Notices
1978 - 1996 Big Bronco  
Sponsored by:
Sponsored by:

oil pressure and knocking

Thread Tools
 
Search this Thread
 
Old Jul 1, 2004 | 09:23 AM
  #1  
wozxxx86's Avatar
wozxxx86
Thread Starter
|
Senior User
Joined: Jun 2004
Posts: 439
Likes: 0
oil pressure and knocking

well when i go up hill i get sum knocking and such. but if ive just say... driven across town and go up some hills it doesnt do it, but if ive been driving it fora while it does. and also when i come down from long periods of high speed ( 55 and above) my oil pressure almost bottoms out. i can bring it back up by putting my foot on the gas. but after high speeds and i start driving slower like 45 ish and i put my foot on the gas the pressure drops till i get up to around 50
 
Reply
Old Jul 1, 2004 | 09:59 AM
  #2  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
sounds like bearings or rings. possibly a clogged oilpump as well. hook up a mechanical gauge so you know exactly what your pressure is. how many miles on your motor?? might be time for rebuild
late
 
Reply
Old Jul 1, 2004 | 10:02 AM
  #3  
wozxxx86's Avatar
wozxxx86
Thread Starter
|
Senior User
Joined: Jun 2004
Posts: 439
Likes: 0
210k...im just gonna say it's prolly time for a rebuild. but the thing runs realy good for as many miles. starts fast in the cold, only turns over 3 times befor it starts.
 
Reply
Old Jul 1, 2004 | 10:03 AM
  #4  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
210 is few miles for that motor. time for a 351w swap. this is what i did last summer and it was the best mod i could have ever done. the power is way better and believe or not i get better gas mileage now.
 
Reply
Old Jul 1, 2004 | 10:04 AM
  #5  
wozxxx86's Avatar
wozxxx86
Thread Starter
|
Senior User
Joined: Jun 2004
Posts: 439
Likes: 0
210k id say its prolly time for a rebuild. but i dont have the money for that..and it runs to good fora rebuild. in the cold it only turns over 3-4 times befor it starts
 
Reply
Old Jul 1, 2004 | 10:05 AM
  #6  
wozxxx86's Avatar
wozxxx86
Thread Starter
|
Senior User
Joined: Jun 2004
Posts: 439
Likes: 0
what kinda mpg? just curios cause i get 16 highway and 12 ish in the city right now
 
Reply
Old Jul 1, 2004 | 10:11 AM
  #7  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
i get 16hwy and 12 city. i will say its just a matter of time before you are left on the side of the road because your motor is losing oil pressure and that is like cutting your wrists ya know. with out blood you dont live long. plus the 302 is way underpowered.

my motor swap cost me about 1G. i found a used motor at the wrecking yard with low miles complete from the oil pan to upper intake, and then used all the wiring from my 302 on the 351w. its bolts right in. no fabbing is necessary. it took one weekend to pull old motor and one weekend to drop the 351w in. but i understand that money is tight and all. my 302 had same problems yours does now but mine had 160k on it. i just couldnt wait for it to leave me stranded.

good luck
late
 
Reply
Old Jul 2, 2004 | 08:02 AM
  #8  
wozxxx86's Avatar
wozxxx86
Thread Starter
|
Senior User
Joined: Jun 2004
Posts: 439
Likes: 0
so i can use i can use all that same equip for the 351w? realy i thought it there was alot more to it then that, well i think that i just might do that then.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

5 BEST / 5 WORST Ford Daily Drivers of the 21st Century

 Joe Kucinski
story-1

10 Fords to Drive Before You Die

 Joe Kucinski
story-2

3 Best / Worst Features Of The 2025+ Ford Expedition

 Brett Foote
story-3

10 Ways Ford is LOSING to the Competition

 Joe Kucinski
story-4

Top 6 Best Deals Available on New Fords & Lincolns Right Now

 Brett Foote
story-5

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-6

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-7

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-8

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-9

Every 2026 Ford Engine Explained

 Brett Foote
Old Jul 2, 2004 | 10:30 AM
  #9  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
find a 351w from a wrecking yard that is complete. just as if it was sitting in a vehicle. look for one from 88-93. it can come out of a bronco/f150/f250 . What tranny do you have . you should go into your control panel and fill in your signature with info on your bronco like year,engine,tranny and any other mods you may have . this will help down the road. and if you have any questions regarding this swap let me know.
 
Reply
Old Jul 2, 2004 | 10:32 AM
  #10  
Kemicalburns's Avatar
Kemicalburns
Hotshot
20 Year Member
Liked
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
Also the things you can reuse from your current 302 on a 351 are. the Powersteering/ac assembly and also the alternator/smog pump as well if the motor you get doesnt have those things.

late
 
Reply
Old Jul 3, 2004 | 11:44 PM
  #11  
ecsmith0624's Avatar
ecsmith0624
Senior User
Joined: Jan 2003
Posts: 169
Likes: 0
From: Florida
Originally Posted by wozxxx86
210k id say its prolly time for a rebuild. but i dont have the money for that..and it runs to good fora rebuild. in the cold it only turns over 3-4 times befor it starts
Like Kemicalburns said, install a mechanical oil pressure gauge. They're cheap and easy to install so no reason not to have one. My '89 had almost no oil pressure and still ran like a champ. You can either run it till it dies and possibly have less parts that will be still be good enough to use on a "new" engine, or go ahead and install a new (rebuilt) engine and re-use alot of the stuff off the motor you've got now. If the oil pressure is really that low than a rebuild is in your future, maybe 2 weeks, maybe 2 years. low oil pressure is basically a ticking time bomb. It's gonna blow, just a matter of when.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
alloro
1997 - 2006 Expedition & Navigator
6
Mar 10, 2017 02:51 AM
jonathan9573
1987 - 1996 F150 & Larger F-Series Trucks
6
Aug 5, 2014 01:16 PM
MyFirstFordV10
Modular V10 (6.8l)
15
Jun 7, 2011 08:22 AM
mean green 91
1987 - 1996 F150 & Larger F-Series Trucks
21
Jul 20, 2010 08:15 PM
new2bronco
1978 - 1996 Big Bronco
16
Nov 4, 2006 09:47 PM




All times are GMT -5. The time now is 02:35 PM.

story-0
5 BEST / 5 WORST Ford Daily Drivers of the 21st Century

Slideshow: The 5 best and 5 worst Ford daily drivers of the 21st century.

By Joe Kucinski | 2026-06-23 08:55:01


VIEW MORE
story-1
10 Fords to Drive Before You Die

Slideshow: 10 Fords to drive before you die.

By Joe Kucinski | 2026-06-22 14:29:44


VIEW MORE
story-2
3 Best / Worst Features Of The 2025+ Ford Expedition

The latest Expedition is quite popular, but it certainly isn't perfect.

By Brett Foote | 2026-06-22 14:23:19


VIEW MORE
story-3
10 Ways Ford is LOSING to the Competition

Slideshow: 10 ways Ford is losing to the competition

By Joe Kucinski | 2026-06-15 09:52:01


VIEW MORE
story-4
Top 6 Best Deals Available on New Fords & Lincolns Right Now

Some great targets in today's expensive world.

By Brett Foote | 2026-06-15 09:35:19


VIEW MORE
story-5
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-6
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-7
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-8
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-9
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE