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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 02-25-2007, 05:32 PM   #1 (permalink)
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how do you wash a diesel engine

any pointers about washing a 7.3 engine compartement
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Old 02-25-2007, 05:37 PM   #2 (permalink)
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Re: how do you wash a diesel engine

Start with a cold engine. Cover power steering filler neck with plastic bag. Cover alternator with bag. Spray with Simple Green, let sit for a few minutes and wash with LOW pressure water. If possible, let it sit in the sun to dry off. Remove bags and you're done.
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Old 02-25-2007, 06:36 PM   #3 (permalink)
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Re: how do you wash a diesel engine

I washed mine a few weeks ago and when I went to start it, it wouldnt turn over. The starter would engage, but it sounded hydrolocked. Make sure you let the engine air dry for a while.

It turned out that I got some of the electronics wet and the converter was locking up as soon as I turned the key on.
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Old 02-25-2007, 07:54 PM   #4 (permalink)
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Re: how do you wash a diesel engine

[ QUOTE ]
Start with a cold engine. Cover power steering filler neck with plastic bag. Cover alternator with bag. Spray with Simple Green, let sit for a few minutes and wash with LOW pressure water. If possible, let it sit in the sun to dry off. Remove bags and you're done.
jgr

[/ QUOTE ]


This is the exact way I do mine and never had a problem. Get some large rubber bands to hold the grocery sacks on over the PS and alternator. I try and position the truck so the sun is shinning directly on the engine, so after the wash, it has a good chace to dry off before I start it up. It has never failed to start after the engine wash. Simple Green rocks.
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Old 02-26-2007, 02:02 PM   #5 (permalink)
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Re: how do you wash a diesel engine

I do mine 2-3 times a year but I let it sit all day before starting it. Then I use the engine detailer from AZ and she looks awesome with no foul odors.
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Old 02-26-2007, 03:58 PM   #6 (permalink)
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Re: how do you wash a diesel engine

[ QUOTE ]
Start with a cold engine. Cover power steering filler neck with plastic bag. Cover alternator with bag. Spray with Simple Green, let sit for a few minutes and wash with LOW pressure water. If possible, let it sit in the sun to dry off. Remove bags and you're done.
jgr

[/ QUOTE ]

I do it the same way. I wash the engine compartment first and let it dry while I wash the truck. I do mine about every other truck wash. [img]/ubbthreads/images/graemlins/eek.gif[/img] I know, my wife thinks I'm crazy too !! [img]/ubbthreads/images/graemlins/rolleyes.gif[/img] LOL
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Old 02-26-2007, 05:49 PM   #7 (permalink)
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Re: how do you wash a diesel engine

Everyone seems to love Simple Green until they start to have hard to detect electrical connection corrosion problems. There are many warnings about using Simple Green in the Aviation Industry. This became such a problem that Simple Green came out with Extreme Simple Green. This has been brought up in numerous threads by myself and others.

Other than the corrosive effects to electrical connections it is also taboo to use on high strength metal alloys due to Hydrogen Embrittlement which is a room temperature phenomenon where hydrogen present inside the material makes it brittle. High-strength steels, aluminum,, and titanium alloys are most susceptible. I bring this up as many who use Simple Green on their vehicles might be using it for other uses other than cleaning the shop floor. You also don't want to use cleaning agents that have a high alkali content such as Formula 409 or Fantastic!

I have been asked what I use to clean engines. I have many exotic and expensive cleaning agents subject to what is being cleaned but I usually use a Stoddard Solvent which is now known to be very toxic to the user but does not harm my engines.

Good luck,
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Old 02-26-2007, 06:19 PM   #8 (permalink)
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Re: how do you wash a diesel engine

I drive to the car wash -- does not get hot , just warm & hose her down .. Have used Simpel Green some on the bad spots . Get in and driver her out. Guess I'm just luckey -- fires up any on the road again.
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Old 02-26-2007, 09:16 PM   #9 (permalink)
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Re: how do you wash a diesel engine

I've used the engine cleaner at the car wash, I guess I've been lucky also. I don;t stay in one spot very long when I'm washing though.
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Old 02-26-2007, 09:47 PM   #10 (permalink)
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Re: how do you wash a diesel engine

The problem is worse when you first spray a cleaner like Simple Green onto a dry connector. Capillary action sucks the cleaner into the connector and no amount of rinsing will get it out as it's already full of cleaner. If you absolutely HAVE TO use Simple Green spray clean water first as the connector will fill with the clean water and very little Simple Green will get into it. I personally would rather see you use an atomizing sprayer connected to your air compressor and spray atomized kerosene or clean diesel fuel without additives to remove an oily dirt buildup than to use a household cleaner.

Back in the 50's and early 60's we used to use 115/145 Octane Aviation Fuel (Purple) to clean the 28 cylinder radial engines (P&W R4360) after repairing an oil leak if we had no solvent readily available. Just use common sense and have no source of ignition close by!
Jim
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