How to clean gunk from coolant pipes/tank/rad? (R25/HGF) - MG-Rover.org Forums
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post #1 of 24 (permalink) Old 14-05-2008, 12:12 Thread Starter
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Question How to clean gunk from coolant pipes/tank/rad? (R25/HGF)

This is related to my R25 HGF progress thread.

Now that I have my header tank and coolant pipes off, how do I get all the oily gunk out of them? It's hard to get the oil out. Also, what about the radiator? I suspect that's full of rubbish too!

Thanks,


Phil
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post #2 of 24 (permalink) Old 14-05-2008, 12:18
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flush with water as best as possible (open hose set low in the expansion tank)

otherwise run with some forte cleaner in.
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post #3 of 24 (permalink) Old 15-05-2008, 09:28 Thread Starter
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What's forte cleaner? I don't wanna use something that might weaken the materials or anything.

Thanks for replying.
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post #4 of 24 (permalink) Old 15-05-2008, 09:38
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THIS STUFF

Automatic Washing powder (biological) will work just as well. couple of scoops and run it for a few hours and drop it out and flush with water and it will be fine.
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post #5 of 24 (permalink) Old 15-05-2008, 10:10
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run it how? on the car or in the washing machine? lol
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post #6 of 24 (permalink) Old 15-05-2008, 10:31
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Yes, you have to put all the engine parts in the washing machine.
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post #7 of 24 (permalink) Old 15-05-2008, 10:33
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As empsburna said, you can only get it all out by running the engine past the point when the stat opens with some degreaser in the system. It is very difficult stuff to remove!
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post #8 of 24 (permalink) Old 15-05-2008, 10:41
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Yes, you have to put all the engine parts in the washing machine.

thought so. have just put mine in with some fabric softner to make them nicer for my engine.
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post #9 of 24 (permalink) Old 15-05-2008, 10:46
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expansion tank can be cleaned up a treat in the dishwasher appatently!
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post #10 of 24 (permalink) Old 15-05-2008, 10:47
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As empsburna said, you can only get it all out by running the engine past the point when the stat opens with some degreaser in the system. It is very difficult stuff to remove!
and it might take more than one flush - when mine went some years back it took three or four attempts to get it all out!
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post #11 of 24 (permalink) Old 15-05-2008, 14:03 Thread Starter
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Erg, bad place for sarcasm with a car newbie such as myself! I'll take the washing machine/dishwasher comments as sarcasm.

So, I need degreaser (forte recommended).

Should I either:
  • Clean the pieces while detached from the car. What's the best method?
  • After engine is rebuilt, run the engine with something in the coolant water. Should I use degreaser or washing powder, and also, what should I do in terms of how long it runs, changing coolant etc?

Thanks,


Phil
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post #12 of 24 (permalink) Old 15-05-2008, 14:15
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dishwasher!
I unscrewed my hezder tank and left it to soak in a sink filled with fairy
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post #13 of 24 (permalink) Old 15-05-2008, 15:01
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Originally Posted by replete View Post
Erg, bad place for sarcasm with a car newbie such as myself! I'll take the washing machine/dishwasher comments as sarcasm.

So, I need degreaser (forte recommended).

Should I either:
  • Clean the pieces while detached from the car. What's the best method?
  • After engine is rebuilt, run the engine with something in the coolant water. Should I use degreaser or washing powder, and also, what should I do in terms of how long it runs, changing coolant etc?
Thanks,


Phil
Phil.

Unless you can't see through the expansion tank for grime/cloudy boiled oil mixutre) then you can leave eveything connected and let the engine run with the forte/water mixture - no need to remove anything (apart from bottom hose on the radiator to drain and flush with water)

You may need to flush it a few times - so keep an eye on it for a few weeks.
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post #14 of 24 (permalink) Old 15-05-2008, 16:16
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out of curiosity, where do you put the washing powder? In the expansion tank?

cheers
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post #15 of 24 (permalink) Old 15-05-2008, 16:31
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i work at a garage and we use daz, just mix it with water and put in system, run the engine, then drain. if you want to make sure none left in system flush with just clean water. it works a treat
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post #16 of 24 (permalink) Old 15-05-2008, 17:16
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couple of scoops in the expansion tank should do it.
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post #17 of 24 (permalink) Old 15-05-2008, 20:19
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i dont know how good this is for your engine but i have been told that concentrated mortar cleaner, aka brick acid works well,but you need to take the bottom hose off and let the water go first, but you must only put about 250ml in, and mix it with water first, or the mix will be too strong.
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post #18 of 24 (permalink) Old 15-05-2008, 20:33
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That sounds potentially lethal to metal parts! I'd stick with a degreaser/detergent.
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post #19 of 24 (permalink) Old 16-05-2008, 10:38 Thread Starter
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Quote:
Originally Posted by empsburna View Post
Phil.

Unless you can't see through the expansion tank for grime/cloudy boiled oil mixutre) then you can leave eveything connected and let the engine run with the forte/water mixture - no need to remove anything (apart from bottom hose on the radiator to drain and flush with water)

You may need to flush it a few times - so keep an eye on it for a few weeks.
empsburna,

The tank was absolutely packed with gunk, it's everywhere. Couldn't see through it. There's also a thin layer of reddish substance dried onto the bottom of it as well.

I've put a bit of fairy in there, and i'll soak it again in a tub.

I'll do the washing powder thing when the engine's running.

Thanks, guys.
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post #20 of 24 (permalink) Old 16-05-2008, 11:02
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whip it out and pour some boiling water and washing powder & bleach in - you might want to chuck a handful of garden pebbles/pea gravel in and give it a good shake while you are at it.
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