CorvetteForum - Chevrolet Corvette Forum Discussion

C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

zero oil pressure

Thread Tools
 
Search this Thread
 
Old May 22, 2009 | 09:23 PM
Share
  #1  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default zero oil pressure
is there anything beside an oil pump failure that would give me 0 oil pressure?

The 383 stroker lt1/lt4 has about 20k on the clock.
Reply
0
Old May 22, 2009 | 09:40 PM
Share
  #2  
engle1147's Avatar
engle1147
Le Mans Master
Supporting Lifetime
 
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Default
The oil pump pickup might have a problem...might be blocked or loose.
Reply
0
Old May 22, 2009 | 10:10 PM
Share
  #3  
John A. Marker's Avatar
John A. Marker
Le Mans Master
15 Year Member
 
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Default
Can you unscrew the oil cap on the valve cover and see if the rockers are getting oil? If they are, the problem might be the oil pressure sending unit.

Anything that you did just prior to zero pressure? Or did it just happen?
Reply
0
Old May 22, 2009 | 10:57 PM
Share
  #4  
No Go's Avatar
No Go
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Default
What about a broken oil pump drive stub...the part that takes the place of the distributor.

It is made of plastic and held by one bolt...MORE used to sell a metal reinforcement incase of plastic failing (I pulled my 85,000 original out with a crack).

Hopefully it is just a bad sender...

Good luck.
Reply
0
Old May 22, 2009 | 11:28 PM
Share
  #5  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default
Originally Posted by John A. Marker
Can you unscrew the oil cap on the valve cover and see if the rockers are getting oil? If they are, the problem might be the oil pressure sending unit.

Anything that you did just prior to zero pressure? Or did it just happen?
Don't need to remove the covers, you can hear the rattling
Reply
0
Old May 22, 2009 | 11:32 PM
Share
  #6  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default
Originally Posted by John A. Marker
Can you unscrew the oil cap on the valve cover and see if the rockers are getting oil? If they are, the problem might be the oil pressure sending unit.

Anything that you did just prior to zero pressure? Or did it just happen?
No, I was just driving home from work and the check gauge light came on, unfortunitly I didn't hear the noise until I was pulling up the drive. I hope I didn't cause any serious damage!
Reply
0
Old May 23, 2009 | 03:27 PM
Share
  #7  
TWISTERUP's Avatar
TWISTERUP
Burning Brakes
 
Joined: Feb 2009
Posts: 785
Likes: 3
From: Richmond Virginia
Default
Originally Posted by No Go
What about a broken oil pump drive stub...the part that takes the place of the distributor.

It is made of plastic and held by one bolt...MORE used to sell a metal reinforcement incase of plastic failing (I pulled my 85,000 original out with a crack).

Hopefully it is just a bad sender...

Good luck.
Above is one possibilty or it's possible the pickup may have come loose from the pump (just a press fit)---years ago I tack welded the pickup in place--I don't know whether all builders do that today though JMO
Reply
0
Old May 28, 2009 | 06:05 PM
Share
  #8  
TWISTERUP's Avatar
TWISTERUP
Burning Brakes
 
Joined: Feb 2009
Posts: 785
Likes: 3
From: Richmond Virginia
Default
Had a chance to remove the oil pan yet ?
Reply
0
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-1

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-2

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-3

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-4

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-5

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-6

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-7

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-8

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-9

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
Old May 29, 2009 | 01:51 PM
Share
  #9  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default
Originally Posted by TWISTERUP
Had a chance to remove the oil pan yet ?
I had the car towed to the shop yesterday, and should have an idea of what is up this morning. I just didn't have the time to explore the possibilities. If I knew what to expect I could have dropped the pan and delt with it, but I was getting too many suggestions from the different people I talked with. I will post the outcome as soon as it is determined.
Thanks!
Reply
0
Old May 29, 2009 | 09:15 PM
Share
  #10  
No Go's Avatar
No Go
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Default
Bummer...

Hope you realize the stub oil pump drive I'm speaking of goes in thru the intake side...no reason to drop the pan.

Good luck!
Reply
0
Old Jun 1, 2009 | 12:53 AM
Share
  #11  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default
Originally Posted by No Go
Bummer...

Hope you realize the stub oil pump drive I'm speaking of goes in thru the intake side...no reason to drop the pan.

Good luck!
The pan was pulled, and the gear on the drive was worn excessively, metal fragments in the oil & filter, pulled the main caps /rod caps off - the bearings have been damaged slightly. The intake will be pulled, the oil pump drive replaced as well as all the other components along the way, and the bearings will be replaced as well. Things are not real good, but hope to have it back on the road by the end of the week.

Thanks,
Gary
Reply
0
Old Jun 1, 2009 | 09:25 AM
Share
  #12  
BrianCunningham's Avatar
BrianCunningham
Team Owner
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2001
Posts: 30,847
Likes: 293
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Default


One of the reasons I'm going to a drysump, is the quality of the pumps now days.

Which pump did you use?
Reply
0
Old Jun 1, 2009 | 06:41 PM
Share
  #13  
No Go's Avatar
No Go
Melting Slicks
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jun 2000
Posts: 3,215
Likes: 6
From: Tampa Florida
Default
By drive gear, do you mean the stub driveshaft? That gear can only be accessed by going thru the intake.

This may not be a oil pump issue whatsoever. SBC oil systems are one of the most reliable around...
Reply
0
Old Jun 3, 2009 | 04:49 PM
Share
  #14  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default
Originally Posted by BrianCunningham


One of the reasons I'm going to a drysump, is the quality of the pumps now days.

Which pump did you use?
It was a SBC high volume... The pump did not fail, the stub gear was the problem.
Reply
0
Old Jun 3, 2009 | 04:51 PM
Share
  #15  
garycr14's Avatar
garycr14
Thread Starter
Instructor
10 Year Member
 
Joined: Jun 2003
Posts: 151
Likes: 1
From: Newark CA
Default
Originally Posted by No Go
By drive gear, do you mean the stub driveshaft? That gear can only be accessed by going thru the intake.

This may not be a oil pump issue whatsoever. SBC oil systems are one of the most reliable around...
Yes, it is the gear on the stub driveshaft. The pump itself was fine, and was replace by removing the intake.

Gary
Reply
0
Old Jun 24, 2009 | 09:34 AM
Share
  #16  
catlettlt1's Avatar
catlettlt1
Instructor
 
Joined: Aug 2007
Posts: 215
Likes: 0
From: NEWPORT NEWS VA
Default
I had the same issue on my former LT1 at 10K miles. I have an LT4 now
but it still worries me I'm going with the comp cams composite gear.
High oil pressure will eat the oil pump drive gear up.
Reply
0

Get notified of new replies

To zero oil pressure

Back to Subforum
C4 Tech/Performance
View Next Unread
Which Alternator to Buy?




Click for Advanced Search
Reply Closed Thread Share
Forum Jump
Trending Topics

All times are GMT -4. The time now is 07:35 AM.

story-0
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-1
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-2
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-3
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-4
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-5
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-6
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-7
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-8
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-9
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE