8:53 am

Give the AFT some time, obviously ( because it can be added to oil) its not abrasive.

I ran it for 500-1000 miles before a couple or 3 oil changes & it cleared it up a little

Once the lifters get weak youre still going to have to wait in the freezing AM's for the pressure to come up & the lifters to pump
(thats why I say lighter weight oil....to bring pressure up faster upon cold start)

Thats how I tell when I can throw it in gear...I listen to that happen & wait for the quiet (on the RMW with 200K)

Dont confuse all of that with the broken manifold bolt exhaust leak that does the same type of thing.

_________________
Steve


96BBB 28K 3.42 Bolt-ons
95BBB 100K 3.73 383 New DD...already broke fixt the 4L60E twice
95 Black WB4 Hole...ee...grail
96 Black WB4 No holes in this
95BBB 189K 3.08 Old DD Stolen...by Matt. Cool
Whine..eee...Silver LS6
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mikiehews

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 9:08 am

it's been noisy for awhile. The weather hasn't helped. I'll give the ATF more time. Thanks for the tips.
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Matt Trakker

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 11:41 am

My Tahoe does this. If it has sat overnight in the cold, when I start it in the morning I'll get what I thought was a piston slap noise that's commonly associated with the LS engines, but the lifter thing is common also. It lasts for 20 seconds or so...if I get impatient and drive it anyway it goes away faster. At the advice of Al I put some ATF in a few weeks ago before I had the oil changed, but I didn't have enough time to plan it right and only drove it 100 miles or so (usually I change it myself so I know when I'm going to have time to do it). I think I used half a bottle. Anyway, it did make a difference. I'll probably put some MMO in and leave it with the oil to see what happens, then when put ATF in again and drive it for 500+ miles.
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mikiehews

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 12:59 pm

Matt Trakker wrote:
My Tahoe does this.  If it has sat overnight in the cold, when I start it in the morning I'll get what I thought was a piston slap noise that's commonly associated with the LS engines, but the lifter thing is common also.  It lasts for 20 seconds or so...if I get impatient and drive it anyway it goes away faster. At the advice of Al I put some ATF in a few weeks ago before I had the oil changed, but I didn't have enough time to plan it right and only drove it 100 miles or so (usually I change it myself so I know when I'm going to have time to do it).  I think I used half a bottle.  Anyway, it did make a difference.  I'll probably put some MMO in and leave it with the oil to see what happens, then when put ATF in again and drive it for 500+ miles.



Okay. thanks.
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Cadet57

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 2:41 pm

My brothers 305 had a lifter tick. We added a quart of Marvel Mystery Oil during the next oil change. It went away almost entirely. You can hear it a little at start up but otherwise, its gone. The kid that bought it off my brother has been driving it daily for a year without it coming back too.
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Matt Trakker

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PostSubject: Re: Noisy lifter   Fri Jan 31, 2014 6:33 pm

Mike, apparently I was typing in shorthand with my post there, I meant to say I was going to add the ATF 500 miles before my next oil change. lol

There are videos on Youtube of people doing this to really clapped out, high mileage engines, showing the gunk that falls out of the drain on the oil pan when they change it afterward, pretty crazy.
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Machine-De-Zine

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PostSubject: Re: Noisy lifter   Sun Feb 02, 2014 5:26 am

.
Various GM V-8 engines from those years were notorious for cold start piston skirt "clatter", even when brand new, and IIRC particularly the 454s.

This noise would mostly be gone after full operating temperatures were reached.

OEM Pistons skirts were designed to expand up to the correct "quiet clearance" at full normal temps, but are often quite loose while cold.

… Valve lifter noise could result from improper preload due to cam lobe, lifter or rocker wear, nuts backing off, press-in studs pulling out, valve tip breakdown, etc.

Checking lifter pre-load is easier for many people to do than an oil change, once they discover how easy it is to do.

Valve cover off.

