Engine & Internal Chat about beefing up your Blazer's engine insides here.

Is this hole suppose to be here? # 4 cylinder

  #1  
Old 04-14-2012, 11:23 AM
Chevy33's Avatar
Junior Member
Thread Starter
Join Date: May 2010
Posts: 364
Chevy33 is on a distinguished road
Default Is this hole suppose to be here? # 4 cylinder

This engine has a ticking and knocking so I pulled and tore down to look. Is there suppose to be a hole here? The hole has some black sooty material inside.

Here is a link to another view you can zoom in on.http://i1137.photobucket.com/albums/...1999/005-5.jpg
 

Last edited by Chevy33; 04-14-2012 at 11:57 AM.
  #2  
Old 04-14-2012, 11:37 AM
Beginning Member
Join Date: Apr 2012
Location: Bernville, Pa
Posts: 41
91tbi4.3 is on a distinguished road
Default

i don't think its suppose to be there..
 
  #3  
Old 04-14-2012, 12:19 PM
Chevy33's Avatar
Junior Member
Thread Starter
Join Date: May 2010
Posts: 364
Chevy33 is on a distinguished road
Default

Apparently it is suppose to be there. There is one exactly like this on the #2 journal too.
 
  #4  
Old 04-27-2012, 02:45 AM
onebadsuv's Avatar
New Member
Join Date: Feb 2012
Posts: 83
onebadsuv is on a distinguished road
Default

nice sharp pic of the short block ! But ... holy cow - You tore down the engine to that extreme for a "ticking" ? Anyway , Yeah aren't those little holes oil passages ,for the journals lube.
Cylinder wall looks ok from here - how about the bearings surface ? Any scoring ect? Ticking is usually valve train related - top end , not bottom end .Knocking noise is worn/bad bearings . Probably not telling You anything You don't already know based on how far You've gone into Your motor already ! Let us know what You find
 
  #5  
Old 04-28-2012, 08:33 AM
Chevy33's Avatar
Junior Member
Thread Starter
Join Date: May 2010
Posts: 364
Chevy33 is on a distinguished road
Default The jist of things as they stand.

Yeah, I chased that ticking in the valve train. I had the lower intake off 3 times, replacing the lifters with a second used set and then with new set. I've determined after tearing it down that the engine suffered from a lack of lubrication.
I had the machine work done on the block but did nothing to the crank shaft. Once I got the block back I neglected to clean it myself. I did not clean the crank as I should have and I imagine the crank was blocked with some thick burnt oil. The second mistake I made was in installing this gasket covering the bypass valve.
The third problem was with this kink in the oil line.
The lesson learned here is clean your block and crank.
 
  #6  
Old 04-28-2012, 10:05 AM
BF Veteran
Join Date: May 2011
Location: SW Central OH
Posts: 2,252
pettyfog is a jewel in the roughpettyfog is a jewel in the roughpettyfog is a jewel in the rough
Default

Every machine shop USED to 'boil the block and crank' to clean the oil passges out. Wonder if...?
Probably not. Probably thanks to EPA

Not that I'll ever trust a rebuild shop, again. One screwing was enough. 'Performance Clinic' took a perfectly good used short block and turned it into crap. Cuz I assumed they were professional, just because they advertised on tv.
They went out of business soon after, of course.
 
  #7  
Old 04-28-2012, 11:28 PM
Rottidog's Avatar
BF Veteran
Join Date: Sep 2008
Location: Winnipeg, Manitoba
Posts: 2,523
Rottidog has a spectacular aura aboutRottidog has a spectacular aura about
Default

For cleaning a block of gunk in an older engine a friend of mine dumped the oil & added 6 quarts of kerosene, unhooked the coil & cranked the engine for 5 seconds. Waited a few seconds then repeated that 3 more times (allowing the starter to cool down). He did that for a couple days & the kerosene came out like old motor oil.
It dissolves all the crud in passages, corners etc.
I'm not so sure I'd try that lol but it does go after oil deposits. Not so sure what the next step is to make sure you get it all out & adding oil but I was amazed at the condition of the kerosene.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mattjphoto
General Chat
1
06-28-2014 06:57 PM
ben97blazer
Steering, Suspension & Drivetrain
6
09-25-2011 12:00 PM
mbar
2nd Gen S-series (1995-2005) Tech
1
11-10-2010 02:39 PM
Trede
2nd Gen S-series (1995-2005) Tech
2
10-18-2010 06:17 PM
88s10Blazer
Audio/Video Electronics
12
12-12-2006 01:08 AM


Thread Tools
Search this Thread
Quick Reply: Is this hole suppose to be here? # 4 cylinder


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

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 Amazon.com and affiliated sites.