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Gummed diesel engines

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Matt Theron26/02/2010 21:04:30
81 forum posts
I have been gived some diesel engines that are gummed up and was hoping that there are some ideas about  ways of ungumming them without disassembling them.
Martin Harris26/02/2010 22:01:38
9338 forum posts
252 photos
Soak them in paraffin (or diesel fuel if they don't free up).
Matt Theron27/02/2010 09:14:23
81 forum posts
I will try that.
Thanks for that advice Martin!
Myron Beaumont27/02/2010 09:48:24
5797 forum posts
51 photos
Sick it in the chip pan when 'er indoors isn't looking . That'll free it !
Myron Beaumont27/02/2010 09:49:48
5797 forum posts
51 photos
PS -Meant to say stick-Sorry !
ken anderson.27/02/2010 15:22:55
8685 forum posts
808 photos
hello matt-mostly as above-you can use petrol as well--put them in a tin of whatever you choose and leave them overnight(in the outside shed)......or else it may be for the fire brigade lad's........
        ken anderson.......
Engine Doctor27/02/2010 18:01:06
2511 forum posts
39 photos
Hello Mat . No need to soak them and risk getting forieign matter in then . Warm them thoroughly with a hot air blower /paint stripper , or put them on a tray in the oven when your wife /girlfriend isn't around being careful with or removing any plastic parts .  When realy warm they should turn quite easily but dont force them. Once they turn then introduce some diesel fuel or light thin oil and turn over until free and loose .  It should be ok to run them now  .Really stubborn gummed engines may need more heat  . To clean the exterior after freeing off and when cooled down , rinse with some cellulose thinner /gun wash grade / used with a stiff brush or old tooth brush  this works well . Oil wth some good quality oil and store in a sealed container / plastic bag . Hope it helps
Former Member27/02/2010 20:46:58
3577 forum posts

[This posting has been removed]

Myron Beaumont27/02/2010 21:07:20
5797 forum posts
51 photos
Except in France  & probably most places on the continent.
BOB ALLAN07/03/2010 01:28:59
4 forum posts
David Davis07/03/2010 07:49:28
3757 forum posts
718 photos
Except in France  & probably most places on the continent.
As far as I'm aware they don't like noisy engines in Germany or Holland. Electric flight in Europe has its roots in these two countries,

Edited By David Davis Telemaster Sales UK on 07/03/2010 07:50:32

Bob Cotsford07/03/2010 10:17:37
8583 forum posts
477 photos
I used WD40 to free of several old engines, all ran ok afterwards.  Sray it down the carb, through the ports and take the backplate of and spray some inside, then let it soak a while.
thomas oliver 110/03/2010 23:06:36
96 forum posts
23 photos
Contributors on other forums recommend Fairy Power Spray. I also find this very good.  One Model Shop used to sell cans of engine cleaner which was some caustic liquid and it did work well but no longer available.  I have also read that soaking in windscreen wash is effective, but haven't tried it as yet.  Barbeque and oven cleaners work but tend to dull down the alloy surface.   Do not leave cleaner on too long.  I go along with Engine Doctor and start with heat, to get things moving, then oil, fuel etc.   One point to watch is with r/c throttles. These also get badly seized up and you should not force them especially with plastic arms- these can break.. 

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