excessive oil presure???
Thread Starter
|
New User
Joined: Apr 2009
Posts: 8
Likes: 0
From: Richmond Va
excessive oil presure???
Hello all, over the last few months at randoms times my oil presure spikes enough to blow the gasket out of my oil filter, and im looking for the cause of this.
Over the last two days this has happened at start up in the morning and not again til the next morning.... i recently flushed the oil with a flush product( dont remember the name) in an attempt to cure this problem... i guess it didnt work....
Also i have no breathers on the motor in an attempt to reduce the preasure.
Any and all help is appreciated , thanks eric
Over the last two days this has happened at start up in the morning and not again til the next morning.... i recently flushed the oil with a flush product( dont remember the name) in an attempt to cure this problem... i guess it didnt work....
Also i have no breathers on the motor in an attempt to reduce the preasure.
Any and all help is appreciated , thanks eric
Freshman User
Joined: Nov 2010
Posts: 48
Likes: 0
The breather is there to relieve crankcase pressure but won't affect oil pressure.
Also unsure what you meant by the engine having no breather. Plugging it up could cause lots of trouble, such as oil leaks from the crankshaft seals and sludge buildup inside the motor. Leaving them wide open can result in dust, dirt and other assorted crap getting inside the crankcase.
Sounds like the pressure relief valve is sticking. You didn't say what vehicle you're talking about or which engine you have but like Macattack said, it's probably inside the oil pan.
The good news is that your bearings probably aren't worn out.
Also unsure what you meant by the engine having no breather. Plugging it up could cause lots of trouble, such as oil leaks from the crankshaft seals and sludge buildup inside the motor. Leaving them wide open can result in dust, dirt and other assorted crap getting inside the crankcase.
Sounds like the pressure relief valve is sticking. You didn't say what vehicle you're talking about or which engine you have but like Macattack said, it's probably inside the oil pan.
The good news is that your bearings probably aren't worn out.
Thread Starter
|
New User
Joined: Apr 2009
Posts: 8
Likes: 0
From: Richmond Va
...sorry for the lack of info, its a 72 f100,4 x 2 longbed with a 360, 4 bbl, 3 speed on the tree ( also known as "BETTY" ).ive been driving this one about 8 years and this problem has been occuring for about 2 years at random times. i ment that i took the breathers off the valve covers in an attempt to relieve preasure while trying to figure out whats wrong. i assume the relief valve is attached to the oil pump?
Freshman User
Joined: Nov 2010
Posts: 48
Likes: 0
Either on the pump or adjacent to it. It's just a spring check valve and it's hard to think of how it could fail intermittently but maybe there's something floating aroind in there blocking the bypass flow now and then??? Either way, changing the valve will pobably fix it.
Thread Starter
|
New User
Joined: Apr 2009
Posts: 8
Likes: 0
From: Richmond Va
ill get my service manual from my 75 f250 trailer special out.. there should be a diagram in there to help.... now if i can only remember where i put that damn thing... thanks for the help guys, eric
Thread Starter
|
New User
Joined: Apr 2009
Posts: 8
Likes: 0
From: Richmond Va
....so the relief valve is in the oil pump..... that looks like so much fun.... ive almost gotta pull the whole motor to get enough room to get the darn thing out.......
Trending Topics
New User
Joined: Aug 2010
Posts: 18
Likes: 0
You might be able to do it without pulling the engine. I haven't been underneath mine to know how big the difference is between our generation and like a 76, but we changed an oil pump on my friend's 76 F250 with a 460 in it and we did it without pulling the engine or even having the truck up on a lift. Good luck!
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Freshman User
Joined: Nov 2010
Posts: 48
Likes: 0
Don't know about the '72 but the shop manual for my '68 simply says to remove the pan bolts, rotate the crank as necessary for the pan to clear the counterweights on the crank, and remove the pan. That makes it sound like a 30-minute job to drop the pan. Another 20 to replace the pump, 30-45 to put the pan back up, fill it with oil and drive. If it were me, I'd budget about 3 hours for the job; looks pretty straightforward.
Thread Starter
|
New User
Joined: Apr 2009
Posts: 8
Likes: 0
From: Richmond Va
all i know is the oil drain is bolt so close to the k member that i cannot use a socket wrench to remove the drain bolt... but ill look into the crank rotation thing..... but ill still probably have to lift the motor some....
Thread
Thread Starter
Forum
Replies
Last Post
CrazyMiracleMan
1987 - 1996 F150 & Larger F-Series Trucks
13
Oct 16, 2012 03:35 PM
884x4broncoII
1994.5 - 1997 7.3L Power Stroke Diesel
18
Dec 21, 2008 02:24 PM
martyf150
Ford Inline Six, 200, 250, 4.9L / 300
8
Feb 4, 2003 11:28 AM
