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Sticking Lifter on 98 Z71?? Need help

This is a discussion on Sticking Lifter on 98 Z71?? Need help within the Technical / Maintenance forums, part of the General Discussion category; Hey everyone. I recently had a noise that I've never heard on my truck, and honestly dunno what it is, ...

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    98 Chevy Z-71 ksstang's Avatar
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    Sticking Lifter on 98 Z71?? Need help


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    Hey everyone. I recently had a noise that I've never heard on my truck, and honestly dunno what it is, but... thinking it might be a sticking lifter. Thought I'd see what everyone here thinks.

    Yesterday morning (Sunday) I go outside to run and fill my truck up with gas, its roughly 27* out... I jump in... fire it up and notice a noise that I've never heard before. It was pretty apparent it was there. Sounded like a ticking noise. I immediately freak out... pop the hood and listen. It was hard for me to diagnose where it was coming from. So... I shut the hood, jump back in and let it warm up another minute or so. I decide to take off.... and head down the road a 1/4 of a mile or so. It begins to slowly go away, get quieter.... and then its gone. Truck was carrying GREAT oil pressure this whole time.. even at idle.. etc. So.. I go about my business, run my errands, stop a couple places, and never got it to do it again.

    So... fast forward to this morning. I go outside to head to work at 5:30am. Jump in, fire it up and it makes that noise again, except not near as bad, and only lasted maybe 5 seconds. Again, great oil pressure, etc. I go in work, work until lunch time, go outside to head to lunch, fire it up, and it did it for maybe 2-3 seconds this time.

    So.... I'm just confused at what it could be. I dunno whether its a combination of the colder weather, or what. I've never noticed it doing it in the past when it got this cold. The truck currently has roughly 91k on it.

    Just kinda wondering what you all think, and what I should do. Whether to keep driving it or what. Well, thanks in advance to anyone that might have some ideas.

    Kyle
    2004 Duramax LLY, EFILive with DSP5 Switch, Straight Piped, Eagle Alloy Wheels, Hankook ATM's

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    Intake Gasket Specialist daleearnhardt01's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    Could be a lifter, could be an exhaust leak, could be slight rod knock. There was a problem with slighly oversized rod bearings from the factory in '98. Take a long screwdriverand put your ear on the handle and probe around and see if you can pinpoint the sound any more....
    Last edited by daleearnhardt01; 12-31-2007 at 08:47 PM.
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    Re: Sticking Lifter on 98 Z71?? Need help

    a
    Last edited by ToolOutfitters; 01-10-2008 at 05:45 PM.

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    Registered User shermantic's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    I would recommend if u think it is a lifter but a full can of sea foam lifter/ cleaner in it! I have had lifter problems in 4 of my 21 chevy 1500 work trucks! I know a bit in that area on a 98 it doesn't not have adjustable rocker arms either it my be there the rest of the old chevys life!

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    Registered User 951500's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    put a liter of tranny fluid in with your oil, and drive it for a bit , Tranny fluid is great for freeing up sticking lifters, and it's only $3.00 make sure you do not over fill your oil , if you have to remove about a litre first, than do it. or put a litre of Lucus Oil stablizer in it. I had that problem before mostly cold starts, it will tick until it is warmed up.

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    Can I help you? ksukats57's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    sounds like harmless piston slap to me. especially since it goes away- Check out this thread:
    Cold start Piston Slap


    2006 Tahoe Z71

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    Re: Sticking Lifter on 98 Z71?? Need help

    I dont think a harmless piston knock would last several minutes warming up and a 1/4 mile drive down the road. If it does, you have problems. Noisy lifter sound more like it to me.

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    Re: Sticking Lifter on 98 Z71?? Need help

    My 98 has has a sticking lifter for sometime now. Its usually on colder days when I start it it will tick for a little bit and eventually quiet up. Piston slap sounds nothing like a sticking lifter, not to mention piston slap wasn't a well known issue till the 99-02 Gen3 engines for Chevy trucks.

    You can try adding some Lucas/Seafoam/Dexron to your oil in hopes of it freeing the bad lifter. Sometimes it works, sometimes it doesn't. If that doesn't work, the only way to fix it is to replace the lifter itself. This requires pulling the intake manifold off to get at the lifter valley.

    In all honesty, if it only sticks occasionally, I wouldn't worry about it. Mine has been sticking for over a year now, but it hasn't gotten worse. If you notice the frequency of it sticking or if it gets to be a really loud hammering noise, then its time to replace asap.
    Last edited by 98GreenMachine; 01-01-2008 at 08:39 AM.
    08 HHR LS - 2.2 | 5 speed | 30 MPG

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    Re: Sticking Lifter on 98 Z71?? Need help

    Use seafoam, I had a sticking lifter in my 98 454 and had tried everything to clear it up, the only thing that worked was seafoam, it went away within 10 miles of driving. If it is a lifter it won't hurt anything unless it gets worse, but it will also pull timing out of your engine if the knock sensor picks it up, which affects power and milage.
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    98 Chevy Z-71 ksstang's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    Cool, thanks everyone. I am going to monitor it for alittle while longer. I just hope it isnt anything major. As I stated, after it goes away the truck clears up and runs 100% normal, no power loss or anything. Its the first time I've EVER noticed it, and its not like I'm hard on my vehicles either. They get treated with ubber respect. Well, hopefully it clears up or doesnt get worse. We'll see.
    2004 Duramax LLY, EFILive with DSP5 Switch, Straight Piped, Eagle Alloy Wheels, Hankook ATM's

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    98 Chevy Z-71 ksstang's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    Well, I just went outside after making my last post to fire it up and see how it sounded today. It hardly made the noise at all... for maybe a second or so... and it was gone. Once again had great oil pressure from the get go, etc etc.

