(800) 853-2651
SHOP NOW

new rebuild no oil pressure.

T

trevor patnoad

Member
It works the 8-n started. But I have no oil pressure!!!!!! Everything was hot tanked at a machine shop and all lines had been blown out. oil pump had minimal backlash. all passages were blown out prior to building I just don't get it. any thought would be very helpfull thanks, Trevor
 
There may be several oil gallery access plugs (internal) that were removed and not replaced. Pull the pan and look up into it with a good light.
I would use either a pump oilcan, or a drill pump, to charge the oil gallery from a can of engine oil. A small piece of rubber or vinyl hose can be used to seal the oil can into the hole now connecting the gauge. If pumping oil into this seems very easy and never gets harder, there is a major internal leak. With the pan off, pumping oil in as above will show you exactly where it is leaking. There is no oil going above the valve chamber, so it must be seen in the crank case. Jim
 
Did you put any oil in the pump after you had it apart so it would prime and did you prime the pump?
Did you check the pump for oil flow with w can of oil by hand ? Are the cam bearings, and rod and main bearings right so the holes in the bearings are aligned with the block and rod galleys for the oil to flow?
 
Did you check at oil galley on engine? If you didn't, do, because you may have pressure. If none there then might be a plug left out some where. Did you prime the pump?
 
Make sure the oil pick up tube is not cracked or leaking and make sure the relief valve is not stuck open.
 
i pull the relief vale out of the timing caseand it was under spring tension. but the end just sits in small concaved area. but all was very clean
 
Several ways. Put a fitting on the block where you can "T" into it and pump oil there till you have pressure on gauge. Another, remove oil pump and pack with Vaseline.
While oil pump is out sit in oil and spin to make sure it is pumping but still pack with Vaseline before putting back up.
 
I wonder if a pipe plug was removed from the block that's drilled into the oil gallery during the cleaning and wasn't reinstalled. Hal
 
Did you prime the oil pump in a clean container of oil before reinstalling it on the engine? Hal
 
i will try to prime the oil pump thru the oil pressure relief port tomorrow. i've got alot of case oil in the barn 90+ weight. hopefully that does it. I will let ya know. and thanks for all the help. it's always good talkin' to you guys. trevor
 
If you have an O'Reilly parts store close by, they have a prelube tank in their loan a tool program. I bought a long block from them once and in order for the warranty to be valid, they required me to borrow the tank to prime the engine. It's real easy to do. Just fill the tank with oil, plumb it in the oil pressure gage port on the engine, pressurize the tank with air, and open a valve.
 
You must log in or register to reply here.

Similar threads

W
Ford 172 diesel squealing noise, no oil pressure, loose harmonic balancer bolt, and white smoke out of breather
3 4 5
Replies
87
Views
4K
Woodtractor1
W
G
1943 2N no oil pressure
Replies
17
Views
827
Tim PloughNman Daley RIP
T
1
Help with 2000 3 cyl coolant loss
Replies
2
Views
169
1sarge
1
B
8N no oil pressure
2
Replies
38
Views
2K
Eman85
E
D
John Deere 301A clutch
Replies
2
Views
247
Jim.ME
J
Tractor Parts Tractor Manuals

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.

Copyright © 1997-2024 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

Back
Top