Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

lost most oil pressure

Thread Tools
 
Search this Thread
 
Old May 11, 2008 | 03:10 AM
  #1  
Jammer's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Dec 2002
Posts: 3,657
Likes: 2
From: Albany, NY
Default lost most oil pressure

408 ci. when cold it was about 40 psi, within minutes recently it was 20 psi.. then 10 psi at idel these past few weeks. fresh oil, didnt replace filter. Made a 130 run and lost all oil pressure at idle now..10 psi at like 2500-3k rpm so I shut her down. I hear a tinking noise..not really a ticking..but uneven rattle. No knock. Not sure where to start but this was one of Jellys APE 408's, which many have had cam bearings fail.. any thoughts on best way to find the culprit.. or just yank and rebuild. Figured Id try and do a filter change 1st, but not many miles on motor (2500) and 3 filters in that time.

BTW, making 700 rw at 12ish lbs on this..twin T-60's.
Reply
Old May 11, 2008 | 03:41 AM
  #2  
99blancoSS's Avatar
Banned
iTrader: (115)
 
Joined: Feb 2005
Posts: 9,892
Likes: 3
From: ST Helens, OR
Default

shavings in the oil?
Reply
Old May 11, 2008 | 09:27 AM
  #3  
Jammer's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Dec 2002
Posts: 3,657
Likes: 2
From: Albany, NY
Default

just did it..so havnt looked... but nothing obvious on dipstick..will pull oil tonight
Reply
Old May 12, 2008 | 10:57 PM
  #4  
Jammer's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Dec 2002
Posts: 3,657
Likes: 2
From: Albany, NY
Default

Oil looks pretty good
.. I;m guessing cam bearings, since most of APE's motors had such issues.
Reply
Old May 12, 2008 | 10:59 PM
  #5  
99blancoSS's Avatar
Banned
iTrader: (115)
 
Joined: Feb 2005
Posts: 9,892
Likes: 3
From: ST Helens, OR
Default

Yeah thats not good
Reply
Old May 13, 2008 | 08:50 PM
  #6  
Urslozum's Avatar
Teching In
iTrader: (1)
 
Joined: Apr 2006
Posts: 9
Likes: 0
Default cam bearings??????

I was just wondering if you checked to see if that oil pump o-ring was torn....that will definately cause the symtoms you have. Just an idea....
Reply
Old May 13, 2008 | 09:52 PM
  #7  
427's Avatar
427
TECH Junkie
iTrader: (3)
 
Joined: May 2003
Posts: 3,898
Likes: 6
From: Clayton, North Carolina
Default

That does not sound good......
Cut the filter open and look inside, it will tell the story.

Kurt
Reply
Old May 14, 2008 | 10:28 AM
  #8  
Jammer's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Dec 2002
Posts: 3,657
Likes: 2
From: Albany, NY
Default

Originally Posted by 427
That does not sound good......
Cut the filter open and look inside, it will tell the story.

Kurt
I tried to reach you ... you was gone! PM me with new info!
Cutting filter open tomorrow.
Reply
Old May 14, 2008 | 10:29 AM
  #9  
Jammer's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Dec 2002
Posts: 3,657
Likes: 2
From: Albany, NY
Default

Originally Posted by Urslozum
I was just wondering if you checked to see if that oil pump o-ring was torn....that will definately cause the symtoms you have. Just an idea....

Not yet bro.. just getting all the accessories/wires/plumbing out of the way still/.
Reply
Old May 14, 2008 | 04:13 PM
  #10  
trans2000am's Avatar
TECH Fanatic
iTrader: (49)
 
Joined: Feb 2006
Posts: 1,518
Likes: 0
From: detroit
Default

i call up w2w im having some problem (iron 370) pressure is fine on start up but once i put stress on motor starts to drop down to 20psi i have no engine noise changed oil nothing......the guy i talked to said to check oring and to see if they put the shim in my oil pump.
Reply
Old May 14, 2008 | 05:00 PM
  #11  
Jammer's Avatar
Thread Starter
TECH Junkie
iTrader: (1)
 
Joined: Dec 2002
Posts: 3,657
Likes: 2
From: Albany, NY
Default

Originally Posted by trans2000am
i call up w2w im having some problem (iron 370) pressure is fine on start up but once i put stress on motor starts to drop down to 20psi i have no engine noise changed oil nothing......the guy i talked to said to check oring and to see if they put the shim in my oil pump.
I did contact w2w... but my issue was dif... 0 oil pressure at idel. Im still betting cam bearings... will post up in 2 weeks once swap takes place and I dismantle.
Reply




All times are GMT -5. The time now is 07:39 AM.