    Its a nice warm 14* here right now with a windchill of 2*. YAY!
    2004 Duramax LLY, EFILive with DSP5 Switch, Straight Piped, Eagle Alloy Wheels, Hankook ATM's

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    Re: Sticking Lifter on 98 Z71?? Need help

    Its 5* outside with a below 0 wind chill and I just started my truck and it was dead silent.

    Its a goofy thing with lifters. It seems sometimes the colder it is the less the bad lifter bleeds down. My bad one usually makes more noise when its warmer out, possibly due to it bleeding down all the way in hot temps.

    It sounds like yours is pretty minimal, I wouldn't worry. Before you do your next oil change, dump a can of seafoam in the crankcase and run that for 10-15 minutes. That will let the seafoam dissolve any crud on the lifter and hopefully free it up.


    Have you had to change your intake gaskets yet?
    08 HHR LS - 2.2 | 5 speed | 30 MPG

    98 K1500 Z71 - 204k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 14 MPG

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    Hired Goon Aloicious's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    Quote Originally Posted by ksstang
    Well, I just went outside after making my last post to fire it up and see how it sounded today. It hardly made the noise at all... for maybe a second or so... and it was gone. Once again had great oil pressure from the get go, etc etc.

    Its a nice warm 14* here right now with a windchill of 2*. YAY!
    yeah, mine has developed what I feel is a sticky lifter as well. it's been going on for about a year, however it only makes noise on a cold start at low ambient temps. once the truck warms up a little it is fine. and just like you I have great oil pressure. I've maintained it well while I've had it, but after 12 years and 120k miles, little stuff like this can happen. I've never seen any detremental effects from it, I just try to avoid revving it while cold, and let it sit and idle to warm up for a few mins before I take off.

    I am prepping for a cam swap and am going to change the lifters as well, so it should hopefully fix the issue.

    1996 C1500 ECSB 5.7L AKA the "LS31", distributorless w/LS2 coils, RHS Heads, ZZ4 Cam, T56 6 speed, 12200411 PCM, 4.88s...Coming soon: forged twin turbo 383..

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    98 Chevy Z-71 ksstang's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    I have not done intake gaskets yet. I haven't noticed any loss in anitfreeze or anything either, that i'm aware of.

    So... if I decide to go the seafoam route before I do my next oil change, which is needed. Do I just dump it in through the oilfill? Add it directly to the oil thats in there now without draining anything out? Just curious.
    2004 Duramax LLY, EFILive with DSP5 Switch, Straight Piped, Eagle Alloy Wheels, Hankook ATM's

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    0_o o_0 0_o o_0 98GreenMachine's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    Quote Originally Posted by ksstang
    I have not done intake gaskets yet. I haven't noticed any loss in anitfreeze or anything either, that i'm aware of.

    So... if I decide to go the seafoam route before I do my next oil change, which is needed. Do I just dump it in through the oilfill? Add it directly to the oil thats in there now without draining anything out? Just curious.
    The reason I asked about the intake gaskets is that if you have to replace those in the future, that would be the best time to replace the lifter since you would have the intake manifold off anyways.


    And yes, just empty the can directly into the oil fill tube. Let the engine run for 10-15 minutes and give the seafoam a chance to work. After that, just change your oil as normal. Just remember that this is not a guaranteed fix, its just a cheap thing to try that may fix it. I tried this with my lifter issue and it didn't do anything.
    Last edited by 98GreenMachine; 01-01-2008 at 01:30 PM.
    08 HHR LS - 2.2 | 5 speed | 30 MPG

    98 K1500 Z71 - 204k | L31 | 60E | 3.73's | 3" BL | 33x12.5x15 Dick Cepek F-C II's | Dynomax Ultra Flo X DI/DO | 14 MPG

    84 S15 Jimmy 2dr 4x4 - engine/tranny all rebuilt

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    98 Chevy Z-71 ksstang's Avatar
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    Re: Sticking Lifter on 98 Z71?? Need help

    Sounds good everyone. I think I'll try the seafoam. I've been also thinking about swapping intakes on the truck. I dunno whether thats a wise decision or not. Does Edelbrock make a good aftermarket intake for the fuel injection vortech motors? I just figured if I decided to do that, I would just replace all the lifters at that time. I dunno whether I will or not, or whether anything is even offered.
    2004 Duramax LLY, EFILive with DSP5 Switch, Straight Piped, Eagle Alloy Wheels, Hankook ATM's

 

 

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