Farm Equipment - 7040 oil leak @ injector

Print Page | Close Window

7040 oil leak @ injector

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=42905
Printed Date: 19 Aug 2025 at 1:58pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 7040 oil leak @ injector

Posted By: johnkc
Subject: 7040 oil leak @ injector
Date Posted: 29 Dec 2011 at 9:06am

on injector #6 I am getting a bit of engine oil leaking from around the injector. Question is, am i looking at removing the injector and replacing oring / seal and is there other issues to be aware of? Thanks, John.

Replies:

Posted By: SteveM C/IL
Date Posted: 29 Dec 2011 at 10:42am

this has came up here before....i don't think the answer given was ever proven wrong....it is actually your valve cover gasket.....certainly easier to check out first.

Posted By: injpumpEd
Date Posted: 29 Dec 2011 at 5:41pm

yes, the valve cover is leaking oil and it's going down injector hole, then oozes out once it warms up. there is no oil around the injector. Now if fuel was leaking, then it could be the injector itself or the line.

-------------
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!

Posted By: johnkc
Date Posted: 30 Dec 2011 at 9:20am

Thanks guy's, I will take a closer look at the valve cover. John.

Posted By: bakwoodsfarm
Date Posted: 30 Dec 2011 at 10:11am

besure to clean out between the valve cover and the intake manifold, a lot of built up dirt that will fall into the engine.