WD45 Bogs Down When Hot
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=20141
Printed Date: 08 Feb 2025 at 11:25pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD45 Bogs Down When Hot
Posted By: jyanna
Subject: WD45 Bogs Down When Hot
Date Posted: 31 Oct 2010 at 11:57am
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My WD45 starts and runs fine until it warms up. Then it bogs down and has no power. Just redid the carb and new plugs. There is coolant in the radiator. Guage shows temp OK. Water pump? Any ideas would be appreciated.
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Replies:
Posted By: Gatz in NE
Date Posted: 31 Oct 2010 at 1:55pm
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Coil ok ?
Check points gap too.
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Posted By: dannyraddatz
Date Posted: 31 Oct 2010 at 2:19pm
I may be out there on this one but I had an old jeep that lost power. The valves had got out of adjustment and would loose power when it warmed up.
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Danny Raddatz
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Posted By: kb
Date Posted: 31 Oct 2010 at 5:55pm
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Our WD45 was doing that same exact thing this spring. The coil was breaking down and it was fairly easy to figure out as you couldn't touch it hot.
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Posted By: DrAllis
Date Posted: 31 Oct 2010 at 7:00pm
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If tappets have been adjusted too tight, they will do that. Adjust to .015" COLD intake and exhaust........don't go thru that .010" when hot B.S. ...do them all cold at .015" and KNOW they aren't too tight.
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Posted By: DonBC
Date Posted: 31 Oct 2010 at 7:05pm
I would check the coil first and see if it is hot after the engine begins to bog down.
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Jack of all trades, master of none
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Posted By: jyanna
Date Posted: 03 Nov 2010 at 5:07am
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Thanks so much for all your suggestions!
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Posted By: dannyraddatz
Date Posted: 03 Nov 2010 at 5:19am
Did you find the problem?
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Danny Raddatz
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Posted By: TedBuiskerN.IL.
Date Posted: 03 Nov 2010 at 7:44am
I had that problem with an RC. Turned out to be a large build up of rust, scale, sludge, etc. around the rear of the back sleeve, so it wasn't cooling and would seize the piston. It was the original cast iron piston, so the clearances were pretty tight.
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Most problems can be solved with the proper application of high explosives.
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Posted By: Bill Long
Date Posted: 03 Nov 2010 at 8:17am
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You can try the condenser first. That is the cheapest fix but normally it is the coil.
Let us know how it goes.
Good Luck!
Bill Long
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