low oil pressure
Thread Starter
|
New User
Joined: Oct 2009
Posts: 17
Likes: 0
low oil pressure
1st post for me.
I have a 87 f250 with the big 460 motor, carburated don't drive it much, less than 2 k per year, yesterday drove on freeway and noticed that my oil pressure seamed low - less than 10% on the guage it would move up to 15-20 % when increasing the rpm to 3k or so but would then return to 10%. Started climbing a grade and bam the temperature guage climbs... pull over and check the coolant level is ok with no leaks. Continue driving 10 minutes to destination shut of engine and it boils over and looses all of the coolant, had it towed it home.
Can low oil pressure cause the engine to overheat? likely causes? I'm thinkin a clogged oil cooler? any input appreciated.
I have a 87 f250 with the big 460 motor, carburated don't drive it much, less than 2 k per year, yesterday drove on freeway and noticed that my oil pressure seamed low - less than 10% on the guage it would move up to 15-20 % when increasing the rpm to 3k or so but would then return to 10%. Started climbing a grade and bam the temperature guage climbs... pull over and check the coolant level is ok with no leaks. Continue driving 10 minutes to destination shut of engine and it boils over and looses all of the coolant, had it towed it home.
Can low oil pressure cause the engine to overheat? likely causes? I'm thinkin a clogged oil cooler? any input appreciated.
Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
it is.
the gauge in the dash is really an idiot light, it moves if the psi drops below 7 or the sender is faulty.
sounds like your engine is not getting enough oil, so i say the screen is clogged.
the gauge in the dash is really an idiot light, it moves if the psi drops below 7 or the sender is faulty.
sounds like your engine is not getting enough oil, so i say the screen is clogged.
Post Fiend
Joined: May 2004
Posts: 11,289
Likes: 6
From: Lakewood, Ohio
no oil pressure = death to engine
how long? depends.
get a mechanical gauge and hook it up to see if you have any oil pressure.
get a pressure test done on cooling system.
i would suggest not driving truck until this is solved.
how long? depends.
get a mechanical gauge and hook it up to see if you have any oil pressure.
get a pressure test done on cooling system.
i would suggest not driving truck until this is solved.
Thread Starter
|
New User
Joined: Oct 2009
Posts: 17
Likes: 0
Trending Topics
Freshman User
Joined: Sep 2009
Posts: 27
Likes: 0
From: Ohio
How often did you change the oil on your truck? Regular intervals as reqiured by Ford?
Typically the pump screen gets clogged becuase of paraphine build up on the rockers, valve covers. Paraphine/sludge will build up over time as the oil degrades and should have been changed at a regular interval.
It is possible to get you going temporarily by reversing the pump and blowing out the screen with and electric drill. Remove the distributor, mark it first. Pull the shaft out and using a long extenstion, with an appropriately sized socket reverse the drill to blow out the screen. Reinstall and change the oil. I would add a quart of Rislone to the oil mix.
Typically the pump screen gets clogged becuase of paraphine build up on the rockers, valve covers. Paraphine/sludge will build up over time as the oil degrades and should have been changed at a regular interval.
It is possible to get you going temporarily by reversing the pump and blowing out the screen with and electric drill. Remove the distributor, mark it first. Pull the shaft out and using a long extenstion, with an appropriately sized socket reverse the drill to blow out the screen. Reinstall and change the oil. I would add a quart of Rislone to the oil mix.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Thread Starter
|
New User
Joined: Oct 2009
Posts: 17
Likes: 0
I bought the truck 3 years ago w/77 k and the oil was clean, no service records. Oil pressure guage was always at 30% I didn't think anything of it. Truck never overheated, ran well, sucked gas, changed oil every year has 84k now. This low oil pressure happened all of a sudden while climbing a grade, noticed that the oil guage was at less than 10% gave the engine gas and the guage would go up and then come right back down as the engine smoothed out. Truck overheats now so I suspect that the bearings got hot and cracked the head, scrapped the Truck to a friend thanks for the feedback!
Thread Starter
|
New User
Joined: Oct 2009
Posts: 17
Likes: 0
Yes I was bummed out also, but a 87 460 just wasn't worth my time to repair, so I picked up a 02 Expy with the 5.4 triton 105K for 6k I am very happy with it .
I think you were right on with the oil screen, I disconnected the oil cooler and started the motor an it pumped oil like crazy, filled a 5 gallon bucket 1/2 way in 30 seconds, when I put my thumbs over the hose ends I could stop the oil, I know this is a crude measurement but I didn't have a guage to check oil pressure.... so yea I think the screen was plugged too bad I didn't know it was a nice driving truck but my friend will get good use of its doner parts, thanks for all the responses and condolences, kinda like losing an old friend we do get attached to our trucks.
I think you were right on with the oil screen, I disconnected the oil cooler and started the motor an it pumped oil like crazy, filled a 5 gallon bucket 1/2 way in 30 seconds, when I put my thumbs over the hose ends I could stop the oil, I know this is a crude measurement but I didn't have a guage to check oil pressure.... so yea I think the screen was plugged too bad I didn't know it was a nice driving truck but my friend will get good use of its doner parts, thanks for all the responses and condolences, kinda like losing an old friend we do get attached to our trucks.
Freshman User
Joined: Sep 2009
Posts: 27
Likes: 0
From: Ohio
Yeah we love our trucks. I just got mine running again last night! Without it I am lost. Well at least tell your friend about the possible soln and maybe he will at least let you win on poker night!
God Bless in future truck endeavors.. Jesus drives a pickup truck..
God Bless in future truck endeavors.. Jesus drives a pickup truck..
New User
Joined: Jun 2007
Posts: 15
Likes: 0
my own Oil pressure news
Today as I was heading to my bank to make a deposit, I got a glimpse of my Idiot guage for oil pressure as it swiftly slammed from the middle range between low and high and crashed at the low.
After about 10 minutes in the bank and another 5 minutes to check and add oil the pressure went back to normal when I started the truck up.
I proceeded back toward home but the OP dropped after about 7-8 minutes up the road. I pulled over and waited another 10 minutes then restarted and had OP again. So, I once again headed toward home.
About 5 minutes later the OP dropped and this time, I noticed my valves seemingto get slightly more noisey. So, finally I pulled into the parking lot of the local library and here I am posting about Oil Pressure loss.
I am hoping to be able to limp the truck home another 15 miles if the pressure will keep coming back long enough for me to do so without major damage. Heck, my poor 88 F250 only has 296,190 miles on it.
Looks like I will be having to pull the Oil Pan and doing some research as to why the OP now is dropping. Maybe my screen is clogged and can be cleaned or some equally easy fix.
Sorry this was so long winded.
After about 10 minutes in the bank and another 5 minutes to check and add oil the pressure went back to normal when I started the truck up.
I proceeded back toward home but the OP dropped after about 7-8 minutes up the road. I pulled over and waited another 10 minutes then restarted and had OP again. So, I once again headed toward home.
About 5 minutes later the OP dropped and this time, I noticed my valves seemingto get slightly more noisey. So, finally I pulled into the parking lot of the local library and here I am posting about Oil Pressure loss.
I am hoping to be able to limp the truck home another 15 miles if the pressure will keep coming back long enough for me to do so without major damage. Heck, my poor 88 F250 only has 296,190 miles on it.
Looks like I will be having to pull the Oil Pan and doing some research as to why the OP now is dropping. Maybe my screen is clogged and can be cleaned or some equally easy fix.
Sorry this was so long winded.