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dr p 
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Joined: 24 Feb 2019
Location: new york
Points: 1324
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 Topic: Whats the best eay to clean carbon off piston head
Posted: 16 hours 11 minutes ago at 8:11pm |
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Pulled the head off too rarely used wd 45 due to sticky intake valve and found a significant amount of carbon on the piston heads. What is the best way to remove it? Chem-dip, oven cleaner, dawn dish detergent? Hearing lots of conflicting thoughts. I assume i am getting carbon build up from not using it enough and not hard enough when i do. Other causes?. Thanks in advance
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Codger
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Joined: 23 Dec 2020
Location: Utopia
Points: 2299
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Posted: 15 hours 43 minutes ago at 8:39pm |
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Acetone mixed with either xylene, or naptha to keep the acetone from evaporating too quickly works well with a brass bristle brush. Plastic brushes are not good in the acetone and melt. Wear safety glasses as can burn the eyes easily from "fling off" from the scrubbing. I like a spray bottle, or dip the piston crown so it it good and wet and strong agitation.
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WF owner
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Joined: 12 May 2013
Location: Bombay NY
Points: 4898
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Posted: 6 hours 33 minutes ago at 5:49am |
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I have a carbon problem with my "parade queen" WD. It rarely gets driven much more than a fast idle. Is there any way to prevent carbon build up, other than running it hard?
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Codger
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Posted: 5 hours 35 minutes ago at 6:47am |
 WF owner wrote:
I have a carbon problem with my "parade queen" WD. It rarely gets driven much more than a fast idle. Is there any way to prevent carbon build up, other than running it hard? |
You could run a step hotter spark plug than original. That will help some. Really no substitute for getting an engine up to operating temp through work, (IMO). Back in the 70's we used to slowly feed ATF through the carburetor with an engine running at high idle outdoors and this would help in all but extreme cases; especially with stuck piston rings. I've never done this on an "updraft" carburetor so not versed in a tractor application.
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Ed (Ont)
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Joined: 08 Nov 2009
Location: New Lowell, Ont
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Posted: 4 hours 30 minutes ago at 7:52am |
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A good way is to do it before you take the head off. Get it operating temp and let it run at 3/4 throttle. Mist in water from a spray bottle as engine is running.
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AC7060IL
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Joined: 19 Aug 2012
Location: central IL
Points: 3491
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Posted: 3 hours 1 minutes ago at 9:21am |
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If tractor is a parade queen, maybe try occasionally running it with a high ethanol fuel mix(E85?). Use 5 gallons? Not entire tank full.
To help the carb gaskets survive the harsh E85, shut fuel off at the tank & let engine consume all fuel from carb/intake. Don’t allow E85 to set inside carb/tank.
Could be proactive & clean out fuel tank & lines. And Have an extra carb kit at the ready? May be a Better alternative to pulling head/piston/valve cleaning???
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ekjdm14
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Joined: 20 Aug 2024
Location: Manchester UK
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Posted: 1 hour 35 minutes ago at 10:47am |
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Water mist at high idle would be my go-to on a running engine, otherwise I'd much rather remove the pistons than clean in situ to avoid any chunks getting stuck down the side of the piston and scoring up a sleeve.
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Stuck Farmer
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