Use a breaker bar or long handle ratchet to accurately rotate crankshaft (battery disconnected for safety)

Note: Small block chevy rockers (Gen I&II, NOT LSx!) are arranged in the following order:

Front  < 2       4        6       8  >  Rear
Front   E - I / I - E / E - I / I - E   Rear
Front  < 1       3        5       7  >  Rear

Rule #1: Adjust lifter pre-load on cam base circle, to find OEM cam's base circle, choose one cylinder at a time and...

Rule #2: At Exhaust opening point, adjust Intake roughly 5/8ths turn tighter from ZERO LASH (give or take 1/8th turn)

Rule #3: At Intake closing point, adjust Exhaust down 5/8ths turn tighter from ZERO LASH.

To find ZERO LASH: (assuming the cam is on the base circle)  

Back off (loosen) adjuster nut until pushrod is just slightly, but definitely loose and then reverse direction tightening the adjuster nut as you...

Sneak up on the ZERO LASH point by feel as you rotate the pushrod with your fingers…

At a certain point the pushrod is lightly trapped between the closed valve rocker seat and TOP of the hydraulic lifter's plunger spring "zero preload" point.  

If you over-tighten the nut too far, you will compress and bottom out the hyd lifter plunger stroke and start to hold the valve open off it's seat.

I like to do this procedure with all of the spark plugs out. (With a good chart, all 16 lifters can be adjusted in four crank positions!)

Some people claim good results setting all 16 with only two positions, but only mildly cammed engines allow this #1 & #6 method to be accurate enough.

Two position method: [ on firing pos #1 adj. (In) 1-2-5-7, & adj. (Ex) 1-3-4-8 ] … then [ on firing pos #6, adj. (In) 3-4-6-8, & adj. (Ex) 2-5-6-7 ].


If you like this 4 position approach to save time,

Set the CRANK with piston #1 at firing position and…

Adjust Intakes (#2 ) & (#7 ) . .  Exhausts (#4 ) & (#8 )

Rotate CRANK 180 degrees C/W (One half turn)

Adjust Intakes (#1 ) & (#8 ) . . Exhausts (#3 ) & (#6 )

Rotate CRANK 180 deg C/W (1/2 turn) #6 firing position

Adjust Intakes (#3 ) & (#4 ) . . Exhausts (#5 ) & (#7 )

Rotate the CRANK 180 deg C/W (1/2 turn)

Adjust Intakes (#5 ) & (#6 ) . . Exhausts (#1 ) & (#2 )

In the shop, it is usually done with an indexed degree wheel and a dummy lifter under a dial indicator, but the above method works great in your driveway.
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mikiehews

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PostSubject: Re: Noisy lifter   Mon Feb 03, 2014 2:15 pm

great info thanks. ^^^^^^^
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mikiehews

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PostSubject: Re: Noisy lifter   Mon Feb 17, 2014 8:00 pm

so tonite I did an oil change. I used 0w20 Dexos (required for all 2014 sierra's and silverado's). Going to see how the engine reacts if anything........
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1984twodoor

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PostSubject: Re: Noisy lifter   Mon Feb 17, 2014 11:54 pm

mikiehews wrote:
so tonite I did an oil change. I used 0w20  Dexos (required for all 2014 sierra's and silverado's). Going to see how the engine reacts if anything........

Holy crap, I did my first one of those the other day. 8.5 qts!?!? Are you effing kidding me! It's even worse I can't use the wall tap! carrying that many quarts is playing with fire. I'm just glad I'm not paying for it!  Arrow 

hope the issue is solved BTW
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mikiehews

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PostSubject: Re: Noisy lifter   Tue Feb 18, 2014 8:40 am

18 degress this morning when I started my car. I have to say the engine was a little quieter. Talking with one of my techs (world class) he suggested dumping in a small amount of posi additive into the crankcase.


Yeah 8 1/2 quarts of dexo's it's like a $80 oil change.
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Tomz9C1

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PostSubject: Re: Noisy lifter   Tue Feb 18, 2014 10:21 am

I used Seafoam on my GMC Safari 4.3 l. 1 Lifter was noisy as hell, I think I used only a half a can Let it idle for 20-30 min and it slowly quieted right down. Put Mobil 1, filter in and that was 3yrs ago. Still running great!
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