Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
Ford Tractors Discussion Forum
Order Ford 861 Parts Online

High Engine Oil Pressure On A 861

Welcome Guest, Log in or Register
Author  [Modern View]

11-25-2017 19:08:17

Report to Moderator

A customer called me tonight with a question I can't find an answer for. He started a Ford 861 that sat for awhile. When he started the engine, the oil pressure went up to 80#'s and filled the oil gauge up with oil. What could cause such a high oil pressure? Is there a relieve valve in the oil pump?

[Log in to Reply]   [No Email]

11-27-2017 08:20:51

Report to Moderator
 Re: High Engine Oil Pressure On A 861 in reply to KCTractors, 11-25-2017 19:08:17  
ditto what the others said. Get a new gauge FIRST.

If the person is using some heaviy oil.. like 20w50 or 40w and it's coold, and the engine is reasonably tight, then when cold at high idle you can for sure get near 80 for a bit.

It should be closer to 55 on a tight engine once she warms up.

Till that gauge is changed.. you can't rely on it.

Finally.. YES.. it could be a stuck relief.. but I'd address the other issues first.

If it was suspected it was a stuck relief, I'd drain the oil in it if it was any of the heavy stuff mentioned, then I'd go buy 4 quarts of store brand cheap 10-30 synthetic engine oil, and a pint or two of seafoam.. and dump her in and let her run at low idle ... might just disolve or soften some parafinnic solids and let her start working again.

if that worked. Drain the oil.. change filter, and if it was me.. I'd go back in with the store brand 10w30 synthetic. store brand synthetics are only a little more per quart than name brand dino oils.

The last 3 tractors I've done any valve / head work on, have gotten synthetic cheap store brand oil and have had 0 problems for the last few years.

[Log in to Reply]  [No Email]

11-26-2017 03:27:57

Report to Moderator
 Re: High Engine Oil Pressure On A 861 in reply to KCTractors, 11-25-2017 19:08:17  
A new mechanical oil pressure gauge can be bought for $15 which suggest that they are a pretty cheap item and may not last forever. The first thing I would do is replace the one that is leaking before I looked for any other problem.

[Log in to Reply]  [No Email]
William Fissell

11-25-2017 20:43:10

Report to Moderator
 Re: High Engine Oil Pressure On A 861 in reply to KCTractors, 11-25-2017 19:08:17  
'filled the oil gage with oil' suggests the Bourdon tube inside is leaking and the measurement is not accurate.

[Log in to Reply]  [No Email]

11-25-2017 20:31:20

Report to Moderator
 Re: High Engine Oil Pressure On A 861 in reply to KCTractors, 11-25-2017 19:08:17  
80 pounds (or more) is quite normal when the oil is cold and the engine is revved. I'd be more concerned with what you have with the engine hot. 40-60 would be about right with the engine at normal operating speeds.

[Log in to Reply]  [No Email]

11-26-2017 05:48:50

Report to Moderator
 Re: High Engine Oil Pressure On A 861 in reply to Bern, 11-25-2017 20:31:20  
I agree. My '63 2000D with around 3750 original hours (proofmeter OEM and still working), no wrench on the engine proper, had for over 30 years, runs there too, always has. Starts right up in the winter usually with no starting aid indicating the rings are still in good shape to get the required compression and no bearing knocks.....must be the way it's designed.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums

Today's Featured Article - Trenching With a Plow - by Staff. Introduction: This interesting information came from one of the discussion forums here at YT. We thought we should place it up front so it could be read by anyone interested in putting old iron to work. [Editor] I tried something new today, and it worked so well I thought I should post it - in case it might help someone else. I'm running 100 yards of 4" drain pipe from the gutter downspouts of our house to a pond down the hill. This should hel ... [Read Article]

Latest Ad: 990 7 foot mower conditioner john deere hay rake pto driven john deere head carrier [More Ads]

Copyright © 1997-2021 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy