Re: Lifter recommendation [message #370964 is a reply to message #370963] |
Thu, 05 January 2023 20:01 ![Go to previous message Go to previous message](/GMCforum/theme/default/images/up.png) ![Go to next message Go to previous message](/GMCforum/theme/default/images/down.png) |
Larry
![United States United States](/GMCforum/images/flags/us.png) Messages: 2875 Registered: January 2004 Location: Menomonie, WI
Karma:
|
Senior Member |
|
|
Matt Colie wrote on Thu, 05 January 2023 08:56Larry,
If the lifter is just noisy, it may just be gummed up. That be the case, you might do a change to a lighter weight synthetic for at least one change. It may get in there and make it quiet down a little. Sure is easier than pulling the heads.
Matt
Matt,
It is noisy on cold start-up. Clattering goes away in about a minute of running. Oil is Mobil 1 0W40. Then starts clattering again when running down the freeway at 2100 rpm for 10-15 minutes. Clatter eventually goes away when off the freeway in 30-40mph traffic. Oil pressure runs at 30-35 cold start, and gains to 40 at hwy speeds. The warmer the engine gets, seems to gain 2-3lbs. Son-in law has made regular 3K oil changes since new with only Mobil 1 oils. I don't think it is a gummed up issue. Seems like lifters that are just worn out. JWIT. Thanks for the suggestion.
Larry ![Smile](images/smiley_icons/icon_smile.gif)
78 Royale w/500 Caddy
Menomonie, WI.
[Updated on: Thu, 05 January 2023 20:02] Report message to a moderator
|
|
|