AC 840 loader problem
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=109077
Printed Date: 19 Jul 2025 at 8:04pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: AC 840 loader problem
Posted By: JustinW.
Subject: AC 840 loader problem
Date Posted: 16 Jul 2015 at 1:23pm
Hey guys, a friend of mine has an 840 loader that we have been having problems with. It seem to have lost power (diesel engine) and she won't spool up like it used to. Its never really run right but its run better than it is now. We did power wash it to get the grease and oil off of it, and it seemed after that it started really acting up. Could water in the fuel be causing this? It blows white smoke out of it, doesn't really burn oil, but it looses oil through the dipstick. (got that fixed). But another thing I was wondering, there looks to be a breather tube on the right side of the engine (operator point of view) and when she gets warmed up, it starts blowing white smoke out the hose. It looks to be a breather that goes up to the valve cover gasket. What could the smoke be caused by? Its not very WHITE but you can tell its blowing out and pretty hard. (lets keep that pg please ) Thanks for any help!!! ~Justin
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Replies:
Posted By: DiyDave
Date Posted: 16 Jul 2015 at 5:43pm
| Just a guess, but after pressure washing gets me to thinking head gasket... |
Posted By: dustydoo
Date Posted: 16 Jul 2015 at 7:34pm
| Are there any rubber fuel lines , if so it may be sucking air making ran poor. The white smoke from the crankcase breather if it starts after the engine warms up is probably water in the block and it is actually steam just my to cents |
Posted By: JustinW.
Date Posted: 16 Jul 2015 at 8:51pm
| Ok thanks guys. I think the fuel lines are new, but I'll have to ask him. I'll also check the head gasket. Thanks |