7040 fuel question revisited
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=201084
Printed Date: 23 Sep 2024 at 9:26am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7040 fuel question revisited
Posted By: INAllis
Subject: 7040 fuel question revisited
Date Posted: 28 Apr 2024 at 2:21pm
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Posted several days ago about fuel issue on 7040. Replaced hand primer pump, about 4 or 6 pumps it had fuel and was back in top form. Used it off and on about 3 days moving equipment etc NO issues at all. This morning ran bush hog a few hours, again no issues until I idled it down to get out and move a branch. It abruptly died and back to the exact same thing???? I can use primer pump and see fuel and air bubbles come up through glass filter but tries to start and get out fuel filter about 1/2 empty. Idk?
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Replies:
Posted By: 8070nc
Date Posted: 28 Apr 2024 at 4:02pm
Its getting air somewhere. I seem to remember the good Doctor saying the 7040s pulled fuel from the top of the tank thru a drop pipe. If that is the case and it runs fine with a full tank of fuel part of that drop pipe may have broken off. May be wrong but i think they were plastic. We had a 7040 35 years ago but never had a problem like that
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: DrAllis
Date Posted: 28 Apr 2024 at 4:06pm
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Fuel tank outlet blockage ???? The fuel tank vent is the fuel fill cap itself...may be plugged.
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Posted By: INAllis
Date Posted: 28 Apr 2024 at 4:46pm
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I have ordered a new fuel cap, be here tomorrow. After watching you C a see small air bubbles in bottom of fuel filter, gonna replace that tomorrow as well
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Posted By: INAllis
Date Posted: 30 Apr 2024 at 11:46am
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Well put new fuel cap and replaced fuel filter with a Napa gold. Primed right up and fired off and ran like a top. Hopefully this is the cure. Thanks everyone
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