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  1. #11
    Super Member Gary Fowler's Avatar
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    Jun 2008
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    7,830
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    Bismarck Arkansas
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    2009 Kubota RTV 900, 2009 Kubota B26 TLB & 2010 model LS P7010

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    There is nothing wrong with pressure washing an engine as long as you don't get too close to gasket surfaces. A good degreaser soaking first helps remove the oily/greasy residue. Spraying a light coat of diesel on the engine and letting it soak will do the same as a degreaser but not so good on the environment.
    2010 LS P-7010C 20F/20R gear tractor & FEL, 2009 Kubota B 26 TLB, RTV 900 Kubota,17 foot Lund boat with 70HP motor, 2012-20 ft 12k GVW trailer, 2011- 52" Craftsman ZTR mower, 2013 Ferris Zero Turn, 3 weed whackers, pressure washer, leaf blowers, 7 foot bush hog, 8 foot landscape rake , 8 foot 3 PH disc, 2 row cultivator, 350 amp Miller AC/DC welding machine and all the tools needed to keep them all repaired and running.

  2. #12
    Bronze Member
    Join Date
    Jul 2014
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    94
    Location
    NE Ohio
    Tractor
    John Deere F935

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    Since there is plenty of advice on the washing, I'll say something about the oil leak itself. It's not likely a head gasket leak, as there is oil above it on the valve cover. So the leak is more likely coming from the valve cover gasket. Since I bet the VC gasket is leaking, I'd suggest cleaning/inspecting your engine breather pipe as usually these leaks are caused by excessive crankcase pressure due to poor crankcase ventilation.

  3. #13
    Gold Member
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    Dec 2013
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    467
    Location
    Southern Alberta, Canada
    Tractor
    4410 and F-935 John Deere

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    Oven cleaner also works good as engine shampoo. Even just a good pressure wash will make a big difference already. I would make sure the tractor runs first and then pressure wash the engine. After pressure washing then start the engine to dry it off. It's not a good idea to pressure wash a running diesel engine as the injection pump can be damaged.

  4. #14
    Veteran Member MHarryE's Avatar
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    Feb 2009
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    1,454
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    Northeastern Minnesota
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    JD 7720; Kubota M135GX, NH TS115A; JD 6230; Kubota L5740

    Default

    One concern about washing is that some duel injection pumps are sensitive to rapid temperature variations. Spraying cold water on a hot injection pump can shrink the outside causing the pistons to seize. Somewhat strange because these pumps are designed to run in a downpour but I guess the incoming rain is warmed by the radiator and is not the volume a hose can produce. I have seen in some operator's manuals not to wash a hot engine.
    JD7720; KubotaM135GX; NH TS115A; JD6230; KubotaL5740

  5. #15
    Platinum Member
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    Mar 2013
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    Canada Ontario
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    1996 Kubota L4200 GSTC, 1994 JCB 210S 4x4x4

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    Quote Originally Posted by MHarryE View Post
    One concern about washing is that some duel injection pumps are sensitive to rapid temperature variations. Spraying cold water on a hot injection pump can shrink the outside causing the pistons to seize. Somewhat strange because these pumps are designed to run in a downpour but I guess the incoming rain is warmed by the radiator and is not the volume a hose can produce. I have seen in some operator's manuals not to wash a hot engine.
    Yep, I've ruined an injection pump by pressure washing a warm engine with cold water.
    Think of these injection pumps as "fine Swiss watches", treat them gently....lol

    IMO, if your going to clean a dirty engine like the one above,
    make sure the engine is "cold",
    spray your degreaser etc, let it sit, then use a garden hose with moderate pressure.
    Always cover the IP to protect it from "shock", use warm water to clean it, baby it...lol
    I've heard of "many" cases where the IP never ran right after hitting them with pressured cold water.

  6. #16
    Elite Member
    Join Date
    Feb 2011
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    2,634
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    Trivoli, IL
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    SSTT (Sideways Snake Tain Tractor) and STB (sideways train box) tractor, dirt harvester

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    tooth brush, and a couple hard bristle brushes. a couple size flat head screw drivers (small to big). and some paper towels. i have used scrappers, razor blades, and a wire brushes before, but they can leave some nasty scrap marks. but if paint is already chipped and bubbling away, flaking away....*shrugs*

    adding to the list... a parts cleaner can work as well. in a jamb i have used diesel itself. but ya want to keep everything contained. so your not contaminating the ground water supplies, and or the lawn.

    pressure washer is all fine, but it sends crud every were. and the stuff i mention will also send crud every were as well but hopefully keep stuff contained within a few feet of tractor. "darn if you do, darn if you don't" i might suggest using hard bristle brushes first to remove majority of the build of gunk. and then go back with a pressure washer. to clean things up. more likely less splatter, and be able to get a better clean job, without having to take hood off, and clean up all the gunk from pressure washer sending it flying up under hood and every were else.
    Ryan

  7. #17
    Platinum Member lutt's Avatar
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    Dec 2010
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    570
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    Pocahontas, Arkansas
    Tractor
    Kubota ZG 22, John Deere 4200 4wd/ 420 loader, 4 wd,08 polaris 700 ranger crew

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    I use a pressure washer on mine, I have a Hotsey with a diesel fired water heater. I use breakthrough, their brand of cleaner, if needed. Which is not usually, the hot water will cut about anything. A little off topic, but also use their wax, run it thru the injector, just like soap. Does a really good job. LUTT

  8. #18
    Platinum Member joemd11's Avatar
    Join Date
    Jan 2010
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    951
    Location
    Western Pa
    Tractor
    LS R3039, Power King 1614, Simplicity Soveriegn 75th Aniv model.

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    I cover the alternator with a plastic baggy before cleaning my engine with some dawn dishwashing liquid and a garden hose. Maybe the baggy isn't needed???

  9. #19
    Silver Member
    Join Date
    Aug 2013
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    159
    Location
    Lawrenceburg Ky, Huntsville Alabama
    Tractor
    Ford Dexta, Branson 6530c Yanmar Lx490 Power reverser

    Default Re: Cleaning Dust and Oil form the exterior of a deisel engine

    My dad bought a John Deere 2020 back in the late 70's I think, our first diesel, and after using it one day owing ragweed patch I decided to hose off all the pollen before I parked it. Left engine running and sprayed away. Engine stopped suddenly and I remember thinking this thing doesn't have spark plugs or a distributor why would water do anything to it. Tractor was under warranty and I did not tell my dad what I had done just told him the tractor just stopped. I actually had no clue the water had seized the pump but the dealer picked up the tractor, and when they brought it back they said it had a new pump. When he told us how much one of those would have cost it caused me and my dad to both sit there wide eyed. We were afraid we would not be able to afford to own that tractor. Many years later I connected the dots in the connection between the hosing of the pump and the pump failure.

    I have seen other people hosing their pump while running with out consequence but for me never going to happen. I would let it cool down before washing

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