New Valve Tapping... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Thread Tools Search this Thread
Old 10-28-2007, 06:45 PM   #1
Junior Member
Posts like a V-Tak
Thread Starter
Join Date: Sep 2007
Location: Andover, MA
Posts: 27
Thanks: 0
Thanked 0 Times in 0 Posts
mshipon is on a distinguished road
Default New Valve Tapping...

I changed my UIM and LIM gaskets a few weeks ago and indeed there was some (minor) antifreeze leakage when we opened the manifold up. It does seem like some might have mixed with the motor oil. The oil was changed about 2 months ago. Anyway, one morning this week when I started the car (~50 degrees), the valves were tapping something fierce. They continued to make noise for about a quarter mile and then got quiet again. They had never done this before. As soon as I got to work, I did another oil change with Valvoline synthetic high mileage 5w/30 oil and a new K&N oil filter. The oil monitor was at 38%. It still taps a little when I start the car and then quickly goes away.

What is going on? Is it bad gas? Should I use 10w/30 oil now that it'* getting cold? How about the oil pickup in the pan? Maybe it wasn't set right when I changed the pan gasket about 2 months ago?

Any ideas?

Thanks for the help!
mshipon is offline   Reply With Quote
Old 10-28-2007, 10:07 PM   #2
Senior Member
Posts like a Northstar
Join Date: Apr 2007
Location: Edinboro, PA
Posts: 567
Thanks: 0
Thanked 0 Times in 0 Posts
jbmark33 is on a distinguished road

Anytime I hear the word tap, I want to crawl into a hole and hide. When my intrepid with the 2.7L started to tap, I put in a thicker oil to increase the oil pressure, and it starved the engine of oil and it was over at that point. Still not sure to this day what happened... all I know is it started smelling like gas... and it kocked reallllly loud and had no power... so it ended up in the junkyard and $150.00 dollars worth of a $4,000 car. end rant.

Sorry, didn't mean to scare you, but that problem led up to a series of unfortunate events.. but ultimately led me to my bonneville...

but i am going to let someone else take it from here... i wouldn't put in anything above 10w30 ...just my 2 cents.
jbmark33 is offline   Reply With Quote
Old 10-28-2007, 11:09 PM   #3
Senior Member
True Car Nut
Join Date: Jul 2004
Location: Grand Rapids, Mi
Posts: 5,656
Thanks: 0
Thanked 0 Times in 0 Posts
Archon is on a distinguished road

Did you change the oil when you changed the gaskets? If coolant gets into the oil, it will start to create problem with the crank or rod bearings. So, if it has been leaking for a while, you may have just been too late. Or not changing the oil after swapping the gaskets will cause the same problem. You may be hearing noise from the bearings, rather than lifter noise. What is the oil pressure reading?
Archon is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
strange tapping noise ptrfair 2000-2005 11 04-19-2007 05:55 PM
re-tapping an o2 bung hole harofreak00 Lounge 21 01-21-2007 05:27 PM
Engine tapping...? zuper8 1992-1999 15 01-02-2007 09:08 PM
Clicking / Tapping Sound vptruman 1992-1999 4 05-05-2006 01:43 PM
Tapping gauges into fuses Allmachtige 1992-1999 3 09-08-2003 11:07 AM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 10:28 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.