Thread: Lifter Tap When Cold

Results 1 to 3 of 3
  1. #1 Lifter Tap When Cold 
    SE Level Member
    Join Date
    Mar 2018
    Location
    NJ
    Posts
    62
    Thanks (Received)
    0
    Likes (Received)
    3
    Dislikes (Received)
    0
    Our newly acquired '03 GTP has a pretty loud lifter tap when it's cold. It has 72k miles on it. It takes a few minutes at idle to go away, or will go away almost immediately if you rev it up a bit a couple of times or simply start driving it. It doesn't do it when it's warmed up if you restart it within an hour or so. The duration of the tapping depends on how long it's been sitting. So I'm thinking leaky lifter(s). The oil looks good and I'm not losing any coolant, so it's not an intake manifold thing. It's definitely not a bearing sound (been there, done that, got the t-shirt). My Avalanche has been tapping when cold the entire 7 years I've owned it so I'm not terribly concerned about this thing. But...I'm wondering if heavier weight oil would fix it. The previous owner has always used Royal Purple in it so I'm wondering if it's the thinner, synthetic oil that's contributing to the tapping.

    If I were to go about changing the lifters, it does not appear to be a bad job assuming I can get the pushrods out of the RH cylinder bank without them hitting the firewall. Is this the case?
    Reply With Quote  
     

  2. #2 Re: Lifter Tap When Cold 
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    39,919
    Thanks (Received)
    63
    Likes (Received)
    166
    Dislikes (Received)
    5
    my car would do this when i was over due for a oil change. i started to run 3 qts of 10-30 and 2 of 10-40. never did it again unless i was way over due on a oil change.

    issue is a lifter is bleeding off. you can change em but gm says its ok as long as it goes away in a minute or so. you can get the push rods out easy too.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
    Reply With Quote  
     

  3. #3 Re: Lifter Tap When Cold 
    SE Level Member
    Join Date
    Mar 2018
    Location
    NJ
    Posts
    62
    Thanks (Received)
    0
    Likes (Received)
    3
    Dislikes (Received)
    0
    Quote Originally Posted by Scottydoggs View Post
    my car would do this when i was over due for a oil change. i started to run 3 qts of 10-30 and 2 of 10-40. never did it again unless i was way over due on a oil change.

    issue is a lifter is bleeding off. you can change em but gm says its ok as long as it goes away in a minute or so. you can get the push rods out easy too.
    It takes a bit longer to go away if you leave it idling - closer to 3-5 mins. But it does go away immediately once you start to drive it (higher RPMs). My truck gets louder when it's overdue for an oil change as well. The oil change monitor on the GP says ~50% and the oil on the stick looks like it's right out of the bottle. I'll do a mix of 10-30 and 10-40 the next change and see how that goes.

    Thanks!
    Reply With Quote  
     

Similar Threads

  1. Lifter & lifter guide change HELP.
    By 97Darktealgp in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 1
    Last Post: 06-30-2016, 10:34 PM
  2. How can you tell if a lifter is bad
    By Eric Whitter in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 3
    Last Post: 02-06-2013, 06:45 PM
  3. cold weather brings cold engine
    By Garrett Mofford in forum Engine
    Replies: 7
    Last Post: 12-31-2012, 08:45 PM
  4. Lifter tick?
    By My GTP 97 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 2
    Last Post: 02-22-2010, 01:03 PM
  5. Bad Lifter?
    By DWosik13 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 15
    Last Post: 04-02-2009, 10:03 PM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •