Oil pressure,problem? - Team Camaro Tech
Engine General Engine Discussion.

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 27 (permalink) Old Feb 12th, 10, 04:08 PM Thread Starter
Senior Tech
sako
 
Join Date: Feb 2009
Location: california
Posts: 324
Oil pressure,problem?

I noticed today my oil pressure was about 50-60 at idle and dropped down to 10 on the freeway. What the heck is going on? It used to be around 40-50 on the freeway. The thing is that the pressure goes up at lower rpms.
Whats going on with my engine?
Could it be my oil? im using a 5-40 synthetic oil.
I feel like I am sitting on a time bomb.

1969 SS camaro,emerald green with white hockey stripe.383 stroker with weiand supercharger.12 bolt 373 gears. 4 speed.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sako is offline  
Sponsored Links
Advertisement
 
post #2 of 27 (permalink) Old Feb 12th, 10, 04:55 PM
Gold Lifetime Member
Skip
 
Skeeter55's Avatar
 
Join Date: Feb 2008
Location: CA
Posts: 6,628
Re: oil pressure,problem?

Man i dono.... But what you can do is pull a valve cover off and fire it up and look at how much oil gets pushed up threw the pushrods... Also try another gauge if possible. Could be bearing clearance, could be that the oil pick up fell off. Someone will chime in and get you squared away.

I NEED TO HIT THE LOTTERY
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Skeeter55 is offline  
post #3 of 27 (permalink) Old Feb 12th, 10, 05:04 PM
Senior Tech
Rich
 
Join Date: Jul 2009
Location: North Jersey
Posts: 1,463
Re: oil pressure,problem?

Something is going on with the oil pump pickup.How long do you have to run at speed for this o happen?Can you do it with the car parked by holding it at 2500 rpm?
RichSchmidt is offline  
 
post #4 of 27 (permalink) Old Feb 12th, 10, 05:25 PM Thread Starter
Senior Tech
sako
 
Join Date: Feb 2009
Location: california
Posts: 324
Re: oil pressure,problem?

Rich, i will have more details when i test it again later on tonight when i go home from work.
Also, i put my hand under the gages and noticed a little bit of oil under the oil gage. Maybe its leaking and getting some air in there.
Do you think thats why the gage is not consistent.

1969 SS camaro,emerald green with white hockey stripe.383 stroker with weiand supercharger.12 bolt 373 gears. 4 speed.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sako is offline  
post #5 of 27 (permalink) Old Feb 12th, 10, 06:10 PM
Senior Tech
george
 
Join Date: Sep 2006
Location: detroit
Posts: 2,291
Re: oil pressure,problem?

Sounds like the oil pump is cavitating with rpm.Most likely due to a loose or seperated oil pump pickup tube.
Without a pickup close to the oil pan floor..the pump will start to create a vortex like a flushing toilet and introduce air into the oil.At idle rpm..the vortex effect is lessened and pressure returns.

George
68 Camaro
8-71 blown 461 Rat on E-85
fatblock is offline  
post #6 of 27 (permalink) Old Feb 12th, 10, 07:44 PM
Senior Tech
Steve
 
Join Date: Oct 2009
Location: Cincinnati
Posts: 2,208
Re: oil pressure,problem?

Sounds silly I am sure, but have you checked your oil level?

69 Pace Car and 69 Hard top
srode is offline  
post #7 of 27 (permalink) Old Feb 13th, 10, 12:02 AM
Senior Tech
 
Join Date: Oct 2007
Location: california
Posts: 389
Re: oil pressure,problem?

I had this problem before to make long story short oil pump pickup fell off and was laying in my oli pan.
msicks is offline  
post #8 of 27 (permalink) Old Feb 13th, 10, 03:45 AM
Tech Team
Howard
 
Join Date: Feb 2009
Location: Va. Beach, Va.
Posts: 92
Re: oil pressure,problem?

You may want to drain the oil pan and use an 1/8"thick wire or rod about 15" long in the drain plug hole to see if you can move the oil pick-up tube/screen that may be laying in the bottom of the pan from falling off the oil pump.If so,need to pull the engine to get the pan off to correct.Have the pick-up tube welded to the oil pump.The bottom of the screen housing should be 1/4"-5/16" from the bottom of the pan.You can use modeling clay/playdough wrapped in cellophane to determine thickness.

Just Having fun with all My Big Block Toys!!!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
bbmusclecars427 is offline  
post #9 of 27 (permalink) Old Feb 13th, 10, 07:48 AM
Senior Tech
Rich
 
Join Date: Jul 2009
Location: North Jersey
Posts: 1,463
Re: oil pressure,problem?

You dont usually have to pull the engine to get the pan off.You can jack te engine up off the mounts,and put a block or two of wood between the mounts ad he frame to hold it up.You need to rotate the crank to a certain position{I think the timing mark on the balancer needs to be at 5 O'Clock).Then the pan drops right out of any GM V8 car ever made.I have put rod bearings in many smallbocks with the enine in the car,so an oil pump is a no brainer.I will be doing this s weekend on he 400 smallblock in my 70 Camaro wit a big kickout pan.The pan and pump are full of milkshake from 2 cracked heads.I replaced the heads and will be dropping the pan beause the engine ost oil prssure when the oil became soft serve ice cream on a cold day.
RichSchmidt is offline  
post #10 of 27 (permalink) Old Feb 13th, 10, 09:12 AM
Senior Tech
Don
 
Join Date: Mar 2005
Location: Riverside, CA
Posts: 202
Re: oil pressure,problem?

Try a new oil filter first, rule out the simple things before you dive in.
BrewHog55 is offline  
post #11 of 27 (permalink) Old Feb 13th, 10, 09:18 AM
Senior Tech
Rich
 
Join Date: Jul 2009
Location: North Jersey
Posts: 1,463
Re: oil pressure,problem?

Very true Brewhog
RichSchmidt is offline  
post #12 of 27 (permalink) Old Feb 13th, 10, 10:36 AM
Gold Lifetime Member
Fred
 
Join Date: Nov 2006
Location: Seabeck WA
Posts: 8,375
Re: oil pressure,problem?

Quote:
Originally Posted by RichSchmidt View Post
You dont usually have to pull the engine to get the pan off.You can jack te engine up off the mounts,and put a block or two of wood between the mounts ad he frame to hold it up.You need to rotate the crank to a certain position{I think the timing mark on the balancer needs to be at 5 O'Clock).Then the pan drops right out of any GM V8 car ever made.I have put rod bearings in many smallbocks with the enine in the car,so an oil pump is a no brainer.I will be doing this s weekend on he 400 smallblock in my 70 Camaro wit a big kickout pan.The pan and pump are full of milkshake from 2 cracked heads.I replaced the heads and will be dropping the pan beause the engine ost oil prssure when the oil became soft serve ice cream on a cold day.
This sure brings back memories. It's THE reason to buy a shop crane and pull the engine.

One owner 69 Camaro,(yep, bought it new
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
)
RS SS Hugger Orange, L88, 4:10's tru-tack posi, ducted hood, Endura, spoilers.
TH400 (CX) with Coan 8" converter, GV-OD, 8 track still on console and best et 10.495,
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
128.79mph 1.428 60'
All with 1960's stuff. (except tires and converter)
+ MT Super Scavenger headers & 3" full exhaust with X pipe. 3700 lbs. with me in it.
1000cfm AED and HD Harold-Lunati SR, 725 lift with shaft rockers too.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Fred Ficarra is offline  
post #13 of 27 (permalink) Old Feb 14th, 10, 01:55 AM Thread Starter
Senior Tech
sako
 
Join Date: Feb 2009
Location: california
Posts: 324
Re: Oil pressure,problem?

Holy **** guys, Friday night was the worst day ever. Where do i start.
Ok, after work i jumped into the Camaro and started up, the oil pressure was at 45 at cold start. Once the engine was warmed up it dropped down to 30. Took off home, on the road at 2000-2500 rpm the pressure was up and down from 20-45. Drove about 4 miles then i started to hear some rateling noise from the engine and drove to the nearest gas station to pull into. The car starts and drives but when i press the gas the noise gets louder as i go faster.
Sounds like something took a **** in my engine, what could it be?
Called the tow truck to tow it home. The driver tries to put it on the flat bed and when the chain stretched to winch the car up, it snapped my front spoiler in half. This is where i lost it and almost killed the guy. Called the company and the guy was cool and told me he would take care of it. And towed the car to my house for free.
I know should of not driven the car, but i thought i would make it home with out and major problems. Boy was i wrong.
Any ways, what do you think hapend to my engine...?
Should i start looking around for a cherry picker?
I have never pulled an engine before and might need a lot of help from you guys. I will keep you posted.
OK, now you can start telling me how much i F$#%#ED up.

1969 SS camaro,emerald green with white hockey stripe.383 stroker with weiand supercharger.12 bolt 373 gears. 4 speed.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sako is offline  
post #14 of 27 (permalink) Old Feb 14th, 10, 07:34 AM
Senior Tech
Tim
 
77wolf10.85's Avatar
 
Join Date: Mar 2007
Location: Oklahoma
Posts: 3,222
Re: Oil pressure,problem?

aw, we've all let the smoke out of something or worked on smoked stuff that was at some point intact and giving us clues. That's how we learn the signs sometimes.

pull your oil filter and dump it across the palm of your hand. If it has 'sparklies' in it that make you want to puke just screw it back on the engine and let us know. Maybe take a pic of the oil that comes out of the filter first and post it.

Tim Smith
77wolf10.85 is offline  
post #15 of 27 (permalink) Old Feb 14th, 10, 08:37 AM
Senior Tech
Rich
 
Join Date: Jul 2009
Location: North Jersey
Posts: 1,463
Re: Oil pressure,problem?

If you were lucky the noise was the lifters bleeding down and when the oil pressure comes back the noise will go away.Worst case it is rod bearing noise,and you may need to rebuild the engine.If the rod bearings go to the point that they were making noise,there is little chance you will be able to just swap in some new ones,but if you pull the pan off to check the oil pump and the rod bearings are a litte iscolored what do you have to loose by swapping in a fresh set?
RichSchmidt is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome